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Title: Neutral resonant ionization in a H{sup −} plasma source: Potential of doubly excited **H{sup −}

Hydrogen plasmas are optically dense to Lyman-α radiation, maintaining *H(n = 2) neutral atoms that may undergo neutral resonant ionization to **H{sup −}. One state, **H{sup −}(2p{sup 2} {sup 3}P{sup e}), is thought bound at 9.7 meV with a several nanosecond lifetime while all others are unbound resonances. Collision dynamics of two *H(2s) shows that an ionic pair of (p, **H{sup −}) resolves at least three long-standing collision experiments. The doubly excited anion also has a path to the unexcited ion pair whose only physical distinction is that both (p, H{sup −}) have energy of 3.7 eV.
Authors:
 [1]
  1. University of California (retired), 8300 Feliz Creek Dr., Ukiah, California 95482 (United States)
Publication Date:
OSTI Identifier:
22482856
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:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ANIONS; ATOMS; COLLISIONS; EV RANGE 01-10; HYDROGEN; ION PAIRS; IONIZATION; LIFETIME; MEV RANGE 01-10; PLASMA; POTENTIALS