Thermal-neutron capture gamma rays from natural magnesium and enriched 25Mg

Abstract

Gamma rays from neutron capture in natural magnesium and in enriched 25Mg have been studied with Ge(Li) detectors. Altogether 101 γ-rays have been observed. Most of these γ-rays could be fitted into the level schemes of 25Mg, 26Mg and 27Mg.

If it is assumed that the capture cross section for natural magnesium amounts to 64±3 mb, the capture cross sections for 24Mg, 25Mg and 26Mg have been determined as 52±13 mb, 182±50 mb and 34±10 mb, respectively.