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GENERAL: See (LE66E, DI67A).

Mass of ¹⁶F: From the Q-value of the ¹⁴N(³He, n)¹⁶F reaction [Q₀ = -969 ± 14 keV (ZA65, AD68B)] and the (MA65A) masses for ¹⁴N, ³He and n, the mass excess of ¹⁶F is 10.693 ± 0.014 MeV. ¹⁶F is then unstable with respect to proton emission by 0.544 MeV. The binding energies of a deuteron, a ³He particle and an α-particle in ¹⁶F are, respectively, 10.451, 9.584 and 9.074 MeV. (KE66C) predict M - A = 11.204 from the isobaric multiplet mass equation [the difference between this value and the experimentally observed mass excess is due to a Thomas-Ehrman shift of the unbound ¹⁶F ground state]. See also the general discussion in (GA69O) and (GA64A, GA66C).

1. 14N(3He, n)16F	Qm = -0.969
	Q0 = -0.970 ± 0.015 (AD68B);
	Q0 = -0.963 ± 0.040 (ZA65).

Observed neutron groups are displayed in Table 16.33 (in PDF or PS) (ZA65, AD68B). Angular distributions of the neutrons corresponding to ¹⁶F*(0, 0.43, 0.72) have been measured at E(³He) = 3.5 MeV. The widths of the first four states of ¹⁶F (see Table 16.33 (in PDF or PS)) [and comparison with the analog states in ¹⁶N, ¹⁶O] suggest that J^π for ¹⁶F*(0, 0.24, 0.43, 0.71) are (0^-, 2^-, 1^- and 3^-, respectively) [see, however, reaction 3] (ZA65). See also (BO60A, BR64H).

2. 16O(p, n)16F	Qm = -16.212
	Q0 = -16.4 ± 0.2 (GR65N).

At E_p = 30 and 50 MeV, neutron groups are reported to eight excited states of ¹⁶F with E_x < / ~ 19.5 MeV, including two states at E_x = 4.20 ± 0.05 and 6.16 ± 0.05 MeV (GR65N). See also (WI70).

3. 16O(3He, t)16F

Qm = -15.448

Triton groups observed at E(³He) = 40.2 MeV are displayed in Table 16.33 (in PDF or PS). The angular distributions of the tritons to ¹⁶F*(0, 0.24) are similar, as are those of the tritons to ¹⁶F*(0.43, 0.71): comparison with analog states in ¹⁶N, ¹⁶O then suggests J^π = 0^-, 1^-, 2^- and 3^-, respectively, for these states (PE65). See also (TO66B; theor.) and (RI65B, HA67T).