气候变化领域集成服务门户(CCPortal): Photonuclear Reactions in Lightning: 1. Verification and Modeling of Reaction and Propagation Processes

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DOI	10.1029/2020JD033193
	Photonuclear Reactions in Lightning: 1. Verification and Modeling of Reaction and Propagation Processes
	Wada Y.; Enoto T.; Nakazawa K.; Odaka H.; Furuta Y.; Tsuchiya H.
发表日期	2020
ISSN	2169897X
卷号	125 期号:20
英文摘要	We report simulation results of photonuclear reactions in the atmosphere triggered by a downward terrestrial gamma ray flash in lightning. Possible channels of reactions in the atmosphere and their cross-sections are verified with the ENDF/B-VII.1 library. Monte Carlo simulations with two stages are then performed with the Geant4 framework. In the first stage, electrons following the relativistic runaway electron avalanche spectrum are produced in a mass model of the atmosphere, and production of photoneutrons and β+-decay nuclei is calculated based on the nuclear data library. In total 1 × 1013 neutrons and 4 × 1012 β+-decay nuclei are produced by 1018 energetic electrons above 1 MeV. In the second stage, propagation of the photoneutrons and positrons from the β+-decay nuclei in the previous stage is calculated. As a result, we model on-ground distributions of fluxes and energy spectra for neutrons, neutron-related gamma rays, and annihilation ones. The simulation model is to be compared with photonuclear events detected in low-charge-center winter thunderstorms. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	high-energy atmospheric physics; lightning; photonuclear reaction; terrestrial gamma ray flash; thunderstorm
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185706
作者单位	Extreme Natural Phenomena RIKEN Hakubi Research Team, Cluster for Pioneering Research, RIKEN, Saitama, Japan; Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Aichi, Japan; Department of Physics, Graduate School of Science, The University of Tokyo, Tokyo, Japan; Research Center for Early Universe, The University of Tokyo, Tokyo, Japan; Collaborative Laboratories for Advanced Decommissioning Science, Japan Atomic Energy Agency, Fukushima, Japan; Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Ibaraki, Japan
推荐引用方式 GB/T 7714	Wada Y.,Enoto T.,Nakazawa K.,et al. Photonuclear Reactions in Lightning: 1. Verification and Modeling of Reaction and Propagation Processes[J],2020,125(20).
APA	Wada Y.,Enoto T.,Nakazawa K.,Odaka H.,Furuta Y.,&Tsuchiya H..(2020).Photonuclear Reactions in Lightning: 1. Verification and Modeling of Reaction and Propagation Processes.Journal of Geophysical Research: Atmospheres,125(20).
MLA	Wada Y.,et al."Photonuclear Reactions in Lightning: 1. Verification and Modeling of Reaction and Propagation Processes".Journal of Geophysical Research: Atmospheres 125.20(2020).