Changes in Low Energy Neutron Counts Rate near Ground Level Associated to Steady Rain  

作　　者：Inacio Malmonge Martin Marcelo Pego Gomes Matheus Carlos da Silva Bogos Nubar Sismanoglu 

机构地区：[1]Department of Physics, Aeronautical Institute of Technology, Sao Jose dos Campos 12228-900, Brazil

出　　处：《Journal of Environmental Science and Engineering(A)》2016年第6期294-297,共4页环境科学与工程（A）

摘　　要：Measurements of neutron count rate （0.025 eV to 10 MeV） at ground level were performed with a single free （He-3） tube detectorthat is located near ground level in Aeronautical Institute of Technology （ITA） Silo Jos6 dos Campos, SP, Brazil. The data were collected uninterruptedly since February 28, 2016 to March 11, 2016. Based on the analysis of data obtained in this period, was possible to observe the occurrence of events, backscattering for example,with significant increases in the neutron count rate during about 3 days of steady rain for all nearby regions. These events seem to be correlated with changes in local weather conditions such as cloud coverage or rain-precipitation of weak intensity. It was reported that the non-observation of a single event seems to be an indicative of the production of a burst of neutrons by a lightning discharge near the detector. Some explanations about the increasing of low energy neutrons are suggested in this article.

关 键 词：Neutron counts steady rain backscattered neutron. 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论] O571.55[自动化与计算机技术—计算机科学与技术]