Direct measurement of coherent ultrahigh wakefields excited by intense ultrashort laser pulses in a gas-jet plasma

被引：47

作者：

Kotaki, H ^{[1
]}

Kando, M

Oketa, T

Masuda, S

Koga, JK

Kondo, S

Kanazawa, S

Yokoyama, T

Matoba, T

Nakajima, K

机构：

[1] Japan Atom Energy Res Inst, Kyoto 6190215, Japan

[2] Grad Univ Adv Studies, Kanagawa 2400193, Japan

[3] High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

来源：

PHYSICS OF PLASMAS | 2002年 / 9卷 / 04期

关键词：

D O I：

10.1063/1.1457464

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：

The coherent wakefield excited by 2 TW, 50 fs laser pulses in a gas-jet plasma around 10(18) cm(-3) is measured with a time-resolved frequency domain interferometer. The density distribution of the helium gas is measured with a time-resolved Mach-Zehnder interferometer to search for the optimum laser focus position and timing in the gas jet. The results show an accelerating wakefield excitation of 20 GeV/m with good coherency, which is useful for ultrahigh gradient particle acceleration in a compact system. This is the first time-resolved measurement of laser wakefield excitation in a gas-jet plasma. (C) 2002 American Institute of Physics.

引用

页码：1392 / 1400

页数：9

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