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Observational Studies of Photonuclear Reactions Triggered by Lightning Discharges: Springer Theses

Autor Yuuki Wada
en Limba Engleză Paperback – 10 mar 2022
This book presents the first simultaneous detection of neutrons and positrons after a terrestrial gamma-ray flash (TGF), a highest-energy transient phenomenon on the earth, triggered by a lightning discharge, based on innovative ground-based observations made in the Hokuriku area of Japan. TGFs, known to be produced by lightning discharges since the 1990s, has been theoretically predicted to react with atmospheric nuclei via photonuclear reactions because they comprise high-energy photons of more than 10 MeV, but such photonuclear reactions by lightning discharges, which produce neutrons and unstable isotopes emitting positrons, were not observationally confirmed. The reactions and propagations of their products in the atmosphere are modeled with Monte Carlo simulations to quantitatively evaluate observations of TGFs, neutrons, and positrons at ground level. The successful comparison between observation and simulation is presented, and demonstrates that lightning discharges to trigger photonuclear reactions and to even produce isotopes in the atmosphere.
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Specificații

ISBN-13: 9789811604614
ISBN-10: 9811604614
Ilustrații: XXI, 176 p. 115 illus., 90 illus. in color.
Dimensiuni: 155 x 235 mm
Greutate: 0.29 kg
Ediția:1st ed. 2021
Editura: Springer Nature Singapore
Colecția Springer
Seria Springer Theses

Locul publicării:Singapore, Singapore

Cuprins

Introduction.- Review.- Instrumentation and Observation.- Instrumentation and Observation.- Positrons from Proton-rich Radionuclides.- Positrons from Proton-rich Radionuclides.- Positrons from Proton-rich Radionuclides.- Discussions.- Conclusion.

Notă biografică

Yuuki Wada is a Special Postdoctoral Researcher at RIKEN, in the field of high-energy atmospheric physics.  In March 2020, he received his Ph.D. in Physics from the University of Tokyo, regarding ground-based observations of high-energy particles from winter thunderstorms in Japan. He was also a Visiting Scientist at Laboratoire Astroparticule et Cosmologie, Université Paris-Diderot in 2018.  He is interested in high-energy phenomena in the atmosphere, high-energy astrophysics, and detection techniques of high-energy particles.

Textul de pe ultima copertă

This book presents the first simultaneous detection of neutrons and positrons after a terrestrial gamma-ray flash (TGF), a highest-energy transient phenomenon on the earth, triggered by a lightning discharge, based on innovative ground-based observations made in the Hokuriku area of Japan. TGFs, known to be produced by lightning discharges since the 1990s, has been theoretically predicted to react with atmospheric nuclei via photonuclear reactions because they comprise high-energy photons of more than 10 MeV, but such photonuclear reactions by lightning discharges, which produce neutrons and unstable isotopes emitting positrons, were not observationally confirmed. The reactions and propagations of their products in the atmosphere are modeled with Monte Carlo simulations to quantitatively evaluate observations of TGFs, neutrons, and positrons at ground level. The successful comparison between observation and simulation is presented, and demonstrates that lightning discharges to trigger photonuclear reactions and to even produce isotopes in the atmosphere.

Caracteristici

Nominated as an outsourcing Ph.D. thesis by the University of Tokyo, Japan Confirms the existence of atmospheric photonuclear reactions triggered by lightning discharge Presents a successful simulation model for photonuclear reactions and particle transportation in the atmosphere, that explains the observed data