Calculation of neutral beam deposition accounting for excited states
Large-scale neutral-beam auxillary heating of plasmas has led to new plasma operational regimes which are often dominated by fast ions injected via the absorption of an energetic beam of hydrogen neutrals. An accurate simulation of the slowing down and transport of these fast ions requires an intimate knowledge of the hydrogenic neutral deposition on each flux surface of the plasma. As a refinement to the present generation of transport codes, which base their beam deposition on ground-state reaction rates, a new set of routines, based on the excited states of hydrogen, is presented as mechanism for computing the attenuation and deposition of a beam of energetic neutrals. Additionally, the numerical formulations for the underlying atomic physics for hydrogen impacting on the constiuent plasma species is developed and compiled as a numerical database. Sample results based on this excited state model are compared with the ground-state model for simple plasma configurations.
- Research Organization:
- Wisconsin Univ., Madison, WI (United States). Dept. of Nuclear Engineering and Engineering Physics
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-86ER53218
- OSTI ID:
- 10184287
- Report Number(s):
- UW-CPTC-92-4; ON: DE93002353
- Resource Relation:
- Other Information: PBD: Sep 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
BEAM INJECTION HEATING
COMPUTER CODES
TOKAMAK DEVICES
EXCITED STATES
NEUTRAL ATOM BEAM INJECTION
PLASMA SIMULATION
CROSS SECTIONS
IONIZATION
700460
990200
700380
HEATING AND FUELING SYSTEMS
FUELS
MATHEMATICS AND COMPUTERS
ELEMENTARY AND CLASSICAL PROCESSES IN PLASMAS