Neutralization of H{sup {minus}} beams in {open_quotes}plasma-neutralizers{close_quotes}

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:199757

Melchert, F ^[1]

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1. Kansas State Univ., Manhattan, KS (United States)

Employing the Giessen ion-ion crossed-beams apparatus, the authors have investigated the one- and two-electron detachment processes from H{sup {minus}} in collisions with multiply-charged noble gas ions. For both processes, absolute cross sections have been measured in the center-of-mass energy range from 50 keV to 200 keV. Different target ion species have been used as well as different target ion charge states q ranging up to q=8. The data are compared to the results of recent theoretical approaches. Based on the provided data, estimations have been made for the expected neutralization efficiencies of H{sup {minus}} ion beams in a so called {open_quotes}plasma-neutralizer{close_quotes} prospected for efficient neutral beam beating of future fusion devices. The results are discussed with respect to the incident H{sup {minus}} beam energy, the target charge states and the degree of ionization in a partially ionized target plasma.

• OSTI ID: 199757
• Report Number(s): CONF-941129--; CNN: Contract 06 GI 303
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM NEUTRALIZATION
ELECTRON DETACHMENT
HYDROGEN 1 MINUS BEAMS
ION-ION COLLISIONS
IONIZED GASES
KEV RANGE 10-100
KEV RANGE 100-1000
RARE GASES