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Laser-driven ultrafast antiproton beam

Author:
Li, Shun  Pei, Zhikun  Shen, Baifei  Xu, Jiancai  Zhang, Lingang  Zhang, Xiaomei  Xu, Tongjun  Yu, Yong  Bu, Zhigang  


Journal:
PHYSICS OF PLASMAS


Issue Date:
2018


Abstract(summary):

Antiproton beam generation is investigated based on the ultra-intense femtosecond laser pulse by using two-dimensional particle-in-cell and Geant4 simulations. A high-flux proton beam with an energy of tens of GeV is generated in sequential radiation pressure and bubble regime and then shoots into a high-Z target for producing antiprotons. Both yield and energy of the antiproton beam increase almost linearly with the laser intensity. The generated antiproton beam has a short pulse duration of about 5 ps and its flux reaches 2 x 10(20) s(-1) at the laser intensity of 2: 14 x 10(23)W/cm(2). Compared to conventional methods, this new method based on the ultra-intense laser pulse is able to provide a compact, tunable, and ultrafast antiproton source, which is potentially useful for quark-gluon plasma study, all-optical antihydrogen generation, and so on. Published by AIP Publishing.


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