
^{10}B (1988AJ01)(See Energy Level Diagrams for ^{10}B) GENERAL: See also (1984AJ01) and Table 10.5 [Table of Energy Levels] (in PDF or PS). Shell and deformed models: (1983VA31, 1984VA06, 1984ZW1A, 1987KI1C, 1988OR1C, 1988WO04). Cluster and αparticle models: (1983SH38, 1984NI12, 1985KW02). Special states: (1983BI1C, 1983FE07, 1983VA31, 1984NI12, 1984VA06, 1984ZW1A, 1985GO1A, 1985HA18, 1985HA1J, 1986BA1X, 1986XU02, 1987AB1H, 1987BA2J, 1987KI1C, 1988KW02). Electromagnetic transitions and giant resonances: (1983GM1A, 1984NI12, 1985GO1A, 1987BA2J, 1987KI1C). Astrophysical questions: (1982AU1A, 1982CA1A, 1984TR1C, 1985CA41, 1985WA1K, 1987AR1C, 1987AU1A, 1987RO25, 1988KR1G, 1988RE1B). Complex reactions involving ^{10}B: (1983EN04, 1983GU1A, 1983NA08, 1983OL1A, 1984GR08, 1984HI1A, 1984HO23, 1984RE14, 1984TE1A, 1985KAZQ, 1985LI1B, 1985MO08, 1985WI18, 1986AV1A, 1986CA30, 1986HA1B, 1986MA19, 1986ME06, 1986MO13, 1986SA30, 1986SH1F, 1986UT01, 1986XU02, 1986XU1B, 1987AK1A, 1987AR19, 1987BA38, 1987BA39, 1987BU07, 1987DE37, 1987FE1A, 1987GE1B, 1987HE1H, 1987HI05, 1987JA06, 1987KO15, 1987LY04, 1987MU03, 1987NA01, 1987PO23, 1987RO10, 1987ST01, 1987TR05, 1987WA09, 1987YA16, 1988BL09, 1988CA06, 1988KI05, 1988KR11, 1988RU01, 1988SA19, 1988SI01, 1988TS03). Applications: (1983AM1A, 1983KU1C, 1985KO47, 1986EN1A, 1986WE1E). Muon and neutrino capture and reactions: (1983GM1A, 1985MI1D, 1987KU23, 1987SU06). Pion and kaon capture and reactions (See also reactions 23 and 48.): (1982BE1D, 1983AN1F, 1983BA71, 1983FE07, 1983GE12, 1983GE13, 1983GE1C, 1983GM1A, 1983MA40, 1983ZIZZ, 1984BA1U, 1984CO1D, 1984ER1B, 1984KA1C, 1984MA1F, 1985IM1A, 1985RO17, 1985TU1B, 1985ZI04, 1986BE1P, 1986GA1F, 1986GA1H, 1986MA1C, 1986PE05, 1986RA16, 1986RO03, 1988AB05, 1987LE1E, 1987NA04, 1987SI18, 1988GIZU, 1988GIZT, 1988RIZZ). Hypernuclei: (1982KA1D, 1983FE07, 1983SH38, 1983SH1E, 1984BO1H, 1984CH1H, 1984ER1A, 1984MA1F, 1984MI1C, 1984MI1E, 1984SH1J, 1984ZH1B, 1985AH1A, 1985DEZY, 1985GU1J, 1986AN1R, 1986CH1P, 1986DA1B, 1986GA1H, 1986MA1C, 1986MA1W, 1987BO1L, 1987MI38, 1987PO1H). Other topics: (1983BI1C, 1985AN28, 1986IS04, 1986YA1F, 1987BA2J, 1988AJ1B, 1988KW02, 1988OR1C). Groundstate properties of ^{10}B: (1983ANZQ, 1983VA31, 1984BR25, 1984MIZM, 1984NI12, 1984VA06, 1985AN28, 1985GO1A, 1985HA18, 1985ZI05, 1986DO1E, 1986GL1A, 1986RO03, 1987KI1C, 1987LE33, 1988VA03, 1988WO04).
Q = +84.72 ± 0.56 mb: see (1978LEZA). Mass of ^{10}B: (1988WA18) have reevaluated the evidence on the mass of ^{10}B: the mass excess is 12050.99 ± 0.27 keV. This readjustment includes the value obtained by (1984EL05): 12937.32 ± 0.57 μu [mass spectrometer]. I am indebted to A.H. Wapstra for his comments. Isotopic abundance: (19.9 ± 0.2)% (1984DE53).
B(E2)↓ (_{V}) = 4.18 ± 0.02 e^{2} · fm^{4} (1983VE03).
Observed resonances are displayed in Table 10.8 (in PDF or PS). For a discussion of isovector parity mixing between ^{10}B*(5.16, 5.11) [2^{+}; T = 1 and 2^{}; T = 0] see (1984NA07). For a preliminary report involving a target of laserpolarized ^{6}Li atoms see (1987MU13). See also (1984YA1A, 1985CA41; astrophys.).
