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Title: Angular distribution of ions and extreme ultraviolet emission in laser-produced tin droplet plasma

Angular-resolved ion time-of-flight spectra as well as extreme ultraviolet radiation in laser-produced tin droplet plasma are investigated experimentally and theoretically. Tin droplets with a diameter of 150 μm are irradiated by a pulsed Nd:YAG laser. The ion time-of-flight spectra measured from the plasma formed by laser irradiation of the tin droplets are interpreted in terms of a theoretical elliptical Druyvesteyn distribution to deduce ion density distributions including kinetic temperatures of the plasma. The opacity of the plasma for extreme ultraviolet radiation is calculated based on the deduced ion densities and temperatures, and the angular distribution of extreme ultraviolet radiation is expressed as a function of the opacity using the Beer–Lambert law. Our results show that the calculated angular distribution of extreme ultraviolet radiation is in satisfactory agreement with the experimental data.
Authors:
; ;  [1] ;  [2] ; ; ;  [3] ;  [4]
  1. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074 (China)
  2. (China)
  3. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074 (China)
  4. School of Physics, Huazhong University of Science and Technology, Wuhan 430074 (China)
Publication Date:
OSTI Identifier:
22410206
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 19; Other Information: (c) 2015 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; ANGULAR DISTRIBUTION; DROPLETS; EXTREME ULTRAVIOLET RADIATION; ION DENSITY; LAMBERT LAW; LASER RADIATION; LASER-PRODUCED PLASMA; NEODYMIUM LASERS; OPACITY; PLASMA DIAGNOSTICS; PLASMA PRODUCTION; PULSED IRRADIATION; TIME-OF-FLIGHT METHOD; TIN