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Direct Concentration Measurement of Hydrogen Electromigration Using Nuclear Reaction Analysis

Published online by Cambridge University Press:  22 February 2011

R. E. Benenson ,
P. Berning  and
L. Wielunski
R. E. Benenson
Affiliation:
Department of Physics, SUNY at Albany, 1400 Washington Avenue, Albany, N.Y. 12222
P. Berning
Affiliation:
Department of Physics, SUNY at Albany, 1400 Washington Avenue, Albany, N.Y. 12222
L. Wielunski
Affiliation:
Department of Physics, SUNY at Albany, 1400 Washington Avenue, Albany, N.Y. 12222
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Abstract

Lateral concentration profiles of hydrogen (1H) have been measured using nuclear recoil analysis on electrolytically charged metal (V, Nb, Ta) foils subjected to current densities of order 103 amps/cm2 for various times in order to study the electromigration of hydrogen. Initially uniformly loaded foils exhibited a dramatic redistribution of the hydrogen. Numerical analysis of these data using the conventional solution of the electromigration equation is used to extract the hydrogen effective charge (Z*) from the steady state data and the diffusion coefficient from the time-dependent data. The nuclear technique permits rapid and accurate direct concentration measurements capable of distinguishing surface and subsurface transport.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 40: Symposium J – Electronic Packaging Materials Science I , 1984 , 335
Copyright
Copyright © Materials Research Society 1985

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