The excitation functions for neutrons [from threshold to E_{α} = 15.5 MeV] and for deuterons [E_{α} = 9.5 to 25 MeV; d_{0}, d_{1} over most of range] do not show resonance structure: see (1974AJ01, 1979AJ01). See also (1985GU1J; theor.).
Excitation functions of α_{0} and α_{1} have been reported for E_{α} ≤ 18.0 MeV and 9.5 to 12.5 MeV, respectively: see (1974AJ01). Reported anomalies are displayed in Table 10.9 (in PDF or PS). Elastic scattering and VAP measurements are reported for E(pol. ^{6}Li) = 15.1 to 22.7 MeV [see (1984AJ01)] and at E(pol. ^{6 }Li) = 19.8 MeV (1986CAZT; also TAP; prelim.). Small anomalies have been reported in reaction (b) corresponding to ^{10}B*(8.67, 9.65, 10.32, 11.65): see (1984AJ01). See, however, Table 10.5 (in PDF or PS). See also ^{6}Li, (1987BU27), (1986ST1E; applications) and (1986GA1F, 1986YA15, 1988LE06: theor.).
Angular distributions of deuteron groups have been determined at E(^{6}Li) = 2.4 to 9.0 MeV (d_{0}, d_{1}, d_{3}) and 7.35 and 9.0 MeV (d_{4}, d_{5}). The d_{2} group is also observed but its intensity is weak: see (1974AJ01) and ^{12}C in (1980AJ01).
Capture γrays have been observed for E(^{3}He) = 0.8 to 6.0 MeV. The γ_{0} and γ_{5} yields [to ^{10}B*(0, 4.77)] show resonances at E(^{3}He) = 1.1 and 2.2 MeV [E_{res} = 0.92 and 2.1 MeV], the γ_{1} and γ_{4} yields [to ^{10}B*(0.72, 3.59)] at 1.4 MeV and the γ_{4} yield at 3.4 MeV: see Table 10.10 (in PDF or PS) in (1979AJ01). Both the 1.1 and 2.2 MeV resonances [^{10}B*(18.4, 19.3)] appear to result from swave capture; the subsequent decay is to two 3^{+} states [^{10}B*(0, 4.77)]. Therefore the most likely assignment is 2^{}, T = 1 for both [there appears to be no decay of these states via α_{2} to ^{6}Li*(3.56) which has J^{π} = 0^{+}, T = 1: see reaction 9]. The assignment for ^{10}B*(18.8) [1.4 MeV resonance] is 1^{+} or 2^{+} but there appears to be α_{2} decay and therefore J^{π} = 2^{+}. ^{10}B*(20.2) [3.4 MeV resonance] has an isotropic angular distribution of γ_{4} and therefore J^{π} = 0^{+}, 1^{}, 2^{}. The γ_{2} group resonates at this energy which eliminates 2^{}, and 0^{+} is eliminated on the basis of the strength of the transition which is too large for E2. See (1974AJ01) for references.
The excitation curve is smooth up to E(^{3}He) = 1.8 MeV and the n_{0} yield shows resonance behavior at E(^{3}He) = 2.2 and 3.25 MeV, Γ_{lab} = 270 ± 30 and 500 ± 100 keV. No other resonances are observed up to E(^{3}He) = 5.5 MeV. See Table 10.10 (in PDF or PS) in (1979AJ01), (1986AB10; theor.) and (1974AJ01).
The yield of protons has been measured for E(^{3}He) = 0.60 to 4.8 MeV: there is some indication of weak maxima at 1.1, 2.3 and 3.3 MeV. Measurements of A_{y} for the groundstate group at E(pol. ^{3}He) = 14 MeV (1983LE17, 1983RO22) and 33 MeV (1983LE17) and of the polarization at E(^{3}He) = 14 MeV (1984ME11, 1984TR03) have been reported. P = A in this and in the inverse reaction [see reaction 4 in ^{12}C in (1985AJ01) for some additional comments]. For earlier references see (1984AJ01). See also (1986AB10; theor.).
Yields of deuterons have been measured for E(^{3}He) = 1.0 to 2.5 MeV (d_{0}) and yields of tritons are reported for 2.0 to 4.2 MeV (t_{0}): a broad peak is reported at E(^{3}He) ≈ 3.5 MeV in the t_{0} yield. See (1979AJ01) for references. Polarization measurements are reported at E(pol. ^{3}He) = 33.3 MeV for the deuteron groups to ^{8}Be*(16.63, 17.64, 18.15) and for the triton and ^{3}He groups to ^{7}Be*(0, 0.43) and ^{7}Li*(0, 0.48, 4.63): see (1984AJ01).
