Hot electron diagnostic in a solid laser target by K-shell lines measurement from ultraintense laser-plasma interactions (3x1020 W/cm2,≤400 J)

被引：99

作者：

Yasuike, K ^{[1
]}

Key, MH ^{[1
]}

Hatchett, SP ^{[1
]}

Snavely, RA ^{[1
]}

Wharton, KB ^{[1
]}

机构：

[1] Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2001年 / 72卷 / 01期

关键词：

D O I：

10.1063/1.1319373

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Characterization of hot electron production from an ultraintense laser-solid target plasma interaction by using a buried molybdenum K-shell fluor layer technique has been reported. Laser energy was typically 400 J and its intensity was from 2 x 10(18) up to 3 x 10(20) W cm(-2) at 20 TW to 1 PW laser power by changing pulse duration from 20 ps down to 0.5 ps. X-ray background noise level was significantly greater, i.e., gamma flash, in the shorter pulse experiments. Data analysis procedures for the experiments were developed. The conversion efficiency from the laser energy into the energy, carried by hot electrons, has been estimated to be similar to 50% at 3 x 10(20) W cm(-2) laser intensity, higher than similar to 18% at 10(19) W cm(-2) and similar to 12% at 2 x 10(18) W cm(-2) intensity. (C) 2001 American Institute of Physics.

引用

页码：1236 / 1240

页数：5

共 17 条

[1]

[Anonymous], 1986, NUCL SCI ENG, DOI DOI 10.13182/NSE86-A18182

[2]

Beg FN, 1997, PHYS PLASMAS, V4, P447, DOI 10.1063/1.872103

[3] HOT-ELECTRON CHARACTERIZATION FROM K-ALPHA MEASUREMENTS IN HIGH-CONTRAST, P-POLARIZED, PICOSECOND LASER-PLASMA INTERACTIONS [J].

CHEN, H ;

SOOM, B ;

YAAKOBI, B ;

UCHIDA, S ;

MEYERHOFER, DD .

PHYSICAL REVIEW LETTERS, 1993, 70 (22) :3431-3434

[4] ENERGY DEPOSITION BY HOT-ELECTRONS IN CO2-LASER-IRRADIATED TARGETS [J].

EBRAHIM, NA ;

JOSHI, C ;

BALDIS, HA .

PHYSICAL REVIEW A, 1982, 25 (04) :2440-2443

[5] MEASUREMENT OF FAST-ELECTRON ENERGY-SPECTRA AND PREHEATING IN LASER-IRRADIATED TARGETS [J].

HARES, JD ;

KILKENNY, JD ;

KEY, MH ;

LUNNEY, JG .

PHYSICAL REVIEW LETTERS, 1979, 42 (18) :1216-1219

[6] Electron, photon, and ion beams from the relativistic interaction of Petawatt laser pulses with solid targets [J].

Hatchett, SP ;

Brown, CG ;

Cowan, TE ;

Henry, EA ;

Johnson, JS ;

Key, MH ;

Koch, JA ;

Langdon, AB ;

Lasinski, BF ;

Lee, RW ;

Mackinnon, AJ ;

Pennington, DM ;

Perry, MD ;

Phillips, TW ;

Roth, M ;

Sangster, TC ;

Singh, MS ;

Snavely, RA ;

Stoyer, MA ;

Wilks, SC ;

Yasuike, K .

PHYSICS OF PLASMAS, 2000, 7 (05) :2076-2082

[7] X-RAY SPECTROSCOPY OF HOT SOLID DENSITY PLASMAS PRODUCED BY SUBPICOSECOND HIGH-CONTRAST LASER-PULSES AT 10(18)-10(19) W/CM(2) [J].

JIANG, Z ;

KIEFFER, JC ;

MATTE, JP ;

CHAKER, M ;

PEYRUSSE, O ;

GILLES, D ;

KORN, G ;

MAKSIMCHUK, A ;

COE, S ;

MOUROU, G .

PHYSICS OF PLASMAS, 1995, 2 (05) :1702-1711

[8]

KEY MH, 1998, P IAEA FUS EN 17 C I, V3, P1093

[9] K-ALPHA-EMISSION MEASUREMENTS AND SUPERTHERMAL ELECTRON-TRANSPORT IN LAYERED LASER-IRRADIATED DISK TARGETS [J].

LUTHERDAVIES, B ;

PERRY, A ;

NUGENT, KA .

PHYSICAL REVIEW A, 1987, 35 (10) :4306-4313

[10] BINOMIAL SMOOTHING FILTER - A WAY TO AVOID SOME PITFALLS OF LEAST-SQUARES POLYNOMIAL SMOOTHING [J].

MARCHAND, P ;

MARMET, L .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1983, 54 (08) :1034-1041

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