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Thermal desorption of deuterium from polycrystalline nickel pre-implanted with helium

Technical Report:

Abstract

The thermal desorption technique has been used to study the trapping of deuterium atoms in high-purity polycrystalline nickel pre-implanted with helium for 1 x 10{sup 19} to 5 x 10{sup 20} ions/m{sup 2}. The effect of post-implantation annealing at 703 K and 923 K on the desorption behavior was investigated. Measured values of the total amount of detrapped deuterium (Q{sub T}) and helium concentration were used in a computer simulation of the desorption curve. It was found that the simulation using one or two discrete trap energies resulted in an inadequate fit between the simulated and the measured data. Both experimental and simulation results are explained using a stress-field trapping model. The effective binding energy, E{sub b}{sup eff}, was estimated to be in the range of 0.4-0.6 eV. Deuterium charging was found to stimulate a release of helium at a relatively low temperature.
Authors:
Shi, S Q; Abramov, E; Thompson, D A; [1]  Smeltzer, W W [2] 
  1. McMaster Univ., Hamilton, ON (Canada). Dept. of Engineering Physics
  2. McMaster Univ., Hamilton, ON (Canada)
Publication Date:
Dec 31, 1990
Product Type:
Technical Report
Report Number:
CFFTP-G-9051
Reference Number:
SCA: 360106; 700480; PA: AIX-24:005298; SN: 93000930483
Resource Relation:
Other Information: PBD: [1990]
Subject:
36 MATERIALS SCIENCE; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DEUTERIUM; ADSORPTION; HELIUM; DESORPTION; FIRST WALL; ION IMPLANTATION; NICKEL; TRAPPING; 360106; 700480; RADIATION EFFECTS; COMPONENT DEVELOPMENT; MATERIALS STUDIES
OSTI ID:
10118710
Research Organizations:
Canadian Fusion Fuels Technology Project, Toronto, ON (Canada)
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: ON: DE93611026; TRN: CA9201003005298
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
[26] p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Shi, S Q, Abramov, E, Thompson, D A, and Smeltzer, W W. Thermal desorption of deuterium from polycrystalline nickel pre-implanted with helium. Canada: N. p., 1990. Web.
Shi, S Q, Abramov, E, Thompson, D A, & Smeltzer, W W. Thermal desorption of deuterium from polycrystalline nickel pre-implanted with helium. Canada.
Shi, S Q, Abramov, E, Thompson, D A, and Smeltzer, W W. 1990. "Thermal desorption of deuterium from polycrystalline nickel pre-implanted with helium." Canada.
@misc{etde_10118710,
title = {Thermal desorption of deuterium from polycrystalline nickel pre-implanted with helium}
author = {Shi, S Q, Abramov, E, Thompson, D A, and Smeltzer, W W}
abstractNote = {The thermal desorption technique has been used to study the trapping of deuterium atoms in high-purity polycrystalline nickel pre-implanted with helium for 1 x 10{sup 19} to 5 x 10{sup 20} ions/m{sup 2}. The effect of post-implantation annealing at 703 K and 923 K on the desorption behavior was investigated. Measured values of the total amount of detrapped deuterium (Q{sub T}) and helium concentration were used in a computer simulation of the desorption curve. It was found that the simulation using one or two discrete trap energies resulted in an inadequate fit between the simulated and the measured data. Both experimental and simulation results are explained using a stress-field trapping model. The effective binding energy, E{sub b}{sup eff}, was estimated to be in the range of 0.4-0.6 eV. Deuterium charging was found to stimulate a release of helium at a relatively low temperature.}
place = {Canada}
year = {1990}
month = {Dec}
}