Excitation functions have been measured for E(^{3}He) = 1.3 to 18.0 MeV: see (1974AJ01). The α_{0} group (at 8°) shows a broad maximum at ≈ 2 MeV, a minimum at 3 MeV, followed by a steep rise which flattens off between E(^{3}He) = 4.5 and 5.5 MeV. Integrated α_{0} and α_{1} yields rise monotonically to 4 MeV and then tend to decrease. Angular distributions give evidence of the resonances at E(^{3}He) = 1.4 and 2.1 MeV seen in ^{7}Li(^{3}He, γ)^{10}B: J^{π} = 2^{+} or 1^{}, T = (1) for both [see, however, reaction 5]: Γ_{α} is small. The α_{2} yield [to ^{6}Li*(3.56), J^{π} = 0^{+}, T = 1] shows some structure at E(^{3}He) = 1.4 MeV and a broad maximum at ≈ 3.3 MeV: see Table 10.10 (in PDF or PS) in (1979AJ01). Polarization measurements are reported at E(pol. ^{3}He) = 33.3 MeV to ^{6}Li*(0, 2.19, 3.56): see (1984AJ01). See also (1983AN1D, 1984PA1E).
Angular distributions are reported at E_{α} = 28 and 32 MeV for the n_{0}, n_{1} and n_{2} groups (1985GUZQ; prelim.). See (1979AJ01, 1984AJ01) for the earlier work.
Parameters of observed resonances are listed in Tables 10.10 (in PDF or PS) and 10.11 (in PDF or PS). Table 10.6 (in PDF or PS) summarizes the γtransitions from this and other reactions. For references to the discussion below, see (1974AJ01, 1979AJ01, 1984AJ01). The E_{p} = 0.32 MeV resonance (^{10}B* = 6.87 MeV) is ascribed to swave protons because of its comparatively large proton width [see ^{9}Be(p, p)] and because of the isotropy of the γradiation. The strong transition to ^{10}B*(1.74) requires E1 and hence J^{π} = 1^{}, T = 0. T = 0 is also indicated by the large deuteron width. On the other hand, the strength of E1 transitions to ^{10}B*(0.7, 2.1) indicates T = 1. The amplitudes for the T = 0 and T = 1 parts of the wave function for ^{10}B*(6.87) are 0.92 and 0.39, respectively. For the 5.16 → 1.74 decay see Table 10.6 (in PDF or PS). The proton capture data near E_{p} = 1 MeV appears to require at least five resonant states, at E_{p} = 938, (980), 992, 1083 and 1290 keV. The narrow E_{p} = 1083 keV level (^{10}B* = 7.56 MeV) is formed by pwave protons, J^{π} = 0^{+} [see ^{9}Be(p, p), ^{9}Be(p, α)]. The isotropy of the γrays supports this assignment. The strong M1 transitions to J^{π} = 1^{+}, T = 0 levels at 0.72, 2.15 and 5.18 MeV (Table 10.11 (in PDF or PS)) indicate T = 1. The width of ^{10}B*(5.18) observed in the decay is 100 ± 10 keV. The excitation function for groundstate radiation shows resonance at E_{p} = 992 (Γ = 80 keV) and 1290 keV (Γ = 230 keV). Elastic scattering studies indicate swave formation and J^{π} = 2^{} for both. For the lower level (E_{x} = 7.48 MeV) the intensity of the g.s. capture radiation, Γ_{γ} = 25 eV indicates E1 and T = 1. The angular distribution of γrays, 1 + 0.1 sin^{2}θ, is consistent with swave formation with some dwave admixture or with some contribution from a nearby pwave resonance; possibly a J^{π} = 2^{+} level at E_{p} = 980 keV. The angular distribution of groundstate radiation at E_{p} = 1330 keV is isotropic and Γ_{γ} = 8.5 eV, supporting E1, T = 1 for this level (E_{x} = 7.75 MeV). Transitions to ^{10}B*(0.7) [γ_{1}] show resonance at E_{p} = 992, 1290 and 938 keV, Γ = 155 keV. The latter is presumably also a resonance for (p, d) and (p, α). An assignment of J^{π} = 2^{}, T = 0 is consistent with the data, although the E1 radiation then seems somewhat too strong for a ΔT = 0 transition. A resonance for capture radiation at E_{p} = 2.567 ± 0.003 (E_{x} = 8.895 MeV) has a width of 40 ± 2 keV and decays mainly via ^{10}B*(0.7) (unpublished Ph.D. thesis). It appears from the width that this resonance corresponds to that observed in ^{9}Be(p, α), J^{π} = 2^{+}, T = 1 and not to the ^{9}Be(p, n) resonance at the same energy. A further resonance is reported at E_{p} = 4.72 ± 0.01 MeV, Γ ≈ 0.5 MeV. In the range E_{p} = 4 to 18 MeV, the γ_{0} yield at 90° shows [unpublished Ph.D. thesis] the resonance at E_{p} = 4.7 MeV (E_{x} = 10.7 MeV) and fluctuations suggest states at E_{x} ≈ 14.6, 15.6 and 19.7 MeV. ^{10}B*(19.7) possibly decays via E1 and therefore J^{π} = 2^{}, 3^{}, 4^{}. The other three states presumably decay by M1 and therefore J^{π} = 2^{+}, 3^{+}, 4^{+}. These fluctuations appear on a nearly constant γ_{0} yield with a 90° differential cross section ≈ 1.5 μb/sr. The average yield of γ_{1} is ≈ 2/3 of the γ_{0} yield. The broad giant resonance peak is centered at E_{x} ≈ 14.5 MeV. Fluctuations in the γ_{1} yield are reported at E_{x} ≈ 12.6, 13.3 and 14.1 MeV. These states presumably decay by M1 to ^{10}B*(0.7) [J_{f}^{π} = 1^{+}] and therefore J_{i}^{π} = 0^{+}, 1^{+}, 2^{+}. The weak γ_{2} yield (to ^{10}B*(1.74) [J^{π}; T = 0^{+}; 1]) seems to exhibit a broad peak centered near E_{x} = 15 MeV (maximum 90° differential cross section ≈ 0.5 μb/sr) and possibly some structure near E_{x} = 20 MeV. The γ_{3} yield (to ^{10}B*(2.15) [J^{π} = 1^{+}]) increases to ≈ 0.4 μb/sr at E_{x} ≈ 16 MeV and seems to remain constant beyond that energy, with some suggestion of a fluctuation corresponding to E_{x} ≈ 12.9 MeV. ^{10}B*(12.9) appears to have positive parity. Angular distributions of γ_{0}, γ_{1}, γ_{2} and γ_{3} are also reported [in an unpublished Ph.D. thesis]. The magnetic moment of ^{10}B*(0.72) has been studied via γγ correlations from ^{10}B*(7.56): g = +0.63 ± 0.12. See also (1985KI1B, 1985NE1C; applications), (1984YA1A; astrophysics) and (1983GO28, 1986NA15; theor.).
