Enhancement of the conversion efficiency of soft x-ray by colliding gold plasmas

Autor:	P. F. Zheng, M. Zi, Y. Y. Ma, S. Kawata, X. H. Yang, Wenpeng Wang, Guo-Bo Zhang, Y. Yuan, Y. Z. Ke, Y. Cui, F. Y. Wu, B. H. Xu, S. J. Chen
Rok vydání:	2021
Předmět:	Physics Opacity Physics::Instrumentation and Detectors Astrophysics::High Energy Astrophysical Phenomena Energy conversion efficiency Plasma Radiation Condensed Matter Physics Laser Instability law.invention Physics::Plasma Physics law Atomic physics Inertial confinement fusion FOIL method
Zdroj:	Physics of Plasmas. 28:113301
ISSN:	1089-7674 1070-664X
DOI:	10.1063/5.0063045
Popis:	A new scheme is proposed to enhance the conversion efficiency (CE) of soft x-rays (0.1–1.5 keV) generated by irradiating a double-gold-foil target using double laser pulses to collide gold plasmas. A detailed analysis of the hydrodynamic evolution of the colliding plasmas is performed by using one-dimensional radiation hydrodynamic simulations. The results show that the total soft x-ray CE can be enhanced up to 71.5% by setting the foil thickness as d1 = 0.3 μm, and this is 14.5% higher than that for a single laser irradiating a single-gold-foil target. Most of the enhanced soft x-ray CEs are generated from a stagnation layer formed by plasma collisions. Such a scheme is simple and practical, which is beneficial for their applications in astrophysical opacity calculations, inertial confinement fusion, and hydrodynamic instability analyses.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::afc24be515200488fa572debbf36ecdb https://doi.org/10.1063/5.0063045 Zobrazit plný text záznamu