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Effects of the $γ-$rays Scattered Backward by Metals on the Nuclear Energy Level Width

Il-Tong Cheon·Moon Taeg Jeong
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Abstract

By placing a ${}^{133}Cs$ $γ$-ray source embedded in a solid at the center of a platinum (gold) cylinder, we try to change the width of the 81-keV level. Our results show a narrowed energy level and, equivalently, a prolonged lifetime. With a 0.5-mm-thick, 5-cm-long, 2-mm-diameter platinum cylinder, we obtain a width narrower by $6.1 % $ at $4.2 \: K$.

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Il-Tong Cheon, Moon Taeg Jeong. 2006-06-13. Effects of the $γ-$rays Scattered Backward by Metals on the Nuclear Energy Level Width. https://arxiv.org/abs/nucl-th/0606018

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