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Title: The impact of low-Z impurities on x-ray conversion efficiency from laser-produced plasmas of low-density gold foam targets

It is an important approach to improve the x-ray conversion efficiency of laser-ablated high-Z plasmas by using low initial density materials for various applications. However, unavoidable low-Z impurities in the manufacture process of low-density high-Z foam targets will depress this effect. A general easy-to-use analytical model based on simulations was developed to evaluate the quantitative impact of impurities within the gold foam target on laser to x-ray conversion efficiency. In addition, the x-ray conversion efficiencies of 1 g/cm{sup 3} gold foams with two different initial contents of impurities were experimentally investigated. Good agreements have been achieved between the model results and experiments.
Authors:
 [1] ;  [2] ; ; ; ; ; ; ; ; ;  [1] ;  [3]
  1. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900 (China)
  2. (China)
  3. Department of Engineering Physics, Tsinghua University, Beijing 100084 (China)
Publication Date:
OSTI Identifier:
22218377
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 12; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ABLATION; FOAMS; GOLD; LASER TARGETS; LASER-PRODUCED PLASMA; LASERS; MODE CONVERSION; PLASMA IMPURITIES; PLASMA PRODUCTION; PLASMA SIMULATION; X RADIATION