A=13N (1991AJ01)

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¹³N (1991AJ01)

(See 13.14 [Table of Energy Levels] (in PDF or PS) and Energy Level Diagrams for ¹³N)

GENERAL: See also (1986AJ01), 2 [Electromagnetic Transitions in A = 13-15] (in PDF or PS), 13.5 [Total radiation widths of low-lying levels of ¹³C-¹³N] (in PDF or PS) and 13.6 [Parameters of the first T = 3/2 states in ¹³C and ¹³N] (in PDF or PS).

Nuclear models:(1989AM02).

Special states:(1984KO40, 1985RO1J, 1986AN07, 1988RO1R, 1989RO03).

Electromagnetic transitions:(1984VA06, 1987HO1L).

Astrophysical questions:(1985TA1A, 1987RA1D, 1989ST14).

Applied work:(1986HI1B, 1986MA2F, 1986MA1T, 1986WE1E, 1987BU12, 1987LE1H, 1988HI1F, 1988VO1D, 1989AR1J, 1989AR1N, 1989AR1Q, 1989TR1B, 1989WO1B, 1990DA1J).

Complex reactions involving ¹³N:(1985AR09, 1985PO11, 1986HA1B, 1986PO06, 1986UT01, 1987BA38, 1987FE1A, 1987NA01, 1987RI03, 1987ST01, 1988SA19, 1989BA92, 1989WA16, 1989KI13, 1989LYZY, 1989SA10, 1989TA1O, 1989YO02, 1990GL01, 1990WE14).

Muon and neutrino reactions:(1985MI21, 1990FU03, 1990MI1J).

Reactions involving pions, kaons and other mesons:(1985SA06, 1986KU1J, 1986LI1N, 1986SI13, 1986SI22, 1986SU18, 1987MI08, 1988AB05, 1988BU1I, 1988CH1L, 1988HA12, 1988KO1V, 1989AG1B, 1989BE2O, 1990BE12, 1990CA15, 1990KO19, 1990TI1B).

Hypernuclei: (1985BA2D, 1989BA93).

Other topics: (1985AN28, 1986AN07, 1990MU10).

Ground state of ¹³N:(1985AN28, 1986GL1A, 1986SI22, 1987FU06, 1988WA08, 1989AM02, 1989SA10).

μ = -0.32224(35) nm (1978LEZA). See also (1989RA17).

1. ¹³N(β⁺)¹³C Q_m = 2.2205

The weighted mean of τ_1/2 measurements is 9.965 ± 0.0004 min. The decay is entirely to ¹³C_g.s.; log ft = 3.667 ± 0.001: see (1981AJ01). See also (1989KA1S: τ_m = 9.962 ± 0.020 min), (1989SE1C, 1989SE1G, 1990ST08), (1985BA1N, 1986GR04, 1987BA89, 1987FR1C, 1987RI1E, 1987WE1C, 1988BA86, 1988BA1Y, 1988BA2D, 1989DA1H, 1989GU28, 1989KA24; astrophysics) and (1984BO03, 1986SI22, 1989AM02, 1989SA1P, 1989WO1E; theor.).

2. ¹⁰B(³He, γ)¹³N Q_m = 21.6368

The 90° cross sections for γ₀ and γ₂₊₃ have been measured for E(³He) = 4.8 to 14 MeV: no pronounced structures are observed: see (1981AJ01).

3. (a) ¹⁰B(³He, n)¹²N Q_m = 1.573 E_b = 21.6368
(b) ¹⁰B(³He, p)¹²C Q_m = 19.6933

Activation cross sections (reaction (a)) have been reported for E(³He) = 1 to 30.6 MeV: there is some evidence for broad structures. Observed resonances in the yield of proton groups and of 12.7 and 15.1 MeV γ-rays are displayed in 13.15 (in PDF or PS). See also (1981AJ01).

