Quasi-monoenergetic Tens-of-MeV Proton Beams by a Laser-Illuminated Funnel-Like Target

作     者：BAN Hong-Ye GU Yan-Jun KONG Qing LI Ying-Ying ZHU Zhen S.Kawata 班洪叶;顾彦珺;孔青;李英瑛;朱真;S.Kawata

作者机构：Applied Ion Beam Physics LaboratoryKey Laboratory of the Ministry of EducationInstitute of Modern PhysicsFudan UniversityShanghai 200433 Department of Interdisciplinary SciencesUtsunomiya UniversityYohtoh 712Utsunomiya 3218585Japan 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2012年第29卷第3期

页      面：142-145页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant No 11175048 the Shanghai Nature Science Foundation(No 11ZR1402700) the Shanghai Scientific Research Innovation Key Project(No 12ZZ011) The Shanghai Leading Academic Discipline Project(B107) the JSPS-CAS CUP Program and the CORE of Utsunomiya University 

主　　题：strict cylindrical cylinder 

摘      要：From numerical simulations,we study the generation of quasi-monoenergetic MeV proton beams from a laserilluminated funnel-like *** show that,when passing through such a target,the laser beam can be focused and constricted within a cylindrical bore at the funnel apex from which proton beams are *** by a much-enhanced laser intensity,the proton beams experience more acceleration time than with normal funnel *** from the cylinder bore,combined with an enhancement of a separated charge field from Al electrons,protons can attain higher energies up to several tens of *** the same time,strong suppression of the transverse divergence of the laser and proton beams yields a localized,collimated,mono-energetic proton beam.