Simulation Studies of Hydrogen Ion reflection from Tungsten for the Surface Production of Negative Hydrogen Ions
- Doshisha University, Kyotanabe, Kyoto 610-0394 (Japan)
The production efficiency of negative ions at tungsten surface by particle reflection has been investigated. Angular distributions and energy spectra of reflected hydrogen ions from tungsten surface are calculated with a Monte Carlo simulation code ACAT. The results obtained with ACAT have indicated that angular distributions of reflected hydrogen ions show narrow distributions for low-energy incidence such as 50 eV, and energy spectra of reflected ions show sharp peaks around 90% of incident energy. These narrow angular distributions and sharp peaks are favorable for the efficient extraction of negative ions from an ion source equipped with tungsten surface as negative ionization converter. The retained hydrogen atoms in tungsten lead to the reduction in extraction efficiency due to boarded angular distributions.
- OSTI ID:
- 21611657
- Journal Information:
- AIP Conference Proceedings, Vol. 1390, Issue 1; Conference: 2. international symposium on negative ions, beams and sources, Takayama City (Japan), 16-19 Nov 2010; Other Information: DOI: 10.1063/1.3637383; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
43 PARTICLE ACCELERATORS
A CODES
ANGULAR DISTRIBUTION
ANIONS
ATOMS
COLLISIONS
COMPUTERIZED SIMULATION
ENERGY SPECTRA
EV RANGE
HYDROGEN
HYDROGEN IONS
ION SOURCES
IONIZATION
MONTE CARLO METHOD
PLASMA
REFLECTION
SURFACES
TUNGSTEN
CALCULATION METHODS
CHARGED PARTICLES
COMPUTER CODES
DISTRIBUTION
ELEMENTS
ENERGY RANGE
IONS
METALS
NONMETALS
REFRACTORY METALS
SIMULATION
SPECTRA
TRANSITION ELEMENTS