Study on the Irradiation Characteristics of Laser-Accelerated Proton Beam on SiC

被引：0

作者：

Zhou D. ^{[1
]}

Li D. ^{[1
]}

Chen Y. ^{[1
]}

Li Y. ^{[1
]}

Yang T. ^{[1
]}

Cheng H. ^{[1
]}

Wu M. ^{[1
]}

Li Y. ^{[1
]}

Yan Y. ^{[1
]}

Xia Y. ^{[1
]}

Lin C. ^{[1
]}

Yan X. ^{[1
]}

Zhao Z. ^{[1
]}

机构：

[1] State Key Lab of Nuclear Physics and Technology, Peking University, Beijing

来源：

Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis | 2022年 / 58卷 / 03期

关键词：

laser-accelerated proton beam; Raman cross-section measurement; short pulse; SiC; wide energy spectrum;

D O I：

10.13209/j.0479-8023.2022.006

中图分类号：

学科分类号：

摘要：

By irradiating the nuclear material SiC, the characteristics of continuous wide energy spectrum, short pulse and high instantaneous current intensity of the laser-accelerated proton beam have been characterized. The SiC samples were placed at a distance of 4 cm from the target. The 300 shots proton beams were irradiated with a continuous wide energy spectrum proton beam of 1– 4.5 MeV, which satisfied the exponential energy spectrum distribution. The surface and cross-section Raman characterizations showed that the intensity of the SiC scattering peaks after irradiation were reduced. The overall trend of Raman cross-section measurement was consistent with the depth of the distribution of energy loss by SRIM simulation. Thus, the experimental characterization of laser-accelerated proton beam with continuous energy distribution was realized. In addition, experiments showed that the short pulse characteristic of the laser-accelerated proton beam could produce a relatively high instantaneous beam current density on the SiC surface. The ultra-fast wide energy spectrum irradiation provides a possibility in simulated reactor neutron irradiation. © 2022 Peking University. All rights reserved.

引用

页码：405 / 411

页数：6

共 16 条

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