Ion energy scaling under optimum conditions of laser plasma acceleration from solid density targets

被引：36

作者：

Brantov, A. V. ^{[1
,2
]}

Govras, E. A. ^{[1
,2
]}

Bychenkov, V. Yu. ^{[1
,2
]}

Rozmus, W. ^{[3
]}

机构：

[1] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

[2] ROSATOM, Ctr Fundamental & Appl Res, VNIIA, Moscow 127055, Russia

[3] Univ Alberta, Inst Theoret Phys, Edmonton, AB T6G 2E1, Canada

来源：

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2015年 / 18卷 / 02期

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会; 加拿大自然科学与工程研究理事会;

关键词：

GENERATION; PULSES; BEAMS;

D O I：

10.1103/PhysRevSTAB.18.021301

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：

A new, maximum proton energy, epsilon, scaling law with the laser pulse energy, E-L, has been derived for solid density foils from the results of 3D particle-in-cell simulations. Utilizing numerical modeling, protons are accelerated during interactions of the femtosecond relativistic laser pulses with the plain semitransparent targets of optimum thickness. The scaling, epsilon similar to E-L(0.7), has been obtained for the wide range of laser energies, different spot sizes, and laser pulse durations. Our results show that the proper selection of foil target optimum thicknesses results in a very promising increase of the proton energy with the laser intensity even in the range of parameters below the radiation pressure (light sail) regime. The proposed analytical model is consistent with numerical simulations.

引用

页数：7

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