Proton acceleration by radially polarized chirped laser pulses

被引：10
作者：
Liu, Jin-Lu [1 ,2 ]
Sheng, Z. M. [1 ,2 ,3 ]
Zheng, J. [1 ,2 ]
Liu, C. S. [4 ]
Zhang, J. [1 ,2 ,3 ]
机构：
[1] Shanghai Jiao Tong Univ, Minist Educ, Key Lab Laser Plasmas, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China
[3] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[4] Univ Maryland, EW Space Sci Ctr, College Pk, MD 20742 USA
来源：
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2012年 / 15卷 / 04期
基金：
中国国家自然科学基金;
关键词：
FIELDS; BEAM; VACUUM;
D O I：
10.1103/PhysRevSTAB.15.041301
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Within the framework of plane-wave angular spectrum analysis of electromagnetic fields, a solution for the field of a tightly focused radially polarized (RP) chirped laser pulse is presented. With this solution, direct laser acceleration of protons by this kind of RP laser pulses is investigated numerically. It is found that a RP laser pulse with proper negative frequency chirps can lead to efficient proton acceleration, reaching sub-GeV at the laser intensity of 10(22) W/cm(2) from its injection energy of 45 MeV.
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页数：8
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