High-energy-density physics based on HIAF

Zhao, Yongtao; Zhang, ZiMin; Cheng, Rui; Hoffmann, D. H. H.; Ma, Binze; Wang, You‐Nian; Wang, Yuyu; Wang, Xing; Deng, Zhigang; Ren, Junkai; Liu, Wei; Qi, Weizhi; Qi, Xin; Su, Yanan; Du, Yingchao; Li, Fu‐Li; Li, Jinyu; Yang, Jie; Yang, Jiancheng; Yang, Lei; Xiao, Guoqing; Wu, Dong; He, Bin; Song, Yuan-Hong; Zhang, Xiaoan; Zhang, Shizheng; Zhang, Lin; Zhang, Ya; Zhang, Yanning; Chen, Benzheng; Chen, Yanhong; Zhou, Zheng; Xia, Zhou; Zhou, Weimin; Hongwei, Zhao; Zhao, Quantang; Zhao, Zongqing; Zhao, Xiqian; Hu, Zhang-Hu; Wan, Feng; Li, Jianxing; Xu, Zhen; Gao, Fei; Tang, Chuanxiang; Huang, Wenhui; Cao, Sheng; Cao, Leifeng; Sheng, Lina; Kang, Wei; Lei, Yu; Wenlong, Zhan

doi:10.1360/sspma-2020-0275

Sci. Sin.-Phys. Mech. Astron.

2020

DOI: 10.1360/sspma-2020-0275

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High-energy-density physics based on HIAF

Yongtao Zhao

ZiMin Zhang

Rui Cheng

et al.

Abstract: high-energy-density physics, High Intensity heavy-ion Accelerator Facility, ion beam and plasma interaction, wakefield modulation, high energy electron radiography

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Cited by 2 publications

References 23 publications

(23 reference statements)

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Confinement of intense proton beams by an applied axial magnetic field in large-scale plasma

Chen

Ren

et al. 2022

Physics of Plasmas

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Stable and efficient transport of particle beams through plasma is a frequent topic in particle–matter interactions. In plasma, intense ion beams can focus and flap because of the self-generated electromagnetic fields and soon diverge if no restrictions are imposed. In this study, the transport of a slab beam in large-scale plasma with a uniform applied axial magnetic field is simulated and analyzed using a newly developed kinetic particle-in-cell code. The simulation results show that the applied axial magnetic field intensifies the Lorentz force acting on the beams and is effective at preventing ion-beam divergence. This confinement effect from the external magnetic field influences the beam flapping more than it does the focusing, and with increasing applied magnetic field, more beam particles converge and more energy is transferred into the transverse direction in the flapping region. In the present scenario, the beam behavior is affected synthetically by both the self-generated electromagnetic field and the external axial magnetic field. Also shown is that the applied field exerts little control over the total beam energy, which the present theoretical analysis explains well. Beam confinement by an external magnetic field is likely to have a major impact on nuclear fusion, astrophysics, and beam control.

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Confinement of intense proton beams by an applied axial magnetic field in large-scale plasma

Chen

Ren

et al. 2022

Physics of Plasmas

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Internal structural changes in crystals induced by GeV heavy ion beam irradiation of LiF

Chen,

Shi,

Wang

et al. 2024

Acta Phys. Sin.

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When high-energy heavy ions beam is incident into solid material, the energy deposition density along the ions flight path can change the macroscopic target temperature and pressure, and may create new material defects under such high-pressure and high-density conditions. To accurately control the extreme state in material generated by heavy ions beam, it is necessary to conduct detailed research on the energy deposition density of ions and figure out the new potential defects in matter. This paper reports the new experiment at the HIRFL-CSR at Lanzhou, where 264 MeV/u Xe36+ions beams are extracted to irradiate a LiF crystal target. The emission spectrum of the LiF was measured in-situ. Moreover, the changes in crystal color along ions path are observed (shown as Fig.1), and XRD (X-ray Diffraction) as well as XPS(X-ray photoelectron spectroscopy) are applied to predict the potential new phases at different positions of crystal through the target dissociation method. It is apparent that in No.3- front(the red line）a new phase around 52.6 degree is found in XRD result, which is believed as LiF3 (LiF+F2) structural phase and appear in the Bragg peak region of Xe ions in LiF. Furthermore, to verify this result, a similar experiment was done by using 430MeV/u 84Kr26+ions beam, and the stacked layered LiF target was analyzed after the irradiation. XPS result shows more complex defects aggregates in the Bragg peak region of Kr ions in LiF at room temperature. In previous study, such complex defects all generated under high temperature conditions. We figure out that these complex defects can be produced around the Bragg peak region of ions in LiF at room temperature, where a temporally high temperature and high pressure condition could be generated. This paper can provide some experimental evidences and references for the target material modification in high-energy density physics research driven by heavy ions beam.

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High-energy-density physics based on HIAF

Abstract: high-energy-density physics, High Intensity heavy-ion Accelerator Facility, ion beam and plasma interaction, wakefield modulation, high energy electron radiography

Cited by 2 publications

References 23 publications

Confinement of intense proton beams by an applied axial magnetic field in large-scale plasma

Confinement of intense proton beams by an applied axial magnetic field in large-scale plasma

Internal structural changes in crystals induced by GeV heavy ion beam irradiation of LiF

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