4. (a) ¹⁰B(³He, d)¹¹C Q_m = 3.1961 E_b = 21.6368
(b) ¹⁰B(³He, ³He)¹⁰B
(c) ¹⁰B(³He, α)⁹B Q_m = 12.141

For observed resonances and anomalies see 13.15 (in PDF or PS). See also (1981AJ01).

5. ¹⁰B(α, n)¹³N Q_m = 1.0590

Angular distributions have been measured in the range E_α = 1.5 to 20.2 MeV: see (1981AJ01). See also (1987EL1B; applied) and (1988CA26; astrophysics).

6. (a) ¹⁰B(⁶Li, t)¹³N Q_m = 5.8413
(b) ¹⁰B(⁹Be, ⁶He)¹³N Q_m = 0.4606

At E(⁶Li) = 18 MeV the known states of ¹³N with 6.3 < E_x < 11.7 MeV are observed, with the exception of ¹³N*(7.9, 8.92). In addition, evidence is presented for a ¹³N state at E_x = 9.00 MeV with Γ_c.m. = 280 ± 30 keV: it is very strongly excited and its angular distribution is similar to that for ¹³C*(9.50) in the mirror reaction (⁶Li, ³He), suggesting that these two states are analogs. Other analog assignments made on the basis of corresponding intensities in the mirror reaction are given in reaction 12 of ¹³C. The widths of ¹³N*(6.89, 7.38) are, respectively, 120 ± 30 and 70 ± 30 keV (1974HO06). For reaction (b) see (1990JAZZ).

7. ¹¹B(³He, n)¹³N Q_m = 10.1826

Neutron groups have been observed to a number of states of ¹³N: see 13.16 (in PDF or PS). The parameters of the first T = 3/2 state at E_x = 15.06 MeV are displayed in 13.6 (in PDF or PS) where they are compared with the corresponding quantities for ¹³C*(15.11): see (1981AJ01).

8. (a) ¹²C(p, γ)¹³N Q_m = 1.9435
(b) ¹²C(p, π⁰)¹³N Q_m = -133.021

Resonances for capture radiation are displayed in 13.17 (in PDF or PS). No resonance is observed at E_p = 1.73 MeV [¹³N*(3.55)]: ωΓ_γ < 0.006 eV. Excitation functions have been measured for E_p = 150 to 2500 keV. In addition to the first two resonances, direct radiative capture is observed. The capture γ-ray yield, studied for E_p = 610 to 2700 keV, is dominated by a direct capture process to ¹³N*(2.36). The cascade decay ¹³N*(3.50 → 2.36) has an intensity of (8 ± 1)%. Extrapolating the cross section to E_c.m. = 25 keV yields a cross section factor S = 1.45 ± 0.20 keV · b: see (1981AJ01). [A reanalysis of the data by (1980BA54) suggests S = 1.54^+0.15_-0.10 kev · b].

Differential cross sections for the transitions to the ground state have been measured for E_{pol. p} = 10 to 17 MeV. The total E2 capture cross section is ≈ 0.2 μb and no resonance effects are observed. The E2 energy-weighted sum rule depleted over this energy range is (8.5 ± 3.3)% (1980HE04). At E_p = 14.2 MeV, capture radiation from the first T = 3/2 state, ¹³N*(15.06) is reported: see 13.6 (in PDF or PS) for the parameters and the decay modes of this state. The angular distributions of the γ-rays determine J = 3/2 for ¹³N*(15.06). The interference between the M1(E2) T = 3/2 resonance (¹³N*(15.06)) and the E1 GDR has been studied by (1980SN01): the E1 capture is found to be predominantly d-wave. See (1981AJ01) for the earlier references.

