Modeling of beryllium deposition from a beryllium-seeded deuterium plasma
- Max-Planck-Institut fuer Plasmaphysik, Boltzmannstrasse 2, D-85748 Garching (Germany)
This paper is concerned with modeling the formation of beryllium (Be) layers deposited from a Be-seeded deuterium (D) plasma. In recent experiments at the PISCES-B divertor simulator [Y. Hirooka et al., J. Vac. Sci. Technol. A 8, 1790 (1990)] at UC-San Diego, C targets biased at -50 V were exposed to a Be-seeded D plasma in the temperature range from 500 to 1280 K and Be plasma concentrations in the range from 0.01% to 0.4%. It was found in [K. Schmid, M. Baldwin, R. Doetner, and A. Wiltner, Nucl. Fusion 44, 815 (2004)] that even at these low Be concentrations the C samples become covered with a shielding Be layer which almost eliminates chemical and physical erosions of the C sample in the observed target temperature range. Three different approaches were used to model these experimental results: the well-established binary collision Monte Carlo code TRIDYN [W. Moeller, W. E. Und, and J. P. Biersack, Comput. Phys. Commun. 51, 355 (1988)], the recently developed plasma surface interaction code GWAR, and analytical expressions were compared. The paper explains the details of the developed models and how their results compare to the experiment.
- OSTI ID:
- 20668262
- Journal Information:
- Journal of Applied Physics, Vol. 97, Issue 6; Other Information: DOI: 10.1063/1.1862309; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Next generation of extreme-resolution electron beam lithography
Modelling of edge plasma dynamics with active wall boundary conditions
Related Subjects
BERYLLIUM
COMPARATIVE EVALUATIONS
DEPOSITION
DEUTERIUM
DIVERTORS
EROSION
MONTE CARLO METHOD
PLASMA
PLASMA DENSITY
PLASMA IMPURITIES
PLASMA SIMULATION
SHIELDING
SIMULATORS
SURFACES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
THERMONUCLEAR REACTOR MATERIALS
THIN FILMS
WALL EFFECTS