Trapping of sub-eV hydrogen and deuterium atoms in carbon
Experimental results are presented on the trapping of sub-eV hydrogen and deuterium atoms in pyrolytic graphite (irradiated in the c direction) and papyex. Measurements were made by thermal desorption spectrometry, with the D(/sup 3/He,p)/sup 4/He nuclear reaction analysis being used in some cases to check the validity of the thermal desorption results. Although some variation exists in the magnitude of trapped fluences for the different cases studied, the shapes of the trapped fluence vs. incident fluence curves are similar. The trapped fluences of sub eV D/sup 0/ are about an order of magnitude lower than those obtained for 50 eV D/sup +/ ions, with a trend to saturation for fluences > 2 x 10/sup 19//cm/sup 2/.
- Research Organization:
- Toronto Univ., Ontario (Canada). Inst. for Aerospace Studies; Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5784835
- Report Number(s):
- SAND-83-1028C; CONF-830942-11; ON: DE84000051
- Country of Publication:
- United States
- Language:
- English
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ATOMS
CARBON
DEUTERIUM
DIFFUSION
ELEMENTAL MINERALS
ELEMENTS
FIRST WALL
GRAPHITE
HYDROGEN
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
MINERALS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
PERMEABILITY
RECYCLING
STABLE ISOTOPES
THERMONUCLEAR REACTOR WALLS