Resonances in the neutron yield occur at E_{p} = 2562 ± 6, 4720 ± 10 and, possibly, at 3500 keV with Γ_{c.m.} = 84 ± 7, ≈ 500 and ≈ 700 keV. These three resonances correspond to ^{10}B*(8.890, 10.83, 9.7): see Table 10.13 (in PDF or PS) in (1974AJ01). Cross section measurements for the (p, n) and (p, n_{0}) reactions have been obtained by (1983BY01; E_{p} = 8.15 to 15.68 MeV) [see also for a review of earlier work]. They indicate possible structure in ^{10}B near 13  14 MeV (1983BY01). The E_{p} = 2.56 MeV resonance is considerably broader than that observed at the same energy in ^{9}Be(p, α) and ^{9}Be(p, γ) and the two resonances are believed to be distinct. The shape of the resonance and the magnitude of the cross section can be accounted for with J^{π} = 3^{} or 3^{+}; the former assignment is in better accord with ^{10}Be*(7.37). For J^{π} = 3^{}, θ_{n}^{2} = 0.135, θ_{p}^{2} = 0.115 (R= 4.47 fm): see (1974AJ01). The analyzing power for n_{0} has been measured for E_{p} = 2.7 to 17 MeV (1980MA33, 1983BY02, 1986MU07) as has the polarization in the range E_{p} = 2.7 to 10 MeV (1983BY02). See (1983BY02, 1986MU07) for discussions of the σ(θ), A_{y}(θ) and P(θ) measurements. Polarization measurements have also been reported at E_{pol. p} = 3.9 to 15.1 MeV and 800 MeV: [see (1984AJ01)] and at 53.5, 53.9 and 71.0 MeV (1988HE08) [K^{y'}_{y}, K^{z'}_{z}]. See also ^{9}B, (1985TE1C), (1985CA41; astrophys.), (1986AL1J; applications) and (1988ZVZZ; theor.).
The elastic scattering has been studied for E_{p} = 0.2 to 9.5 MeV [see (1974AJ01, 1979AJ01, 1984AJ01)] and at E_{p} = 2.0 to 3.8 MeV (1983AL10). Below E_{p} = 0.7 MeV only swaves are present exhibiting resonance at E_{p} = 330 keV [^{10}B*(6.88)], J^{π} = 1^{}. Between E_{p} = 0.8 to 1.6 MeV polarization and crosssection measurements are well fitted by a phaseshift analysis, using only the ^{3}S_{1}, ^{5}S_{2}, ^{5}P_{1} and ^{5}P_{2} phases. Four levels satisfy the data, 1^{+} and 2^{} states at E_{x} = 7.48 MeV, a sharp 0^{+} state at E_{x} = 7.56 MeV, and a 1^{} state at 7.82 MeV: see Table 10.12 (in PFD or PS). Pronounced minima at E_{p} = 2.48 and 2.55 MeV are observed in the polarization (p_{0}): these are ascribed to T = 1 analogs of the 3^{} and 2^{+} states ^{10}Be*(7.37, 7.52). A strong anomaly is observed at E_{p} = 6.7 MeV: see Table 10.12 (in PDF or PS). Polarization measurements have been reported at E_{p} = 0.9 to 49.8 MeV, at 138.2 and 145 MeV, and at 990 MeV [see (1974AJ01, 1979AJ01)] as well as at E_{pol. p} = 780 MeV and at 1 GeV [see (1984AJ01)]. Recently, A_{y} measurements have been reported at E_{pol. p} = 200 MeV (1985GLZZ; p_{0}; prelim.) and 220 MeV (1985RO15; p_{0}, p_{2}). For inclusive proton scattering at E_{pol. p} = 303 MeV see (1987MO04). See also (1985SE15). For reaction (b) see (1984WA21, 1986MEZZ, 1988BO47). Reaction (c) at E_{pol. p} = 150.5 MeV has been studied by (1985WA13; A_{y}). For other high energy studies see (1984AJ01). See also ^{9}Be, (1982BA78, 1985RO1C, 1985TR1A, 1986KO1R), (1984ZU01, 1985SA1G, 1986BA88, 1986MU07) and (1983KA37, 1984SH1K, 1985DY03, 1986HA1K; theor.).