Excitation functions for γ-rays have also been measured at E_p = 8.7 to 37 MeV (γ₀), 19.9 to 24.4 MeV (γ₁, γ₂₊₃) and 23 to 37 MeV (γ₂₊₃). At E_p = 40 to 100 MeV most of the γ-strength is due to transitions to ¹³N*(3.5), probably to ¹³N*(3.55) [J^π = 5/2⁺] because of its single-particle character. Transitions to higher states may also be indicated. Excitation functions, γ-ray angular distributions and analyzing powers for γ₀, γ₂₊₃ are reported by (1984BL10) for E_p ≈ 25 to 40 MeV. Differential cross sections (γ₀) have also been measured for E_p = 28.35 to 90 MeV (1988HA04) [also angular distribution and A_y at E_{pol. p} = 28.35 MeV]. At E_p = 40 to 80 MeV A_y measurements are reported for the γ₀ and "γ₁" transitions (1986EJ1A, 1986SH1Y; prelim). See also (1989ZU1A).

The photon production cross section has been studied at E_p = 168 and 200 MeV (1989PI02). For other high-energy γ-ray emission results see (1990CLZZ). The π⁰ production cross section to ¹³N_g.s. has been determined for E_p = 154.5 to 204 MeV (1987HO21, 1988SEZT) and at 200 MeV (1989BE25). See also (1988AB05) [E_p = 1 GeV; charged pion production].

See also (1982AN1D, 1984NA1F, 1989IZ1A), (1986AI04, 1988PO1G; applied), (1985AR1A, 1985CA41, 1987RO25, 1987WE1C, 1988CA26, 1989BA2P, 1989GU1J, 1989KA24; astrophysics), (1986BE17, 1986SN1B, 1986WE1D, 1987HE1B, 1989BL1D) and (1986DI1C, 1986MI09, 1986MI1M, 1987RE11, 1990HA46; theor.).

9. (a) ¹²C(p, p)¹²C E_b = 1.9435
(b) ¹²C(p, 2p)¹¹B Q_m = -15.9572
(c) ¹²C(p, pα)⁸Be Q_m = -7.3666

Yields curves for elastic protons, protons inelastically scattered to ¹²C*(4.4, 7.7, 9.6, 12.7, 15.1) and for γ-rays from ¹²C*(4.4, 12.7, 15.1) have been studied at many energies: see 13.18 (in PDF or PS) for a display of the observed structure. Elastic excitation functions have recently been measured at E_p = 0.35 to 0.55 MeV (1986HO26), 1.6 to 1.9 MeV (1986ER06, 1987ER01) and 5.0 to 7.5 MeV (1987RO1F; prelim.). A phase-shift analysis of the elastic scattering analyzing power for E_{pol. p} = 11.5 to 18.1 MeV shows four T = 1/2 states with E_x = 14.06, 16.00, 18.16 and 18.18 MeV, with J^π = 3/2⁺, 7/2⁺, 3/2⁺, 1/2^-: see 13.18 (in PDF or PS). At E_{pol. p} = 19.15 to 23.34 MeV, measurements of the elastic group and the protons to ¹²C*(4.4, 12.7) locate 1/2⁺ (E1), 5/2^- (E2) and 7/2⁺ (E3) resonances below 21 MeV, 3/2⁺ (E1) and 5/2^- resonances with 21 < E_x < 22 MeV and 1/2⁺ and 3/2⁺ resonances above 22 MeV: see 13.18 (in PDF or PS). For other polarization measurements see 13.19 (in PDF or PS). See also (1985BL22, 1989OPZY, 1990CHZY) and (1989SR1C; theor.).

