Laser desorption study of deuterium implanted in beryllium

Pulsed laser desorption was used to investigate the reemission of deuterium implanted in beryllium. The amount of D 2 molecules released as a function of the laser energy density was measured on samples with different implantation energies and doses. Numerical modelling of our results indicates that...

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Bibliographic Details
Published in:Journal of nuclear materials 1994-09, Vol.212, p.1443-1447
Main Authors: Kéroack, D., Terreault, B.
Format: Article
Language:English
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Summary:Pulsed laser desorption was used to investigate the reemission of deuterium implanted in beryllium. The amount of D 2 molecules released as a function of the laser energy density was measured on samples with different implantation energies and doses. Numerical modelling of our results indicates that detrapping and diffusion are the limiting processes. The data are best fitted with second order detrapping with a trap energy of 1.7 ± 0.1 eV and the effective diffusion coefficient is described by the equation D = (8 ± 1) × 10 −8 exp(− 0.32 ± 0.02 eV/ kT) m 2 s −1.
ISSN:0022-3115
1873-4820
DOI:10.1016/0022-3115(94)91066-9