标题： 中微子通量对α衰变放射性半衰期的影响证据 显示英文标题

标题： Evidence of Neutrino Flux effect on Alpha Emission Radioactive Half-Life

摘要： 放射性源在多次精确测量中表现出年度周期性的半衰期变化，尽管常规做法认为放射性衰变对于每种放射性核素应为物理常数。 此外，普渡大学对Mn-54衰变率的测量显示，在2006年对太阳X射线耀斑事件有响应。 Mn-54源从原子核中发射中微子，因此可以解释这些太阳中微子可以与该辐射源相互作用。 为了追踪更多辐射计数率对太阳耀斑事件的响应，我们建立了一个实验探测系统用于伽马辐射计数率的测量，面对Am-241源。 该系统放置在一个地下实验室中，永久锁定以避免任何意外辐射扰动的影响，并通过温度和洁净空气流进行环境控制，以保持探测器的稳定。 探测器由NaI(Tl)闪烁体用于伽马辐射和全计数读取设备用于远程计数。 每个辐射计数系统都用5厘米的铅屏蔽。 在太阳耀斑事件发生前一个月，所有三个探测器显示出合理稳定的计数率，每15分钟记录一次。 2018年10月12日至13日，SpaceWeatherLive网站报告了五次太阳耀斑。 Am-241系统对太阳耀斑的响应发现延迟约为20天。 我们得出结论，对于α粒子发射体放射性源，半衰期也由于来自太阳的中微子通量变化而改变。 我们的测量表明，α粒子发射体受到来自太阳的中微子通量变化的影响。 显示英文摘要

摘要： Radioactive sources presented annual periodical half-life changes in several accurate measurements, although customary practice claims that radioactive decay should be a physical constant for each radionuclide. Besides that, the Purdue measurements of Mn-54 decay-rates indicated response to solar X-ray flare events in 2006. The Mn-54 source emits neutrino from the nucleus and therefore allows interpreting those solar neutrinos can interact with this radiation source. In order to track more radiation count-rate responses to solar flare events, we built an experimental detector system for gamma radiation count-rates measurements, facing an Am-241 source. The system was placed at an underground laboratory, permanently locked to avoid any influence by unexpected radiation perturbations, and environmentally controlled in means of temperature and clean-air flow, in order to maintain detector stabilization. The detector consist of NaI(Tl) scintillators for gamma radiation and total-counting reader devices for remote counting. Each radiation counting system was shielded by a 5 cm lead. One month prior to flare events from the Sun, all three detectors showed reasonably stable count-rates, which were tallied every 15 minutes. Five solar-flares occurred and reported by the SpaceWeatherLive website on 12th to 13th of October 2018. The Am-241 system response to solar flares found to be with a delay of around 20 days. We conclude that also for alpha emitter radioactive sources, the half-life altered due to changes of neutrino flux from the Sun. Our measurements indicated that an alpha emitter was affected by the neutrino flux change from the Sun.