Enhanced selective hydrogen desorption from metals

Journal Article · Fri Apr 01 00:00:00 EST 1983 · J. Vac. Sci. Technol., A; (United States)

DOI:https://doi.org/10.1116/1.572087· OSTI ID:5861968

Knize, R J; Cecchi, J L

The thermal desorption of hydrogen isotopes from a metal is usually a second order process the rate for which becomes asymptotically slow. We present a method for enhancing the desorption rate of one particular isotope by maintaining a constant pressure of another molecular species. This results in an effective first order desorption and concommitant exponential decay of the concentration of the selected isotope. Data is presented for the enhanced desorption of deuterium from a Zr--Al getter. The results agree well with a theoretical model, which is discussed. This enhanced desorption method should be particularly useful for tritium operation in the tokamak fusion test reactor.

• Research Organization: Princeton University, Plasma Physics Laboratory, Princeton, New Jersey 08544
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 5861968
• Journal Information: J. Vac. Sci. Technol., A; (United States), Vol. 1:2
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
SORPTIVE PROPERTIES
DEUTERIUM
DESORPTION
GETTERS
OPTIMIZATION
HYDROGEN
ZIRCONIUM ALLOYS
TFTR REACTORS
ALLOYS
ELEMENTS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
ODD-ODD NUCLEI
STABLE ISOTOPES
SURFACE PROPERTIES
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
420700* - Engineering- Vacuum Engineering- (-1987)
360104 - Metals & Alloys- Physical Properties