Gamma-rays from proton capture in 26Mg

Abstract

Gamma-rays produced by the resonance capture of 454 key protons in natural magnesium have been investigated with a scintillation spectrometer• This resonance has been assigned to the reaction 26Mg(p, V) 27A1 by T a n g e n 1), as the final nucleus emits no positrons. The resonant energy has been determined most accurately by Hunt and Jones2) as 454.2 4- 0.3 key. Natural magnesium exhibits many resonances 1)2) in the low energy region, of which the 454 key resonance is the most prominent one. Gamma-rays of energy EV = 4.9 and 6.2 Mev have been found from this resonance by Russell et al. 3) with an aluminum absorption method. The only scintillation spectrometer investigation of this reaction has been made by Casson 4)at the 338 and 314 kev resonances. At E# = 338key 7-rays of Ey = 2.83 i 0.14 and 5.80 4- 0.25 Mev and at 314 kev a 7-ray of E7 = 4.2 4- 0.2 Mev are observed.