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Searching for the β + EC and EC/EC Decays of 74 Se
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2020-09-18 , DOI: 10.3103/s1062873820080250
N. I. Rukhadze , A. S. Barabash , V. B. Brudanin , A. A. Klimenko , S. I. Konovalov , A. V. Rakhimov , E. N. Rukhadze , Yu. A. Shitov , I. Stekl , V. I. Umatov , G. Warot

Abstract

Double beta decay (β+EC, EC/EC) of 74Se was investigated at the Modane underground laboratory (LSM, France; 4800 m of water equivalent) using the OBELIX ultralow-background HPGe detector with a sensitive volume of 600 cm3 and a sample of natural selenium with a mass of 1.6 kg containing ~0.89% (~14.24 g) of 74Se. The new experimental limits for β+EC and EC/EC decays of 74Se to ground 0+ and excited \(2_{1}^{ + },\) 596 keV, and \(2_{2}^{ + },\) 1204 keV states of 74Ge, were obtained from experimental data accumulated over 135 days.



中文翻译:

寻找74 Se的β+ EC和EC / EC衰变

摘要

双β衰变(β + EC,EC / EC)的74硒在所述Modane地下实验室研究;使用所述的Obelix超低背景HPGe探测器具有600厘米的敏感体积(LSM,法国当量水4800米)3和重量为1.6千克的天然硒样品,含〜0.89%(〜14.24 g)的74 Se。β + EC和EC / EC衰减74 Se到地面0 +并激发\(2_ {1} ^ {+},\) 596 keV和\(2_ {2} ^ {+}的新实验极限, \)的1204千点电子伏的状态74的Ge,从累积135天实验数据获得的。

更新日期:2020-09-20
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