Enhancement of energetic electrons and protons by cone guiding of laser light

被引：41

作者：

Chen, ZL ^{[1
]}

Kodama, R ^{[1
]}

Nakatsutsumi, M ^{[1
]}

Nakamura, H ^{[1
]}

Tampo, M ^{[1
]}

Tanaka, KA ^{[1
]}

Toyama, Y ^{[1
]}

Tsutsumi, T ^{[1
]}

Yabuuchi, T ^{[1
]}

机构：

[1] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan

来源：

PHYSICAL REVIEW E | 2005年 / 71卷 / 03期

关键词：

D O I：

10.1103/PhysRevE.71.036403

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：

Energetic electrons and protons are observed when a target consisting of a reentrant cone with a disk at the tip is irradiated by a petawatt (PW) laser at an intensity of approximately 10(19) W cm(-2). The angular distribution of the electrons and protons, dependent on the open angle of the reentrant cone, is found to differ from that in the case when a target with planar geometry is used. Two jet beams are observed, in directions parallel to the cone axis and normal to the cone-shaped wall. The number and cutoff energies of the generated protons are also related to the open angle of the cone. The efficiency of the generation of energetic electrons from the cone target is 2-3 times higher than that from a simple plane target. These results indicate a guiding of the PW laser beam in the cone geometry.

引用

页数：5

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