Laser-driven γ-ray, positron, and neutron source from ultra-intense laser-matter interactions

被引：8

作者：

Nakamura, Tatsufumi ^{[1
]}

Hayakawa, Takehito ^{[2
]}

机构：

[1] Fukuoka Inst Technol, Fukuoka, Fukuoka 8110295, Japan

[2] Japan Atom Energy Agcy, Tokai, Ibaraki 3191106, Japan

来源：

PHYSICS OF PLASMAS | 2015年 / 22卷 / 08期

关键词：

PULSE INTERACTIONS; ION-BEAMS; ELECTRON; PLASMA;

D O I：

10.1063/1.4928889

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：

In ultra-intense laser-matter interactions, gamma-rays are effectively generated via the radiation reaction effect. Since a significant fraction of the laser energy is converted into gamma-rays, understanding of the energy transport inside of the target is important. We have developed a Particle-in-Cell code which includes generation of the gamma-rays, their energy transport, and photo-nuclear reactions. Using the code, we have investigated the characteristics of the quantum beams generated by the transport of the laser-driven gamma-rays. It is shown that collimated, mono-energetic positron beams with hundreds of MeV are generated by using thick targets. Neutron beams are also effectively generated by using beryllium targets via photo-nuclear reactions. These lead to the proposal of quantum beam sources of gamma-rays, positrons, and neutrons with distinctive characters, which are selectively generated by choosing target conditions. (C) 2015 AIP Publishing LLC.

引用

页数：6

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