Cross sections for production of 4.4 MeV γ-rays have been determined for E_p = 5.1 to 23 MeV (1981DY03), 8.9, 20, 33, 40 and 50 MeV (1988LE08) and 22 to 85 MeV (1987LA11, 1988SA1B). In the latter work, cross sections have also been measured for the 15.1 MeV γ-ray, and for the 2.1 MeV γ-ray [unresolved; from the decay of the first excited states of ¹¹B/¹¹C reached in the (p, 2p) and (p, pn) reactions]. These measurements are of considerable interest in astrophysics: see, e.g., (1987LA11). The cross sections for the (p, 2p) process (reaction (b)) from the 1p_3/2 orbital and from the continuum have been measured at E_p = 200 MeV by (1989CO17, 1989PI12). See also (1989TEZZ; prelim.). For other breakup processes see (1986AJ01). For high-energy gamma-ray emission see (1990CLZZ). Total and inelastic cross sections have been measured at E_p = 1.52 and 1.8 GeV/c (1984AF1A). For a study of inclusive proton spectra at 150 MeV see (1985SE15). For π⁺ emission see reaction 27 in ¹³C. For an anti-proton study see (1989TA24). For a study at E(¹²C) = 296 to 1572 MeV/A see (1990WE14).

The yield of bremsstrahlung and the shape of the energy spectrum have been studied for E_p = 1.74 to 1.93 MeV by (1986ER06, 1987ER01, 1990ER02). For other bremsstrahlung studies see (1981AJ01, 1986AJ01) and (1987YAZZ, 1988YAZZ).

10. (a) ¹²C(p, n)¹²N Q_m = -18.120 E_b = 1.9435
(b) ¹²C(p, pn)¹¹C Q_m = -18.7215

The cross section for reaction (a) has been measured from threshold to E_p = 50 MeV. Resonant structure is observed corresponding to E_x = 21, 24 and, possibly, ≈ 27 MeV: see (1981AJ01). The cross section at 0° for the transition to ¹²N_g.s. has been measured at E_p = 62, 99 and 120 to 160 MeV (1982AN08), at 120, 160 and 200 MeV (1981RA12) [see ref. 14 in (1989WA15)], at 135 amd 160 MeV (1983WA29), at 144 MeV (1979MO16), at 200, 300 and 400 MeV (1989WA15) and at 492 MeV (1989RA09). Polarization measurements are reported at E_{pol. p} = 160 MeV (1984TA07; D_NN(0°); g.s.), 160 MeV (1987RA15; A_y; g.s.), 290 and 420 MeV (1989HI10; A_y, quasifree), 494 MeV (1988TAZY, 1990TA1J; A_y, quasielastic; prelim.) and at 590 MeV (1989BI06). See also (1989GA1N) and (1986AJ01). For continuum spectra at 200 MeV, see (1988NI1C; prelim.). For neutron yields at E_p = 113, 318 and 800 MeV, see (1986MEZZ, 1986ME1K, 1989ME1D; prelim.). For neutron production cross sections at E_p = 585 MeV, see (1987CI08, 1987FI09). See also reaction 9, and ¹²C in (1990AJ01).

Cross sections for reaction (b) have been measured to 300 GeV: see (1981AJ01). See also ¹²N in (1990AJ01), (1984NA1F, 1986IE1A, 1988LE08), (1985KI1A, 1987TA22, 1988HI1F, 1990QU1B) and (1988BA83; theor.).

11. ¹²C(p, d)¹¹C Q_m = -16.4972 E_b = 1.9435

See (1986AJ01).

12. ¹²C(p, α)⁹B Q_m = -7.552 E_b = 1.9435

Yield curves for α₀ have been measured over the 14.2 MeV resonance, corresponding to the first T = 3/2 state at E_x = 15.06 MeV, and from E_x = 17 to 20 MeV. The yield for the α₁ group has been determined for E_p = 17 to 21.5 MeV. Parameters of observed resonances are displayed in 13.18 (in PDF or PS). Excitation functions for α₀ have also been measured for E_p = 18.5 to 44 MeV at a number of angles: they exhibit structures which are typically 1 MeV broad: see (1981AJ01). For polarization measurements see 13.19 (in PDF or PS) in (1986AJ01). For α and ³He emission at E_p = 72 MeV see (1986WA26).

