Role of target material in proton acceleration from thin foils irradiated by ultrashort laser pulses

被引：10
|
作者：
Tayyab, M. [1 ]
Bagchi, S. [1 ]
Ramakrishna, B. [1 ]
Mandal, T. [1 ]
Upadhyay, A. [1 ]
Ramis, R. [2 ]
Chakera, J. A. [1 ]
Naik, P. A. [1 ]
Gupta, P. D. [1 ]
机构：
[1] Raja Ramanna Ctr Adv Technol, Laser Plasma Div, Indore 452013, Madhya Pradesh, India
[2] Univ Politecn Madrid, ETSI Aeronaut, E-28040 Madrid, Spain
来源：
PHYSICAL REVIEW E | 2014年 / 90卷 / 02期
关键词：
ION-ACCELERATION; EMISSION; DRIVEN; BEAMS; FS;
D O I：
10.1103/PhysRevE.90.023103
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
We report on the proton acceleration studies from thin metallic foils of varying atomic number (Z) and thicknesses, investigated using a 45 fs, 10 TW Ti:sapphire laser system. An optimum foil thickness was observed for efficient proton acceleration for our laser conditions, dictated by the laser ASE prepulse and hot electron propagation behavior inside the material. The hydrodynamic simulations for ASE prepulse support the experimental observation. The observed maximum proton energy at different thicknesses for a given element is in good agreement with the reported scaling laws. The results with foils of different atomic number Z suggest that a judicious choice of the foil material can enhance the proton acceleration efficiency, resulting into higher proton energy.
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页数：7
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