Effect of shock heating on the stability of laser-driven targets

被引：13

作者：

Boehly, TR

Delettrez, JA

Knauer, JP

Meyerhofer, DD

Yaakobi, B

Town, RPJ

Hoarty, D

机构：

[1] Univ Rochester, Laser Energet Lab, Dept Phys & Astron, Rochester, NY 14623 USA

[2] Univ Rochester, Dept Mech Engn, Rochester, NY 14623 USA

[3] Atom Weap Estab, Reading RG7 4PR, Berks, England

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.87.145003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The shock heating of a laser-driven, direct-drive target can determine its stability by affecting Rayleigh-Taylor growth rates through target decompression and ablative stabilization. Measurements indicate that pulses that rise rapidly to 10(14) W/cm(2) produce shock-induced temperatures of similar to 25 eV, whereas more slowly rising pulses show less heating. Analysis of the observed target behavior produced by these two pulses demonstrates that shock heating improves hydrodynamic stability because ablative stabilization increases when the targets are preheated by shocks.

引用

收藏

页码：145003/1 / 145003/4

页数：4

相关论文

共 24 条

[1] Growth rates of the ablative Rayleigh-Taylor instability in inertial confinement fusion [J].

Betti, R ;

Goncharov, VN ;

McCrory, RL ;

Verdon, CP .

PHYSICS OF PLASMAS, 1998, 5 (05) :1446-1454

[2] Self-consistent stability analysis of ablation fronts in inertial confinement fusion [J].

Betti, R ;

Goncharov, VN ;

McCrory, RL ;

Sorotokin, P ;

Verdon, CP .

PHYSICS OF PLASMAS, 1996, 3 (05) :2122-2128

[3] RAYLEIGH-TAYLOR INSTABILITY AND LASER-PELLET FUSION [J].

BODNER, SE .

PHYSICAL REVIEW LETTERS, 1974, 33 (13) :761-764

[4] Direct-drive laser fusion: Status and prospects [J].

Bodner, SE ;

Colombant, DG ;

Gardner, JH ;

Lehmberg, RH ;

Obenschain, SP ;

Phillips, L ;

Schmitt, AJ ;

Sethian, JD ;

McCrory, RL ;

Seka, W ;

Verdon, CP ;

Knauer, JP ;

Afeyan, BB ;

Powell, HT .

PHYSICS OF PLASMAS, 1998, 5 (05) :1901-1918

[5] Initial performance results of the OMEGA laser system [J].

Boehly, TR ;

Brown, DL ;

Craxton, RS ;

Keck, RL ;

Knauer, JP ;

Kelly, JH ;

Kessler, TJ ;

Kumpan, SA ;

Loucks, SJ ;

Letzring, SA ;

Marshall, FJ ;

McCrory, RL ;

Morse, SFB ;

Seka, W ;

Soures, JM ;

Verdon, CP .

OPTICS COMMUNICATIONS, 1997, 133 (1-6) :495-506

[6] Optical and plasma smoothing of laser imprinting in targets driven by lasers with SSD bandwidths up to 1 THz [J].

Boehly, TR ;

Goncharov, VN ;

Gotchev, O ;

Knauer, JP ;

Meyerhofer, DD ;

Oron, D ;

Regan, SP ;

Srebro, Y ;

Seka, W ;

Shvarts, D ;

Skupsky, S ;

Smalyuk, VA .

PHYSICS OF PLASMAS, 2001, 8 (05) :2331-2337

[7] MEASUREMENTS OF THE EFFECT OF LASER-BEAM SMOOTHING ON DIRECT-DRIVE INERTIAL-CONFINEMENT-FUSION CAPSULE IMPLOSIONS [J].

BRADLEY, DK ;

DELETTREZ, JA ;

VERDON, CP .

PHYSICAL REVIEW LETTERS, 1992, 68 (18) :2774-2777

[8]

CAMPBELL EM, 2000, INERTIAL FUSION SCI, P9

[9] SATURATION EFFECTS IN K-ALPHA ABSORPTION-SPECTROSCOPY OF LASER-PRODUCED PLASMAS [J].

CHENAISPOPOVICS, C ;

FIEVET, C ;

GEINDRE, JP ;

MATSUSHIMA, I ;

GAUTHIER, JC .

PHYSICAL REVIEW A, 1990, 42 (08) :4788-4794

[10] THE ROLE OF THE RAYLEIGH-TAYLOR INSTABILITY IN LASER-DRIVEN BURNTHROUGH EXPERIMENTS [J].

DELETTREZ, J ;

BRADLEY, DK ;

VERDON, CP .

PHYSICS OF PLASMAS, 1994, 1 (07) :2342-2349