DOI: 10.1029/2018JD028337
Scopus记录号: 2-s2.0-85052199545
论文题名: In-Flight Observation of Positron Annihilation by ILDAS
作者: Kochkin P. ; Sarria D. ; Skeie C. ; van Deursen A.P.J. ; de Boer A.I. ; Bardet M. ; Allasia C. ; Flourens F. ; Østgaard N.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 15 起始页码: 8074
结束页码: 8090
语种: 英语
英文关键词: annihilation
; gamma ray glow
; lightning
; positron
; X-rays
英文摘要: We report a 511-keV photon flux enhancement that was observed inside a thundercloud and is a result of positron annihilation. The observation was made with the In-flight Lightning Damage Assessment System (ILDAS) on board of an A340 test aircraft. The aircraft was intentionally flying through a thunderstorm at 12-km altitude over Northern Australia in January 2016. Two gamma ray detectors showed a significant count rate increase synchronously with fast electromagnetic field variations registered by an on-board antenna. A sequence of 10 gamma ray enhancements was detected, each lasted for about 1 s. Their spectrum mainly consists of 511-keV photons and their Compton component. The local electric activity during the emission was identified as a series of static discharges of the aircraft. A full-scale Geant4 model of the aircraft was created to estimate the emission area. Monte Carlo simulation indicated that the positrons annihilated in direct vicinity or in the aircraft body. ©2018. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113258
Appears in Collections: 气候减缓与适应
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作者单位: BCSS, University of Bergen, Bergen, Norway; Electrical Engineering Department, Eindhoven University of Technology, Eindhoven, Netherlands; The Netherlands Aerospace Centre, Amsterdam, Netherlands; Airbus, Toulouse, France
Recommended Citation:
Kochkin P.,Sarria D.,Skeie C.,et al. In-Flight Observation of Positron Annihilation by ILDAS[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(15)