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Title: Analyses of the plasma generated by laser irradiation on sputtered target for determination of the thickness used for plasma generation

In Brookhaven National Laboratory, laser ion source has been developed to provide heavy ion beams by using plasma generation with 1064 nm Nd:YAG laser irradiation onto solid targets. The laser energy is transferred to the target material and creates a crater on the surface. However, only the partial material can be turned into plasma state and the other portion is considered to be just vaporized. Since heat propagation in the target material requires more than typical laser irradiation period, which is typically several ns, only the certain depth of the layers may contribute to form the plasma. As a result, the depth is more than 500 nm because the base material Al ions were detected. On the other hand, the result of comparing each carbon thickness case suggests that the surface carbon layer is not contributed to generate plasma.
Authors:
 [1] ;  [2] ; ; ;  [3] ;  [2] ;  [3] ;  [2] ;  [4] ; ;  [5] ;  [1]
  1. Cooperative Major in Nuclear Energy, Waseda University, Shinjuku, Tokyo (Japan)
  2. (Japan)
  3. RIKEN, Wako, Saitama (Japan)
  4. American Nuclear Society, University of Michigan, Ann Arbor, Michigan 48109 (United States)
  5. Collider-Accelerator Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
Publication Date:
OSTI Identifier:
22253512
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 2; Conference: ICIS 2011: 14. international conference on ion sources, Giardini-Naxos, Sicily (Italy), 12-16 Sep 2011; Other Information: (c) 2014 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; 74 ATOMIC AND MOLECULAR PHYSICS; ALUMINIUM IONS; BNL; CARBON; HEAT; HEAVY IONS; ION SOURCES; LASER RADIATION; NEODYMIUM LASERS; PLASMA; THICKNESS