13. (a) ¹²C(d, n)¹³N Q_m = -0.2811
(b) ¹²C(d, pn)¹²C Q_m = -2.24585

Angular distributions have been measured at E_d = 0.5 to 17 MeV [see (1981AJ01, 1986AJ01)] and at 18 MeV (1987KAZL, 1988KA30: n₀, n₁). Reaction (b) is dominated at E_d = 5.0 to 6.5 MeV and at 9.20 and 9.85 MeV by sequential decay via ¹³N*(3.50 + 3.55). At the lower energies ¹³N*(2.36) participates also: see (1976AJ04). See also ¹⁴N, (1988MAZP), (1986WE1E, 1988VI1A, 1990BA1S; applied) and (1984BL21; theor.).

14. ¹²C(³He, d)¹³N Q_m = -3.5500

Angular distributions have been studied at E(³He) to 81.4 MeV: see (1981AJ01, 1986AJ01). The spectroscopic factors derived by (1980PE13) for ¹³N*(0, 2.36, 3.55, 6.36, 6.89, 7.16, 7.38, 8.0, 8.92, 9.0, 9.48, 10.36, 10.78) are S = 0.48, 0.14, 0.53, 0.007, 0.015, < 0.009, 0.024, 0.13, < 0.005, < 0.005, < 0.002, < 0.001, 0.064, respectively. Evidence is presented for the assignment of J^π = 9/2⁺ to ¹³N*(9.0) (1980PE13). For other values of S, see (1981AJ01). The energies and widths for the first three excited states are E_x = 2368.2 ± 2.8, 3507.8 ± 7.6 and 3549.1 ± 5.0 keV, with Γ_c.m. = 36.1 ± 2.8, 54.8 ± 11.5 and 46.5 ± 7.1 keV respectively: see (1981AJ01). For work at very high energies see (1987AB1J). See also (1986AJ01) and (1984BL21, 1989KA1N; theor.).

15. ¹²C(α, t)¹³N Q_m = -17.8705

See (1981AJ01) and (1989GA1H).

16. ¹²C(⁶Li, ⁵He)¹³N Q_m = -2.65

(1988WO10) [and see reaction 9 in ⁵He (1988AJ01)].

17. (a) ¹²C(⁷Li, ⁶He)¹³N Q_m = -8.031
(b) ¹²C(¹³C, ¹²B)¹³N Q_m = -15.590

Angular distributions have been obtained (reaction (a)) at E(⁷Li) = 36 MeV [see (1981AJ01)] and at 34 MeV (1986CO02; ¹³N*(0, 3.5[u])). S_g.s. = 0.38 ± 0.05 (1986CO02). See also (1988AL1G). For reaction (b) see ¹²B in (1990AJ01).

18. ¹²C(¹²C, ¹¹B)¹³N Q_m = -14.0134

At E(¹²C) = 93.8 MeV angular distributions involving ¹³N*(0, 3.5[u]) have been measured: see (1986AJ01). See also (1987WIZW, 1988HA23).

19. ¹²C(¹³C, ¹²B)¹³N Q_m = -15.590

At E(¹³C) = 390 MeV angular distributions have been studied involving ¹³N*(0, 3.5[u]) and broad states at E_x ≈ 16 and 22 MeV. It is suggested that the latter are the 5/2⁺ and 3/2⁺ components of the giant dipole resonance in ¹³N (1987AD07, 1988VO08). See also the discussion in reaction 26 in ¹²B (1990AJ01) and (1989LE14).

20. ¹²C(¹⁴N, ¹³C)¹³N Q_m = -5.6071

See ¹³C.

21. ¹³C(γ, π^-)¹³N Q_m = -141.789

Angular distributions have been studied at E_γ = 163 MeV (1986SH13) and 223 MeV (1987DU08). (1986SH13) find that the M1 component reproduces the experimental data, suggesting some supression of the E0 component. See also (1986AJ01) and (1990ER03; theor.).

