Observations of fast protons above 1 MeV produced in direct-drive laser-fusion experiments

被引：27

作者：

Hicks, DG ^{[2
]}

Li, CK

Séguin, FH

Schnittman, JD

Ram, AK

Frenje, JA

Petrasso, RD

Soures, JM

Meyerhofer, DD

Roberts, S

Sorce, C

Stöckl, C

Sangster, TC

Phillips, TW

机构：

[1] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA

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

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

来源：

PHYSICS OF PLASMAS | 2001年 / 8卷 / 02期

关键词：

D O I：

10.1063/1.1335831

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 protons greater than or similar to1 MeV have been observed on the 60-beam, 30 kJ OMEGA laser [T. R. Boehly , Opt. Commun. 133, 495 (1997)] at an intensity I similar or equal to 10(15) W/cm(2) and a wavelength lambda = 0.35 mum. These energies are more than 5 times greater than those observed on previous, single-beam experiments at the same I lambda (2). The total energy in the proton spectrum above 0.2 MeV is similar to0.1% of the laser energy. Some of the proton spectra display intense, regular lines which may be related to ion acoustic perturbations in the expanding plasma. (C) 2001 American Institute of Physics.

引用

页码：606 / 610

页数：5

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