Polarization measurements (reaction (b)) are reported at E_{pol. p} = 23.06 MeV: see (1984AJ01). For a study at E_{p} = 190 and 300 MeV see (1987GR11). See also (1985SE15).
Knowledge of the cross sections of these two reactions at low energies is of importance for power generation and astrophysical considerations. Absolute cross sections for the d_{0} and α_{0} groups have been measured for E_{p} = 28 to 697 keV with ± 5  6% uncertainty. The value of S_{c.m.} (E = 0) for the combined cross sections is estimated to be 35^{+45}_{15} MeV · b. At the 0.33 MeV resonance (J^{π} = 1^{}), σ_{α0} = 360 ± 20 mb and σ_{ d0} = 470 ± 30 mb. The data (including angular distributions), analyzed by an Rmatrix compound nucleus model, were fitted by assuming three states at E_{p}(c.m.) = 20 keV (J^{π} = 2^{+}; 3^{+} possible) [E_{x} = 6.57 MeV] [see, however, Table 10.8 (in PDF or PS)], 310 keV (1^{}) and 410 keV (1^{+}; 2^{+} or 3^{+} possible): see (1979AJ01). See also (1988ABZW). Measurements of excitation functions for deuterons and αparticles have been reported at a number of energies to E_{p} = 15 MeV: see (1974AJ01, 1979AJ01). Observed resonances are displayed in Table 10.13 (in PDF or PS). Polarization measurements have been made in the range E_{p} = 0.30 to 15 MeV and at 185 MeV [see (1974AJ01, 1979AJ01)] and at E_{pol. p} = 60 MeV (1987KA25; A_{y}; inclusive deuteron spectra). For a fragmentation study at E_{p} = 190 and 300 MeV see (1987GR11). See also (1983AN1D, 1984BA1L, 1985SE15, 1986ER1B), (1984YA1A, 1985CA41; astrophysics), (1984PA1E) and (1982BR1A; theor.).
Neutron groups are observed corresponding to the ^{10}B states listed in Table 10.14 (in PDF or PS). Angular distributions have been measured for E_{d} = 0.5 to 16 MeV [see (1974AJ01, 1979AJ01)], at 8 MeV (1986BA40; n_{0} → n_{5}, n_{6+7+8}; also at 4 MeV to the latter) and at 18 MeV (1987KAZL; n_{0}, n_{1}). Observed γtransitions are listed in Table 10.16 (in PDF or PS) of (1979AJ01). See Tables 10.6 (in PDF or PS) and 10.7 (in PDF or PS) here for the parameters of radiative transitions and for τ_{m}. From all the various experiments the following picture emerges: the first five states of ^{10}B have even parity [from l_{p}]. The ground state is known to have J= 3, by direct measurement, and ^{10}B*(1.74) has J^{π} = 0^{+} and is the T = 1 analog of the ^{10}C_{g.s.} [from the β^{+} decay of ^{10}C]. Then looking at the branching ratios and lifetimes of the other states, the sequence for ^{10}B*(0, 0.72, 1.74, 2.15, 3.59) is J^{π} = 3^{+}, 1^{+}, 0^{+}, 1^{+}, 2^{+} [see discussion in (1966LA04, 1966WA10)]. See also ^{11}B in (1985AJ01), (1983TA17, 1985SM08) and (1986OV1A; applications).
Deuteron groups have been observed to a number of states of ^{10}B: see Table 10.14 (in PDF or PS). Angular distributions have been reported at E(^{3}He) = 10 to 33.3 MeV [see (1974AJ01, 1979AJ01, 1984AJ01)]. Spectroscopic factors obtained in the (d, n) and (^{3}He, d) reactions are not in good agreement: see the discussions in (1974KE06, 1980BL02). See also (1986AV01; theor.).
Angular distributions have been studied at E_{α} = 27, 28.3 and 43 MeV [see (1979AJ01)], at 30.2 MeV (1984VA07; t_{0}, t_{1}, t_{3}, t_{4}) and at 65 MeV (1980HA33). In the latter experiment DWBA analyses have been made of the distributions to ^{10}B*(0, 0.72, 1.74, 2.15, 3.59, 5.2, 5.92, 6.13, 6.56, 7.00, 7.5, 7.82, 8.9) and spectroscopic factors were derived. The distributions to ^{10}B*(4.77, 6.03) could not be fitted by either DWBA or coupled channel analyses. In general coupledchannels calculations give a better fit to the 65 MeV data than does DWBA (1980HA33; see also for a comparison with the (d, n) and (^{3}He, d) results).
