Effect of solar flares on 54Mn and 57Co radioactive decay constants performance

IF 0.9 4区 工程技术 Q3 NUCLEAR SCIENCE & TECHNOLOGY Nuclear Technology & Radiation Protection Pub Date : 2021-01-01 DOI:10.2298/ntrp2103219w
Jonathan Walg, Yael Peleg, Anatoly Rodnianski, N. Hazenshprung, I. Orion
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引用次数: 1

Abstract

Changes in radioactive decay rates due to solar flares have attracted increasing scientific attention in recent decades. In previous studies we demonstrated that solar flares cause changes in the decay rate of 241Am, 222Rn, and 232Th. The change in the count rate of 54Mn due to solar flares, as observed by scholars at Purdue University in 2006, encouraged us to repeat the measurements. In addition, we measured gamma radiation count rates of 57Co that undergoes electron capture, as in 54Mn decay. Our new measurements indicate that there is a delay of about five days between the solar flare occurrence and the decrease in 54Mn count rates. Also, we conclude that in the 54Mn study of 2006 there was a delay between the solar flares and the resulting count rate dips. With regard to the 57Co counting system, we measured about a seven-day delay between the occurrence of solar flares and the count rate dips. We conclude that 54Mn and 57Co interact with neutrinos that originate during solar flares.
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太阳耀斑对54Mn和57Co放射性衰变常数性能的影响
近几十年来,太阳耀斑引起的放射性衰变率的变化引起了越来越多的科学关注。在以前的研究中,我们证明了太阳耀斑引起241Am, 222Rn和232Th的衰变速率变化。普渡大学的学者在2006年观察到太阳耀斑导致的54Mn计数率的变化,鼓励我们重复测量。此外,我们测量了57Co经历电子捕获的伽马辐射计数率,就像54Mn衰变一样。我们的新测量表明,在太阳耀斑发生和54Mn计数率下降之间有大约5天的延迟。此外,我们得出结论,在2006年的54Mn研究中,太阳耀斑和由此产生的计数率下降之间存在延迟。关于57Co计数系统,我们在太阳耀斑发生和计数率下降之间测量了大约7天的延迟。我们的结论是54Mn和57Co与太阳耀斑期间产生的中微子相互作用。
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来源期刊
Nuclear Technology & Radiation Protection
Nuclear Technology & Radiation Protection NUCLEAR SCIENCE & TECHNOLOGY-
CiteScore
2.00
自引率
41.70%
发文量
10
审稿时长
6-12 weeks
期刊介绍: Nuclear Technology & Radiation Protection is an international scientific journal covering the wide range of disciplines involved in nuclear science and technology as well as in the field of radiation protection. The journal is open for scientific papers, short papers, review articles, and technical papers dealing with nuclear power, research reactors, accelerators, nuclear materials, waste management, radiation measurements, and environmental problems. However, basic reactor physics and design, particle and radiation transport theory, and development of numerical methods and codes will also be important aspects of the editorial policy.
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