RESULTS OF AN EXPERIMENT ON SEARCH FOR 2-BETA-DECAY OF XE-136 IN PROPORTIONAL DRIFT DETECTOR

被引：0
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作者：
ARTEMEV, VA
BRAKHMAN, EV
ZELDOVICH, OY
IVANOVSKII, MA
KARELIN, AK
KIRICHENKO, VV
KNYAZEV, VM
KOZODAEVA, OM
LYUBIMOV, VA
MITIN, AI
NIKOLAEV, VP
TSVETKOVA, TN
机构：
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INSTRUMENTS AND EXPERIMENTAL TECHNIQUES | 1992年 / 35卷 / 02期
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T [工业技术];
学科分类号：
08 ;
摘要：
Background processes were studied in a proportional drift detector with a volume of 300 liters intended for the search for 2beta-decay of Xe-136. A technique is developed for the selection of background events associated with U-238-series isotopes entering the detector from the gas purification system because of diffusion of Rn-222. The technique allows the registration of Rn-222 impurities with a relative concentration of 10(-20)-10(-21) in working gas. For an exposure of 418 h, the lower limit of the half-life time is found (T1/2(2beta2nu) > 9.3 . 10(19) yr) with a confidence level of 90%.
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页码：226 / 230
页数：5
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