22. ¹³C(π⁺, π⁰)¹³N Q_m = 2.384

The excitation function involving ¹³N_g.s. (the isobaric analog state) has been studied at E_π⁺ = 50 to 343 MeV (1988US01). An angular distribution is reported at E_π⁺ = 165 MeV involving the Δ-resonance (1988KIZW; prelim.). See also (1986AJ01).

23. ¹³C(π⁺, γ)¹³N Q_m = 137.348

Differential cross sections for γ₀ have been measured at E_π⁺ = 115.5 MeV: no evidence is observed for pion condensation (1984MA45).

24. (a) ¹³C(p, n)¹³N Q_m = -3.0028
(b) ¹³C(p, pn)¹²C Q_m = -4.94635

Angular distributions have been measured for E_p = 3.1 to 800 MeV [see (1981AJ01, 1986AJ01)] and at 18.6 MeV (1988KA30; n₀, n₁), and 35 MeV (1986OH03, 1987OR01; n₀, n₁, n₂₊₃) [also comparison with ¹³C(p, p') to mirror states], and at E_{pol. p} = 160 MeV (1987RA15; n₀, n₂₊₃) [¹³N*(11.7, 15.1) are also populated]. Forward-angle cross sections have been measured at E_p = 318 and 800 MeV (1986KI12) and at 492 and 590 MeV (1989RA09). For discussions of the Gamow-Teller strength see (1985WA24, 1986KI12, 1987TA13, 1989RA09). For reaction (b) see (1981AJ01). See also (1986AJ01), ¹⁴N, (1985GU1C, 1987ALZW, 1989WA16), (1986MA1P, 1989AR1G; applied), (1988CA26; astrophysics), (1985GO1Q, 1986CA1N, 1986TA1E, 1986VO1G, 1987BE25, 1987GO1V, 1987LI29, 1987RA32, 1987TA22, 1988RO17, 1988US01, 1989RA1G) and (1986PE1E, 1989AM02, 1989RA15; theor.).

25. ¹³C(³He, t)¹³N Q_m = -2.2391

At E(³He) = 43.6 MeV angular distributions are reported to ¹³N*(0, 2.36, 3.50 + 3.55, 6.36, 6.89, 7.16, 7.38, 9.0, 9.48, 10.36, 10.83, 11.8, 15.07, 16.02). The results are compared with those from the reaction ¹³C(³He, ³He)¹³C to the analog states [see reaction 45 in ¹³C]; they are consistent with J^π = 9/2⁺ for one of the unresolved states at E_x = 9.0 MeV and with 1/2^- and 7/2⁺ for ¹³N*(10.83, 16.02) (1981PE08). An angular distribution has also been determined at E(³He) = 39.6 MeV (1987BUZQ; t₀). Cross sections (0°) involving ¹³N*(0, 3.5) have been measured for E(³He) = 0.6 to 2.3 GeV (1987BE25; see for ratios of the isovector strengths.). For the earlier work see (1981AJ01). See also (1989DE34, 1989JAZY) and (1988RO17).

26. (a) ¹³C(⁶Li, ⁶He)¹³N Q_m = -5.727
(b) ¹³C(⁷Li, ⁷He)¹³N Q_m = -13.42

Angular distributions to ¹³N*(0, 3.50 + 3.55) have been measured at E(⁶Li) = 31.8 MeV: see (1981AJ01). These two reactions have been studied at E(⁶Li) = 93 MeV and E(⁷Li) = 78 MeV by (1984GL06): ¹³N*(0, 3.5, 7.3) are most intensely populated. Angular distributions to ¹³N*(0, 3.5[u]) have also been reported (1989DE34; E(⁶Li) = 93 MeV). See also (1987GOZM; theor.).

27. ¹³O(β⁺)¹³N Q_m = 17.767

See ¹³O and 13.20 (in PDF or PS).