At E(^{7}Li) = 34 MeV angular distributions have been obtained for the ^{6}He ions to the first four states of ^{10}B. Absolute values of the spectroscopic factors are S= 0.88, 1.38 (p_{1/2} or p_{3/2}), 1.40 and 0.46 (p_{1/2}), 0.54 (p_{3/2}) for ^{10}B*(0, 0.74, 1.74, 2.15) (FRDWBA analysis): see (1979AJ01). See also (1988AL1G).
See ^{10}Be.
The yield of the n_{1} group has been studied for E_{p} = 0.9 to 2.0 MeV: see ^{11}B in (1990AJ01), (1986TE1A).
Absolute measurements have been made of the ^{10}B(γ, Tn) cross section from threshold to 35 MeV with quasimonoenergetic photons; the integrated cross section is 0.54 in units of the classical dipole sum (60 NZ/A MeV · mb). The (γ, 2n) + (γ, 2np) cross section is zero, within statistics, for E_{γ} = 16 to 35 MeV: see (1979AJ01) and (1988DI02). The giant resonance is broad with the major structure contained in two peaks at E_{x} = 20.1 ± 0.1 and 23.1 ± 0.1 MeV (σ_{max} ≈ 5.5 mb for each of the two maxima): see (1979AJ01). (1987AH02) [and H. H. Thies, private communication] [using bs] report two broad [Γ ≈ 2 MeV] maxima at 20.2 and 23.0 MeV [± 0.05 MeV] (σ = 5.0 and 6.0 mb, respectively; ± 10%) and a minor structure at E_{x} = 17.0 MeV. For reactions (b) and (c) see (1988SU14). For reaction (d) see ^{10}Be. See also (1974AJ01) and (1983GO28, 1985GO1A, 1987KI1C; theor.).
Inelastic electron groups are displayed in Table 10.15 (in PDF or PS). (1986FRZZ; prelim.) have measured the form factors for ^{10}B*(0, 1.74, 5.16). For reactions (b) and (c) see (1984AJ01). For reaction (d) see ^{10}Be. See also (1984DO20, 1986PE05, 1987DE43, 1987HI1F) and (1986HA1M; theor.).
Angular distributions have been studied for E_{n} = 1.5 to 14.1 MeV [see (1974AJ01, 1979AJ01)] and at 3.02 to 12.01 MeV (1986SAZR, 1987SAZX; prelim; n_{1} → n_{5}), 8 to 14 MeV (1983DA22; n_{0}) and 9.96 to 16.94 MeV (1986MU08; prelim.; n_{0}). See also ^{11}B in (1985AJ01, 1990AJ01), (1984TU02) and (1983KO1F; theor.).
Angular distributions have been measured for a number of energies between E_{p} = 3.0 and 800 MeV [see (1974AJ01, 1979AJ01, 1984AJ01)] and at 10 to 17 MeV (1986MU08; p_{0}; prelim.). Table 10.16 (in PDF or PS) displays the states observed in this reaction. The γray results are shown in Table 10.6 (in PDF or PS). See also (1979AJ01). For τ_{m} see Table 10.7 (1983VE03). Axions may cause e^{+}e^{} pairs in competition with γray emission in an isoscalar M1 transition: a search for axions was undertaken in the case of the 3.59 → g.s. [2^{+} → 3^{+}] transition. It was negative (1986DE25). A beam dump experiment and other attempts to observe axions are discussed in (1987HA1O). For reaction (b) at E_{p} = 1 GeV see (1985BE30, 1985DO16; prelim.) and (1974AJ01). See also (1988KRZY), (1985KI1B, 1988KOZL; applied) and ^{11}C in (1985AJ01, 1990AJ01).
Angular distributions have been reported at E_{d} = 4 to 28 MeV: see (1974AJ01, 1979AJ01). Observed deuteron groups are displayed in Table 10.16 (in PDF or PS). The very low intensity of the group to ^{10}B*(1.74) and the absence of the group to ^{10}B*(5.16) is good evidence of their T = 1 character: see (1974AJ01).
Angular distributions of elastically scattered tritons have been measured at E_{t} = 1.5 to 3.3 MeV: see (1974AJ01).
Angular distributions have been measured at E(^{3}He) = 4 to 46.1 MeV [see (1974AJ01, 1979AJ01, 1984AJ01)] and at 2.10 and 2.98 MeV (1987BA34; elastic). L = 2 gives a good fit of the distributions of ^{3}He ions to ^{10}B*(0.72, 2.15, 3.59, 6.03): derived β_{L} are shown in Table 10.19 (in PDF or PS) of (1979AJ01). See also Table 10.16 (in PDF or PS) here, ^{13}N in (1986AJ01) and (1987RA36; theor.).
Angular distributions have been measured for E_{α} = 5 to 56 MeV [see (1974AJ01, 1979AJ01, 1984AJ01)] and at 91.8 MeV (1985JA12; α_{0}). Reaction (b) has been studied at E_{α} = 24 and 700 MeV: see (1979AJ01, 1984AJ01). See also (1983GO27, 1985SH1D; theor.).
