Proton beam shaped by “particle lens” formed by laser-driven hot electrons

Journal Article · Mon May 23 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4952742· OSTI ID:22590717

Zhai, S. H.; Zhang, H.; Zhang, L. G.; Huang, S.; Xu, Z. Z. ^[1]; He, S. K.; Lu, F.; Zhang, F. Q.; Deng, Z. G.; Dong, K. G.; Wang, S. Y.; Zhou, K. N.; Xie, N.; Wang, X. D.; Liu, H. J.; Zhao, Z. Q.; Zhang, B. H. ^[2]

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1. State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)
2. Science and Technology on Plasma Physics Laboratory, Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900 (China)

Two-dimensional tailoring of a proton beam is realized by a “particle lens” in our experiment. A large quantity of electrons, generated by an intense femtosecond laser irradiating a polymer target, produces an electric field strong enough to change the trajectory and distribution of energetic protons flying through the electron area. The experiment shows that a strip pattern of the proton beam appears when hot electrons initially converge inside the plastic plate. Then the shape of the proton beam changes to a “fountain-like” pattern when these hot electrons diffuse after propagating a distance.

• OSTI ID: 22590717
• Journal Information: Applied Physics Letters, Vol. 108, Issue 21; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DISTANCE
DISTRIBUTION
ELECTRIC FIELDS
LASERS
PLATES
PROTON BEAMS
SHAPE