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GENERAL: See also (1981AJ01) and Table 14.25 [Table of Energy Levels] (in PDF or PS) here.

Nulcear models: (1982SA1U, 1983SH38, 1984SA37).

Electromagentic transitions: (1982LA26, 1982RI04, 1984MA67, 1985LA06).

Astrophysical questions: (1981GU1D, 1981WA1Q, 1984MA67, 1985LA06).

Applied work: (1982HI1H).

Complex reactions involving ¹⁴C: (1985WO1B).

Reactions involving pions (See also reactions 5, 7 and 10.): (1979ME2A, 1980BE35, 1981AU1C, 1981DU1H, 1981SI09, 1982COZV, 1982GR1K, 1982MU09, 1983SH31, 1983TR1J, 1983VI01, 1984CO1V, 1984JA1F, 1984MI15, 1985ALZX).

Hypernuclei: (1981WA1J, 1982KA1D, 1983SH38).

Other topics: (1982NG01, 1983FR1A, 1983OL1A, 1984BA1H).

Ground state of ¹⁴O: (1982NG01, 1983ANZQ).

1. 14O(β+)14N

Qm = 5.1431

The best value of τ_1/2 = 70.606 ± 0.018 sec: see (1978WI04). See also (1976AJ04). ¹⁴O decays predominantly to its analog state ¹⁴N*(2.31) [J^π; T = 0⁺; 1; E_x = 2312.798 (11) keV, E_γ = 2312.593 (11) keV (1982WA16)]. The branching ratio to the state is (99.336 ± 0.010)%. This value is obtained by adopting (0.61 ± 0.01)% (1966SI05) and (0.054 ± 0.002)% [the weighted mean of the values of (1980WI13, 1981HE19)] for the branching ratios to ¹⁴N*(0, 3.95) [both 1⁺; 0 states]. Log f^Rt = 3.4892 (2) for the 0⁺ → 0⁺ transition (1981WH03), using the Wapstra masses for the atomic mass excess of ¹⁴N, ¹H and n; E_thresh. for the ¹⁴N(p, n) threshold (1981WH03) and E_x shown above for ¹⁴N*(2.31) (1982WA16). See (1983WA09) for other calculations of log f^Rt. For the transitions to ¹⁴N*(0, 3.95) log ft = 7.266 ± 0.009 (1980WI13) and 3.15 ± 0.02, respectively. See also (1982KO28), (1980WI1N, 1982SZ1A, 1983KO2A, 1985HA1T), (1982RA1M, 1984BO1Q; astrophys.) and (1981SZ01, 1983SZ01, 1984BO03, 1984HA58, 1984HO1L, 1984SZ04; theor.).

2. 12C(3He, n)14O

Qm = -1.1466

Observed neutron groups are displayed in Table 14.26 (in PDF or PS). Angular distributions have been measured at E(³He) = 15, 18, 20, and 25.4 MeV: see (1981AJ01) and ¹⁵O. See also (1984SUZZ).

3. (a) 12C(10B, 8Li)14O	Qm = -16.901
(b) 12C(11B, 9Li)14O	Qm = -24.292

At E(¹⁰B) = 100 MeV angular distributions have been studied to ¹⁴O*(6.27, 9.92), the states preferentially excited. At E(¹¹B) = 114 MeV these two states [J^π = 3^-, 4⁺] are also dominant: see (1981AJ01).

4. (a) 12C(12C, 10Be)14O	Qm = -20.6136
(b) 12C(14N, 12B)14O	Qm = -18.513

At E(¹²C) = 114 MeV [reaction (a)], the population of ¹⁴O*(0, 6.27, 9.9) is reported: it is suggested that ¹⁴O*(9.9) has a (d_5/2)²_{4⁺; 1} configuration. ¹⁴O_g.s. is weakly populated: see (1976AJ04). At E(¹⁴N) = 118 MeV, the population of ¹⁴O*(6.27, 9.9) is reported. At E(¹⁴N) = 155 MeV there is some evidence for the excitation of ¹⁴O*(5.17, 5.92, 8.72, 9.72): see (1981AJ01).