28. ¹⁴N(p, d)¹³N Q_m = -8.3289

Angular distributions have been measured for deuteron groups to ¹³N*(0, 2.36, 3.50 + 3.55, 7.38, 8.92, 11.86) at many energies up to E_p = 155.6 MeV [see (1981AJ01, 1986AJ01)] and at E_p = 18.6 MeV (1987VA28, 1989BE1N; d₀). See also (1989AR1G; applied), (1989GU28; astrophysics) and (1988GUZW; theor.).

29. ¹⁴N(d, t)¹³N Q_m = -4.2962

Angular distributions of the tritons to ¹³N*(0, 3.50, 7.38, 8.92 + (9.00) + 9.48, 11.8) have been obtained at E_d = 52 MeV and analyzed by DWBA. The spectroscopic factors for the ¹³N states [and the mirror states reached in the ¹⁴N(d, ³He)¹³C reaction] are in good agreement with theory and are additional evidence for the J^π assignments of 1/2^-, 3/2^-, 5/2^-, 1/2^-, 3/2^- and 3/2^- to these states: see (1981AJ01). See also (1987GUZZ, 1988GUZW, 1989BE1N).

30. (a) ¹⁴N(³He, α)¹³N Q_m = 10.0243
(b) ¹⁴N(³He, pα)¹²C Q_m = 8.0808

Alpha-particle groups have been observed to the first seven excited states of ¹³N, including two at E_x = 7.166 and 7.388 MeV [± 8 keV]. Angular distributions have been studied at many energies up to E(³He) = 45 MeV [see (1981AJ01)] and at E(³He) = 22.7, 36.9 and 40.0 MeV (1987VA1I, 1989BE1N; α₀). Reaction (b), studied at E(³He) = 8 MeV, appears to involve some states of ¹³N, possibly ¹³N*(7.93, 8.92, 11.87): see (1981AJ01). See also (1988GOZB; theor.).

31. ¹⁴N(⁶Li, ⁷Li)¹³N Q_m = -3.303

An angular distribution has been measured at E(⁶Li) = 32 MeV for the transition to ¹³N_g.s. and ⁷Li*(0, 0.48). ¹³N*(2.36) was also populated: see (1981AJ01).

32. ¹⁴N(¹⁴N, ¹⁵N)¹³N Q_m = 0.2799

See (1988DA12; theor.).

33. ¹⁵N(γ, 2n)¹³N Q_m = -21.3868

See ¹⁵N (1988MC01).

34. ¹⁵N(p, t)¹³N Q_m = -12.9049

At E_p = 43.7 MeV, angular distributions have been obtained for the tritons corresponding to the ground state of ¹³N and the excited states at 3.50 (3/2^-), 6.38 ± 0.03 (5/2⁺), 7.38 (5/2^-), 8.93 ± 0.05 (1/2^-), 10.78 ± 0.06 (1/2^-), 11.88 ± 0.04 (3/2^-) and 15.06 (3/2^-; T = 3/2) MeV [J^π values in parentheses, as determined by DWBA analyses using intermediate-coupling wave functions to obtain the two-nucleon structure factors]. Detailed comparisons have been made with the (p, ³He) reaction to the mirror states in ¹³C: see (1981AJ01) for references and other information.

35. ¹⁶O(p, α)¹³N Q_m = -5.2184

Angular distributions of the α₀, α₁ and α₂ groups have been measured for E_p to 54.1 MeV: see (1970AJ04, 1976AJ04). In addition the distribution of the α-particles to a state with E_x = 12.13 ± 0.06 MeV, Γ_c.m. ≈ 300 keV [J^π = 7/2^-] is reported at 54.1 MeV: see (1981AJ01). For additional work see (1986AJ01). See also (1989WA16), (1989AR1G, 1990BA1S; applied), (1988CA26, 1989GU28; astrophysics) and (1985MAZG; theor.). For the (p, pt) reaction see (1986GO28; theor.).

36. ¹⁷Ne(β⁺)¹⁷F α / → (= α over a right-pointing arrow) ¹³N Q_m = 8.71

See (1988BO39).