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초강력레이저과학연구단
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Spatial and spectral measurement of laser-driven protons through radioactivation

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Title
Spatial and spectral measurement of laser-driven protons through radioactivation
Author(s)
Yin‑Ren Shou; Xue‑Zhi Wu; Gwang‑Eun Ahn; Seung Yeon Kim; Seong Hoon Kim; Hwang Woon Lee; Jin Woo Yoon; Jae Hee Sung; Seong Ku Lee; Xue‑Qing Yan; Il Woo Choi; Chang Hee Nam
Publication Date
2023-12
Journal
Nuclear Science and Techniques, v.34, no.12
Publisher
Springer Science and Business Media LLC
Abstract
The simultaneous measurement of the spatial profle and spectrum of laser-accelerated protons is important for further optimization of the beam qualities and applications. We report a detailed study regarding the underlying physics and regular procedure of such a measurement through the radioactivation of a stack composed of aluminum, copper, and CR-39 plates as well as radiochromic flms (RCFs). After being radioactivated, the copper plates are placed on imaging plates (IPs) to detect the positrons emitted by the reaction products through contact imaging. The spectrum and energy-dependent spatial profle of the protons are then obtained from the IPs and confrmed by the measured ones from the RCFs and CR-39 plates. We also discuss the detection range, infuence of electrons, radiation safety, and spatial resolution of this measurement. Finally, insights regarding the extension of the current method to online measurements and dynamic proton imaging are also provided.
URI
https://pr.ibs.re.kr/handle/8788114/14294
DOI
10.1007/s41365-023-01324-x
ISSN
1001-8042
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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