Measurements of fast electron scaling generated by petawatt laser systems

被引：42

作者：

Tanimoto, Tsuyoshi ^{[1
,2
]}

Habara, H. ^{[1
,2
]}

Kodama, R. ^{[1
,2
]}

Nakatsutsumi, M. ^{[1
,2
]}

Tanaka, Kazuo A. ^{[1
,2
]}

Lancaster, K. L. ^{[3
]}

Green, J. S. ^{[3
]}

Scott, R. H. H. ^{[3
,4
]}

Sherlock, M. ^{[3
,4
]}

Norreys, Peter A. ^{[3
,4
]}

Evans, R. G. ^{[4
]}

Haines, M. G. ^{[4
]}

Kar, S. ^{[5
]}

Zepf, M. ^{[5
]}

King, J. ^{[6
]}

Ma, T. ^{[6
]}

Wei, M. S. ^{[6
]}

Yabuuchi, T. ^{[6
]}

Beg, F. N. ^{[6
]}

Key, M. H. ^{[7
]}

Nilson, P. ^{[8
]}

Stephens, R. B. ^{[9
]}

Azechi, H. ^{[10
]}

Nagai, K. ^{[10
]}

Norimatsu, T. ^{[10
]}

Takeda, K. ^{[10
]}

Valente, J. ^{[11
]}

Davies, J. R. ^{[11
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan

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

[3] STFC Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[4] Univ London Imperial Coll Sci Technol & Med, Dept Phys, Blackett Lab, London SW7 2BZ, England

[5] Queens Univ Belfast, Ctr Plasma Phys, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland

[6] Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA

[7] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[8] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA

[9] Gen Atom Co, San Diego, CA 92186 USA

[10] Osaka Univ, Inst Laser Engn, Suita, Osaka 565, Japan

[11] Inst Super Tecn, Grp Lasers & Plasmas, Ctr Fis Plasma, P-1049001 Lisbon, Portugal

来源：

PHYSICS OF PLASMAS | 2009年 / 16卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

electron spectra; ignition; plasma light propagation; PLASMA; PULSE;

D O I：

10.1063/1.3155086

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：

Fast electron energy spectra have been measured for a range of intensities between 10(18) and 10(21) W cm(-2) and for different target materials using electron spectrometers. Several experimental campaigns were conducted on petawatt laser facilities at the Rutherford Appleton Laboratory and Osaka University, where the pulse duration was varied from 0.5 to 5 ps relevant to upcoming fast ignition integral experiments. The incident angle was also changed from normal incidence to 40 degrees in p-polarized. The results confirm a reduction from the ponderomotive potential energy on fast electrons at the higher intensities under the wide range of different irradiation conditions.

引用

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