Precise energy of the weak 32-keV gamma transition observed in ^83mKr decay

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• 作者：D. Vé ; nos ; O. Dragoun ; A. &#x160 ; palek and M. Vobecký
• 关键词：Transition energy ; Gamma spectrum ; Conversion electron ; Si(Li) detector ; Krypton-83m ; Neutrino mass
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2006
• 出版时间：10 May 2006
• 年：2006
• 卷：560
• 期：2
• 页码：352-359
• 全文大小：247 K

文摘

The energy of the weak isomeric 32 keV γ-transition in the ^83mKr decay was established to be 32151.7(5) eV. It has an intensity of only 0.055 % per decay. This energy value was obtained from gamma spectrometry measurements of differences in the energies of closely spaced lines. This result allows one to determine more precisely the energy of the K conversion electron of this 32 keV transition, thus representing a unique tool for the energy calibration of the tritium beta spectrum that is measured in the KATRIN neutrino mass determination experiment.