NEW INFORMATION ON THE EMISSION OF DELAYED PROTONS FOLLOWING THE DECAY OF 17Ne, 21Mg, AND 25Si

Abstract

The spectrum of delayed protons from the decay of ¹⁷Ne has been extended up to 8 MeV; an additional peak corresponding to the decay of a level at (7.99 ± 0.05) MeV in ¹⁷F was found. The delayed-proton spectrum observed following 80-MeV proton bombardment of magnesium and sodium targets, previously attributed solely to the decay of ²¹Mg, has been shown to contain components due to the decay of ¹⁷Ne. The lifetime of ²¹Mg was remeasured to be (121 ± 5) msec. The contribution of other decays was shown to be small compared with that of ²⁵Si in the delayed-proton spectrum observed following bombardment of aluminium and silicon targets at 80 MeV.