Measurement of radiative shock properties by X-ray Thomson scattering
Physical Review Letters 108:14 (2012)
Abstract:
X-ray Thomson scattering has enabled us to measure the temperature of a shocked layer, produced in the laboratory, that is relevant to shocks emerging from supernovas. High energy lasers are used to create a shock in argon gas which is probed by x-ray scattering. The scattered, inelastic Compton feature allows inference of the electron temperature. It is measured to be 34 eV in the radiative precursor and ∼60eV near the shock. Comparison of energy fluxes implied by the data demonstrates that the shock wave is strongly radiative. © 2012 American Physical Society.Gigabar material properties experiments on nif and omega
AIP Conference Proceedings AIP Publishing 1426:1 (2012) 477-480
Probing dynamic material strength using in situ x-ray diffraction
AIP Conference Proceedings AIP Publishing 1426:1 (2012) 975-978
Quasi-phase-matching high harmonic generation using trains of pulses produced using an array of birefringent plates.
Opt Express 20:6 (2012) 6236-6247
Abstract:
Quasi-phase-matched high harmonic generation using trains of up to 8 counter-propagating pulses is explored. For trains of up to 4 pulses the measured enhancement of the harmonic signal scales with the number of pulses N as (N + 1)², as expected. However, for trains with N > 4, no further enhancement of the harmonic signal is observed. This effect is ascribed to changes of the coherence length Lc within the generating medium. Techniques for overcoming the variation of Lc are discussed. The pressure dependence of quasi-phase-matching is investigated and the switch from true-phase-matching to quasi-phase-matching is observed.26pYC-8 レーザー生成非一様プラブマ中の衝撃波による磁場増幅(26pYC 領域2,宇宙線・宇宙物理領域,領域11合同招待講演 プラズマ宇宙物理・プラズマ基礎(流体・衝撃波・リコネクション),領域2(プラズマ基礎・プラズマ科学・核融合プラズマ・プラズマ宇宙物理))
(2012) 276