On the of choice γ-ray sources for compton profile studies

Abstract

A careful study is made of the different factors governing the choice of a γ-ray source, and other experimental parameters (scattering angle, collimation) when performing a Compton scattering experiment using a solid state detector. As is known, the poorer penetration of lower energy γ-rays leads to a lower count rate. It is found that an optimum choice of scattering angle and collimation can, in many cases, substantially offset this effect. A detailed comparison of the two sources most commonly used, viz. ²⁴¹Am and ^123mTe, is made. It is shown in contrast to what has been previously reported in literature, that ²⁴¹Am can be quite a worthwhile choice. Some errors in previous findings are also pointed out.