Elasticscattering angular distributions have been studied at E(^{6}Li) = 5.8 and 30 MeV and at E(^{7}Li) = 24 MeV: see (1979AJ01).
Elastic angular distributions have been measured at E(^{10}B) = 20.1 and 30.0 MeV (1983SR01). For yield and cross section measurements see (1983SR01, 1986CU02). See also (1984IN03, 1986RO12; theor.).
Elastic angular distributions (reaction (a)) have been studied at E(^{10}B) = 8, 13 and 21 MeV. For yields and reaction (b) see (1979AJ01). See also (1985BE1A, 1985CU1A) and (1984HA43, 1986RO12; theor.).
Elastic angular distributions have been measured at E(^{10}B) = 18 and 100 MeV for reaction (a) [see (1979AJ01)] and at 18  46 MeV [see (1984AJ01)] and 42.5, 62.3 and 80.9 MeV for reaction (b) (1985MA10). For yield, cross section and fusion experiments see (1983DA20, 1983MA53, 1985MA10, 1988MA07) and (1984AJ01). See also (1984DEZX, 1984HAZK, 1987SAZW), (1982BA1D, 1985BA1T; astrophysics), (1983BI13, 1983DU13, 1984FR1A, 1984HA53, 1985BE1A, 1985CU1A, 1986MA19) and (1983HA1E, 1984HA43, 1984IN03, 1984MAZT, 1985KO1J, 1986RO12; theor.).
Angular distributions have been reported at E(^{10}B) = 100 MeV and E(^{14}N) = 73.9 and 93.6 MeV: see (1979AJ01, 1984AJ01). For fusion cross section studies see (1979AJ01, 1984AJ01) and (1983DE26). See also (1983BI13, 1983DA10, 1984FR1A, 1984HA53, 1985BE1A, 1985CU1A) and (1983GO13, 1984HA43, 1984IN03, 1985KO1J, 1986RO12; theor.).
Elastic angular distributions (reaction (a)) have been studied at E(^{16}O) = 15.0 to 32.5 MeV and at E(^{10}B) = 33.7 to 100 MeV: see (1979AJ01, 1984AJ01). The elastic scattering for reaction (c) has been studied at E(^{18}O) = 20, 24 and 30.5 MeV: see (1974AJ01). For yield and fusion cross section measurements see (1984AJ01) and (1984GO05). See also (1983BI13, 1984FR1A, 1984HA53) and (1983GO13, 1985HU04; theor.).
The elastic scattering has been investigated for E(^{19}F) = 20 and 24 MeV for reaction (a) and E(^{10}B) = 65.9 MeV for reaction (b): see (1974AJ01, 1984AJ01).
The elastic scattering for both reactions has been studied at E(^{10}B) = 87.4 MeV: see (1984AJ01). The elastic scattering for reaction (b) has been measured at E(^{10}B) = 34 MeV by (1985WI18).
The elastic scattering for all three reactions has been studied at E(^{10}B) = 41.6 and ≈ 50 MeV [and also at 33.7 MeV for reaction (b)]: see (1984AJ01). See also (1984TE1A).
The elastic scattering has been studied at E(^{10}B) = 44 MeV for reaction (a) (1985WI18) and at 46.6 MeV for reaction (b): see (1984AJ01).
The halflife of ^{10}C is 19.255 ± 0.53 sec [see (1974AJ01, 1979AJ01)]: the decay is to ^{10}B*(0.72, 1.74) with branching ratios of (98.53 ± 0.02)% and (1.465 ± 0.014)% and log ft= 3.047 for the transition to ^{10}B*(0.72) and 3.492 ± 0.005 for that to the analog state, ^{10}B*(1.74): see Table 10.20 (in PDF or PS) in (1979AJ01). The excitation energies of the two states are 718.32 ± 0.09 and 1740.16 ± 0.17 keV [E_{γ} = 718.29 ± 0.09 and 1021.78 ± 0.14 keV]. See (1979AJ01) for a further discussion of the decay. See also (1988GI02, 1988KRZY).
The intensities of the transitions to ^{10}B*(3.59, 5.16) [T = 0 and 1, respectively] depend on the region of the giant dipole resonance in ^{11}B from which the decay takes place: it is suggested that the lowerenergy region consists mainly of T = 1/2 states and the higherenergy region of T = 3/2 states: see ^{11}B in (1980AJ01). See also ^{11}B in (1985AJ01, 1990AJ01) and (1984AL22).
Angular distributions of deuteron groups have been measured at several energies in the range E_{p} = 17.7 to 154.8 MeV [see (1979AJ01)] and at 18.6 MeV (1985BE13; d_{0}, d_{1}). The population of the first five states of ^{10}B and of ^{10}B*(5.2, 6.0, 6.56, 7.5, 11.4 ± 0.2, 14.1 ± 0.2) is reported. For reaction (b) see (1985BE30, 1985DO16; 1 GeV; prelim.). See also (1988GUZW) and (1988BE1I; theor.).
