A single shot gamma-induced positron spectroscopy based on laser wakefield accelerator

Single shot gamma-induced positron annihilation spectroscopy (GiPS) based on a laser wakefield accelerator is proposed. In this spectroscopy, a large number of gamma rays generated by laser-wakefield accelerated electrons are injected into a sample in a very short time (<2 ps), and the positron l...

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Autores principales:	Yonghong Yan, Minghai Yu, Shaoyi Wang, Fang Tan, Yue Yang, Xiaohui Zhang, Yuchi Wu, Jingqin Su, Weimin Zhou, Yuqiu Gu
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/3c5043bdcd8b4f2b972394f83435671b
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spelling	oai:doaj.org-article:3c5043bdcd8b4f2b972394f83435671b2021-12-01T18:52:06ZA single shot gamma-induced positron spectroscopy based on laser wakefield accelerator2158-322610.1063/5.0063806https://doaj.org/article/3c5043bdcd8b4f2b972394f83435671b2021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0063806https://doaj.org/toc/2158-3226Single shot gamma-induced positron annihilation spectroscopy (GiPS) based on a laser wakefield accelerator is proposed. In this spectroscopy, a large number of gamma rays generated by laser-wakefield accelerated electrons are injected into a sample in a very short time (<2 ps), and the positron lifetime is detected by measuring the time profile of the annihilation radiation (511 keV gamma ray) from the sample. The processes including gamma-ray production, shielding, annihilation generation, and annihilation detection were simulated by using the Monte Carlo method. The results show that up to 1010 gamma rays with a duration of 1.4 ps can be produced per shot with a 45 TW laser system. A Cherenkov radiator PbF2 was used to detect the annihilation radiation, and its optimal thickness of 15 mm was obtained. A whole process simulation with optimized parameters was conducted. A low statistical fluctuation lifetime spectrum can be produced, which confirms the feasibility of single shot GiPS with a typical 45 TW laser system.Yonghong YanMinghai YuShaoyi WangFang TanYue YangXiaohui ZhangYuchi WuJingqin SuWeimin ZhouYuqiu GuAIP Publishing LLCarticlePhysicsQC1-999ENAIP Advances, Vol 11, Iss 11, Pp 115021-115021-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Yonghong Yan Minghai Yu Shaoyi Wang Fang Tan Yue Yang Xiaohui Zhang Yuchi Wu Jingqin Su Weimin Zhou Yuqiu Gu A single shot gamma-induced positron spectroscopy based on laser wakefield accelerator
description	Single shot gamma-induced positron annihilation spectroscopy (GiPS) based on a laser wakefield accelerator is proposed. In this spectroscopy, a large number of gamma rays generated by laser-wakefield accelerated electrons are injected into a sample in a very short time (<2 ps), and the positron lifetime is detected by measuring the time profile of the annihilation radiation (511 keV gamma ray) from the sample. The processes including gamma-ray production, shielding, annihilation generation, and annihilation detection were simulated by using the Monte Carlo method. The results show that up to 1010 gamma rays with a duration of 1.4 ps can be produced per shot with a 45 TW laser system. A Cherenkov radiator PbF2 was used to detect the annihilation radiation, and its optimal thickness of 15 mm was obtained. A whole process simulation with optimized parameters was conducted. A low statistical fluctuation lifetime spectrum can be produced, which confirms the feasibility of single shot GiPS with a typical 45 TW laser system.
format	article
author	Yonghong Yan Minghai Yu Shaoyi Wang Fang Tan Yue Yang Xiaohui Zhang Yuchi Wu Jingqin Su Weimin Zhou Yuqiu Gu
author_facet	Yonghong Yan Minghai Yu Shaoyi Wang Fang Tan Yue Yang Xiaohui Zhang Yuchi Wu Jingqin Su Weimin Zhou Yuqiu Gu
author_sort	Yonghong Yan
title	A single shot gamma-induced positron spectroscopy based on laser wakefield accelerator
title_short	A single shot gamma-induced positron spectroscopy based on laser wakefield accelerator
title_full	A single shot gamma-induced positron spectroscopy based on laser wakefield accelerator
title_fullStr	A single shot gamma-induced positron spectroscopy based on laser wakefield accelerator
title_full_unstemmed	A single shot gamma-induced positron spectroscopy based on laser wakefield accelerator
title_sort	single shot gamma-induced positron spectroscopy based on laser wakefield accelerator
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/3c5043bdcd8b4f2b972394f83435671b
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A single shot gamma-induced positron spectroscopy based on laser wakefield accelerator

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