Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2020, Vol. 31 ›› Issue (6): 62 doi: 10.1007/s41365-020-00769-8


Primary yields of protons measured using CR-39 in laser-induced deuteron-deuteron fusion reactions

Yue Zhang 1, 2 Long-Xiang Liu,3, 1 Hong-Wei Wang 1, 2, 3, Yu-Gang Ma 1, 2, 4 Bai-Fei Shen,5, 6, 7 Guo-Qiang Zhang 3, 1 Mei-Rong Huang,8 Aldo. Bonasera,9, 10 Wen-Peng Wang 5, 7 Jian-Cai Xu,5, 7 Shun Li,5, 7 Gong-Tao Fan,3, 1 Xi-Guang Cao,3, 1 Yong Yu,5 Jian-Jun He,11 Chang-Bo Fu 4 Suyalatu. Zhang 8 Xin-Rong Hu,1, 2 Xin-Xiang Li,1, 2 Zi-Rui Hao,1, 2 Jun-Wen Wang,1, 12 Han Xue,1 and Hai-Juan Fu1, 13   

  1. 1Shanghai Institute of Applied Physics, CAS, Shanghai 201800, China
    2University of Chinese Academy of Sciences, Beijing 100049, China
    3Shanghai Advanced Research Institute, CAS, Shanghai 201210, China
    4Key Laboratory of Nuclear Physics and Ion-Beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China
    5State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, CAS, Shanghai 201800, China
    6Department of Physics, Shanghai Normal University, Shanghai 200234, China
    7CAS Center for Excellence in Ultra-intense Laser Science, Shanghai 201800, China
    8College of Physics and Electronics Information, Inner Mongolia University for Nationalities, Tongliao, 028000, China
    9Cyclotron Institute, Texas A&M University, College Station, TX 77843, USA
    10Laboratori Nazionali del Sud, INFN, via Santa Sofia, 62, 95123 Catania, Italy
    11Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
    12ShanghaiTech University, Shanghai 201210, China
    13Shanghai University, Shanghai 200444, China
  • Received:2020-03-07 Revised:2020-04-02 Accepted:2020-04-07
  • Contact: Hong-Wei Wang
  • Supported by:
    This work was supported in part by the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDB160203) and the National Natural Science Foundation of China (Nos. 11875311,11421505).
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Yue Zhang, Long-Xiang Liu, Hong-Wei Wang, Yu-Gang Ma, Bai-Fei Shen, Guo-Qiang Zhang, Mei-Rong Huang, Aldo. Bonasera, Wen-Peng Wang, Jian-Cai Xu, Shun Li, Gong-Tao Fan, Xi-Guang Cao, Yong Yu, Jian-Jun He, Chang-Bo Fu, Suyalatu Zhang, Xin-Rong Hu, Xin-Xiang Li, Zi-Rui Hao, Jun-Wen Wang, Han Xue, Hai-Juan Fu. Primary yields of protons measured using CR-39 in laser-induced deuteron-deuteron fusion reactions.Nuclear Science and Techniques, 2020, 31(6): 62     doi: 10.1007/s41365-020-00769-8

Abstract: Investigating deuteron-deuteron (DD) fusion reactions in a plasma environment similar to the early stages of the Big Bang is an important topic in nuclear astrophysics. In this study, we experimentally investigated such reactions, using eight laser beams with the third harmonic impacting on a deuterated polyethylene target at the ShenGuang-II Upgrade laser facility. This work focused on the application of range-filter (RF) spectrometers, assembled from a 70 m aluminum filter and two CR-39 nuclear track detectors, to measure the yields of primary DD-protons. Based on the track diameter calibration results of 3 MeV protons used to diagnose the tracks on the RF spectrometers, an approximate primary DD-proton yield of (8:5  1:7)  106 was obtained, consistent with the yields from similar laser facilities worldwide. This indicates that the RF spectrometer is an effective way to measure primary DD-protons. However, due to the low yields of D3He-protons and its small track diameter, CR-39 detectors were unable to distinguish it from the background spots. Using other accurate detectors may help to measure these rare events.

Key words: DD fusion, CR-39, Range-filter spectrometer, DD proton