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The Q-value of the ⁴⁸Ca(¹⁸O, ⁵¹V)¹⁵B reaction is -21.768 ± 0.025 MeV, leading to an atomic mass excess of 28969.5 ± 25 keV for ¹⁵B (HO83C) based on the masses of ¹⁸O, ⁴⁸Ca and ⁵¹V in (WA85C). Wapstra adopts 28970 ± 22 keV and we shall also. ¹⁵B is then stable with respect to ¹⁴B + n by 2.765 MeV. At E(¹⁸O) = 108 MeV, dσ/dΩ = 2.0 μb/sr at 5° (HO83C). The β^- decay of ¹⁵B has been reported: τ_1/2 = 11 ± 1 msec. Upper limits have been set on the P_0n and P_2n: 5% and 1.5%, respectively (DU84F). See also (81AJ01) for the earlier work, (HI84, MU84E), (AL80H) and (SE81C, AN83D; theor.).