5. 13C(p, π-)14O

Qm = -137.1598

At E_p = 200 MeV the angular distributions of π^- and π⁺ to the ground states of ¹⁴O and ¹⁴C are very different (1980HO20). At E_{pol. p} = 183 to 205 MeV cross sections and analyzing powers for the ground-state transition have been studied by (1982JA05). An angular distribution is also reported by (1982VI05) to the states centered at E_x ≈ 6.5 MeV. See also (1983THZZ, 1984KOZU) and the "GENERAL" section in ¹⁴N here.

6. 13N(p, γ)14O

Qm = 4.6280

This reaction is important in the hot-CNO cycle when its rate is dominated by l = 0 capture through ¹⁴O*(5.17). For Γ_c.m. see the reaction 9 (1985CH06). Calculations have recently been reported: Γ_c.m. = 34.7 keV, Γ_γ = 2.4 eV (1984MA67); Γ_c.m. = 40.1 keV, Γ_γ = 1.9 eV (1985LA06). See also (1983FO1D).

7. 14C(π+, π-)14O

Qm = -4.9867

Angular distributions for the transition to ¹⁴O_g.s. have been measured at E_π⁺ = 164 and 292 MeV [also to the unresolved structure at E_x ≈ 5.9 MeV at 164 MeV] (1984SE14) as well as at E_π⁺ = 50 MeV (1985LE05) and 140 and 200 MeV (1984MOZU). See also (1985SEZZ). At the lower energy the differential cross sections for the DIAS transition are larger than expected from an extrapolation of the higher-energy data (1985LE05). For other cross-section measurements see (1984NA01, 1984SE14). See also (1985KA04; theor.).

8. 14N(p, n)14O	Qm = -5.9255
	Ethresh. = 6353.04 ± 0.08 keV (1981WH03).

Ground-state angular distributions have been measured at E_p = 144 MeV (1980MO10; and to ¹⁴O*(7.77)) as well as at E_p = 35.2 MeV (1984TA02). See also (1980DU16; theor.).

9. 14N(3He, t)14O

Qm = -5.1617

Triton groups have been observed at E(³He) = 44.6 MeV to the first six states shown in Table 14.25 (in PDF or PS) and to levels with E_x = 6.79 ± 0.03, 8.74 ± 0.06, 9.74 ± 0.03, 10.89 ± 0.05, 11.24 ± 0.05, 11.97 (unresolved), 12.84 ± 0.05, 13.01 ± 0.05, 14.15 ± 0.04, 14.64 ± 0.06 and 17.40 ± 0.06 MeV (1967BA13, 1969BA06). See also reaction 47 in ¹⁴N. [The states at 6.79 and 8.74 MeV reported in this reaction are relatively weakly excited and are not observed in reaction 2.] Γ_c.m. of ¹⁴O*(5.17) = 38.1 ± 1.8 keV (1985CH06). See also (1982HAZM, 1982KO28).

10. 16O(π+, d)14O

Qm = 113.6879

See (1982DO01).

11. 16O(p, t)14O

Qm = -20.4045

Angular distributions of ground-state tritons have been studied to E_p = 54.1 MeV: see (1981AJ01). For comparison with the (p, ³He) results see reaction 64 in ¹⁴N.

Triton groups have also been observed to states with E_x = 5.21 ± 0.04, 5.92 ± 0.06, 6.28 ± 0.05, 6.59, 7.77, 8.69 ± 0.06 [weak, not observed in reaction 2], and 9.65 ± 0.06 MeV. Angular distributions have been studied with polarized protons at E_p = 43.8 MeV to ¹⁴O*(0, 5.17, 6.27, 6.59, 7.77, 9.72): see (1976AJ04).