Angular distribution of neutrons from deuterated cluster explosions driven by femtosecond laser pulses

被引：30

作者：

Buersgens, F. ^{[1
]}

Madison, K. W. ^{[1
]}

Symes, D. R. ^{[1
]}

Hartke, R. ^{[1
]}

Osterhoff, J. ^{[1
]}

Grigsby, W. ^{[1
]}

Dyer, G. ^{[1
]}

Ditmire, T. ^{[1
]}

机构：

[1] Univ Texas, Dept Phys, Texas Ctr High Intens Laser Sci, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW E | 2006年 / 74卷 / 01期

关键词：

D O I：

10.1103/PhysRevE.74.016403

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：

We have studied experimentally the angular distributions of fusion neutrons from plasmas of multi-keV ion temperature, created by 40 fs, multi-TW laser pulses in dense plumes of D-2 and CD4 clusters. A slight anisotropy in the neutron emission is observed. We attribute this anisotropy to the fact that the differential cross section for DD fusion is anisotropic even at low collision energies, and this, coupled with the geometry of the gas jet target, leads to beam-target neutrons that are slightly directed. The qualitative features of this anisotropy are confirmed by Monte Carlo simulations.

引用

页数：7

共 25 条

[1] Neutron production in a picosecond laser plasma at a radiation intensity of 3x1017 W/cm2 [J].

Belyaev, VS ;

Vinogradov, VI ;

Kurilov, AS ;

Matafonov, AP ;

Andrianov, VP ;

Ignat'ev, GN ;

Faenov, AY ;

Pikuz, TA ;

Skobelev, IY ;

Magunov, AI ;

Pikuz, SA ;

Sharkov, BY .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2004, 98 (06) :1133-1137

[2] Electron response in laser-irradiated microclusters [J].

Breizman, BN ;

Arefiev, AV .

PLASMA PHYSICS REPORTS, 2003, 29 (07) :593-597

[3] DIFFERENTIAL CROSS-SECTIONS AT LOW ENERGIES FOR H-2(D,P)H-3 AND H-2(D,N)HE-3 [J].

BROWN, RE ;

JARMIE, N .

PHYSICAL REVIEW C, 1990, 41 (04) :1391-1400

[4] Fast neutron emission from a high-energy ion beam produced by a high-intensity subpicosecond laser pulse [J].

Disdier, L ;

Garçonnet, JP ;

Malka, G ;

Miquel, JL .

PHYSICAL REVIEW LETTERS, 1999, 82 (07) :1454-1457

[5] High-energy ions produced in explosions of superheated atomic clusters [J].

Ditmire, T ;

Tisch, JWG ;

Springate, E ;

Mason, MB ;

Hay, N ;

Smith, RA ;

Marangos, J ;

Hutchinson, MHR .

NATURE, 1997, 386 (6620) :54-56

[6] Nuclear fusion from explosions of femtosecond laser-heated deuterium clusters [J].

Ditmire, T ;

Zweiback, J ;

Yanovsky, VP ;

Cowan, TE ;

Hays, G ;

Wharton, KB .

NATURE, 1999, 398 (6727) :489-492

[7] Ion heating and thermonuclear neutron production from high-intensity subpicosecond laser pulses interacting with underdense plasmas [J].

Fritzler, S ;

Najmudin, Z ;

Malka, V ;

Krushelnick, K ;

Marle, C ;

Walton, B ;

Wei, MS ;

Clarke, RJ ;

Dangor, AE .

PHYSICAL REVIEW LETTERS, 2002, 89 (16) :165004/1-165004/4

[8] Deuterium-deuterium fusion dynamics in low-density molecular-cluster jets irradiated by intense ultrafast laser pulses [J].

Grillon, G ;

Balcou, P ;

Chambaret, JP ;

Hulin, D ;

Martino, J ;

Moustaizis, S ;

Notebaert, L ;

Pittman, M ;

Pussieux, T ;

Rousse, A ;

Rousseau, JP ;

Sebban, S ;

Sublemontier, O ;

Schmidt, M .

PHYSICAL REVIEW LETTERS, 2002, 89 (06) :065005/1-065005/4

[9]

Hilscher D, 2001, PHYS REV E, V64, DOI 10.1103/PhysRevE.64.016414

[10]

HUBA JD, 2000, NRL PLASMA FORMULARY, P44

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