Angular distributions have been measured at E_{d} = 11.8 MeV ( t_{0} → t_{3}; l = 1) [see (1974AJ01)] and at 18 MeV (1987GUZZ, 1988GUZW; prelim.).
Reported levels are displayed in Table 10.17 (in PDF or PS). Angular distributions have been measured at a number of energies between E(^{3}He) = 1.0 and 33 MeV [see (1974AJ01)] and at 23.4 MeV (1987VA1I; α_{0}, α_{1}; prelim.). For the decay of observed states see Table 10.6 (in PDF or PS). The αα angular correlations (reaction (b)) have been measured for the transitions via ^{10}B*(5.92, 6.03, 6.13, 6.56, 7.00). The results are consistent with J^{π} = 2^{+} and 4^{+} for ^{10}B*(5.92, 6.03) and require J^{π} = 3^{} for ^{10}B*(6.13). There is substantial interference between levels of opposite parity for the αparticles due to ^{10}B*(6.56, 7.00): the data are fitted by J^{π} = 3^{+} for ^{10}B*(7.00) and (3, 4)^{} for ^{10}B*(6.56) [the ^{6}Li(α, α) results then require J^{π} = 4^{}]. See, however, reaction 15, and see (1974AJ01) for the references. See also (1988GOZB; theor.).
Angular distributions have been measured at E(^{7}Li) = 34 MeV involving ^{10}B*(0, 0.72, 1.74, 2.15) and ^{8}Li_{g.s.} (as well as ^{8}Li*(0.98) in the case of the ^{10}B_{g.s.} transition) (1987CO16).
For reaction (a) see (1986SH1M) and ^{12}C in (1990AJ01). For reaction (b) see ^{12}C in (1985AJ01). See also (1984DO17) and (1984CH1A, 1986GU1G; theor.).
See (1985FR07, 1987FR16; E_{n} = 319 to 545 MeV). See also (1986DO12).
At E_{π+} = 180 MeV and E_{π} = 220 MeV, ^{10}B*(0.72, 2.15) are populated: see (1984AJ01). At E_{π+} = 150 MeV momentum distributions of pions to unresolved states of ^{10}B are reported by (1987HU13).
Angular distributions of ^{3}He ions have been measured for E_{p} = 39.8, 51.9 and 185 MeV: see (1979AJ01). ^{10}B*(0, 0.72, 1.74, 2.15, 3.59, 4.77, 5.16, 5.92, 6.56, 7.50, 8.90) are populated. For reaction (b) see (1985DE17; E_{p} = 58 MeV; ^{10}B*(0.72, 1.74)) and (1984AJ01). See also (1986VDZY) and (1986GO28, 1986ZH03, 1987GA08, 1987KW01; theor.).
Alpha groups have been observed to most of the known states of ^{10}B below E_{x} = 7.1 MeV: see Table 10.23 (in PDF or PS) in (1974AJ01). Angular distributions have been measured for E_{d} = 5.0 to 40 MeV: see (1979AJ01). Singleparticle Svalues are 1.5, 0.5, 0.1, 0.1 and 0.3 for ^{10}B*(0, 0.72, 2.15, 3.59, 4.77). A study of the m_{s} = 0 yield at E_{d} = 14.5 MeV (θ = 0°) leads to assignments of 3^{+}, 2^{} and (3^{+}, 4^{}) for ^{10}B*(4.77, 5.11, 6.56). The population of the isospinforbidden group to ^{10}B*(1.74) [α_{2}] has been studied with E_{d} up to 30 MeV: see ^{14}N in (1986AJ01). See also (1984LOZZ).
Angular distributions have been reported at E_{α} = 42 and 46 MeV: see (1979AJ01). At E_{α} = 65 MeV, an investigation of the ^{6}Li breakup shows that ^{10}B*(0, 0.72, 2.16, 3.57, 4.77, 5.2, 5.9, 6.0) are involved: see (1984AJ01). See also (1987GA20).
At E(^{7}Li) = 78 MeV angular distributions have been measured to ^{10}B*(0, 2.15) (1986GLZV; prelim.).
Angular distributions (reaction (a)) involving ^{10}B*(0, 0.7) have been studied at E(^{12}C) = 49.0 to 75.5 and 93.8 MeV. Angular distributions (reaction (b)) involving ^{10}B*(0, 0.72, 2.15, 3.59) have been measured at E(^{14}N) = 53 MeV and 78.8 MeV (not to ^{10}B*(3.59)): see (1979AJ01, 1984AJ01) for references. See also (1986AR04, 1986CR1A, 1986MOZV).
Angular distributions have been measured at E_{p} = 5.8 to 18 MeV and 43.7 and 50.5 MeV: see (1979AJ01). See also ^{14}N in (1986AJ01) and (1985MAZG; theor.).
See (1986VDZY; E_{p} = 50 MeV; prelim.). See also (1986GO28; theor.).
At E_{d} = 80 MeV angular distributions are reported to ^{10}B*(0, 0.72, 2.15, 3.59, 4.8, 6.04, 7.05, 8.68): see (1984AJ01).
See (1985WI18).
