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Title: New source of MeV negative ion and neutral atom beams

The scenario of “electron-capture and -loss” was recently proposed for the formation of negative ion and neutral atom beams with MeV kinetic energies. However, it does not explain why the formation of negative ions in a liquid spray is much more efficient than with an isolated atom. The role of atomic excited states in the charge-exchange processes is considered, and it is shown that it cannot account for the observed phenomena. The processes are more complex than the single electron-capture and -loss approach. It is suggested that the shell effects in the electronic structure of the projectile ion and/or target atoms may influence the capture/loss probabilities.
Authors:
 [1] ;  [2] ; ;  [3] ;  [4] ;  [5] ; ;  [6]
  1. Center for Relativistic Laser Science, Institute for Basic Science (IBS), Gwangju 500-712 (Korea, Republic of)
  2. (Korea, Republic of)
  3. Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Berlin 12489 (Germany)
  4. Institute for Laser and Plasma Physics, Heinrich Heine University, Duesseldorf 40225 (Germany)
  5. School of Mathematics and Physics, The Queen’s University of Belfast, Belfast BT7-1NN (United Kingdom)
  6. Centre Lasers Intenses et Applications, CEA, CNRS, University of Bordeaux, 33405 Talence (France)
Publication Date:
OSTI Identifier:
22482954
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ANIONS; ATOMIC BEAMS; ATOMS; CHARGE EXCHANGE; ELECTRON CAPTURE; ELECTRONIC STRUCTURE; EXCITED STATES; KINETIC ENERGY; LIQUIDS; LOSSES; MEV RANGE