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

Shi San-Qiang; E. Abramov; D. A. Thompson; W. W. Smeltzer

doi:10.1016/0022-3115(91)90422-4

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

Shi San-Qiang, E. Abramov, D. A. Thompson, W. W. Smeltzer

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The thermal desorption technique has been used to study the trapping of deuterium atoms in high-purity polycrystalline nickel pre-implanted with helium from 1 × 10¹⁹ to 5 × 10²⁰ ions/m². 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_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. The binding mechanism is discussed. An effective binding energy, E_b^eff, was estimated to be in the range of 0.4-0.6 eV. Deuterium charging appears to stimulate a release of helium at a relatively low temperature.

Original language	English
Pages (from-to)	128-134
Number of pages	7
Journal	Journal of Nuclear Materials
Volume	182
Issue number	C
DOIs	https://doi.org/10.1016/0022-3115(91)90422-4
State	Published - 1 Jan 1991
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

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10.1016/0022-3115(91)90422-4

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title = "Thermal desorption of deuterium from polycrystalline nickel pre-implanted with helium",

abstract = "The thermal desorption technique has been used to study the trapping of deuterium atoms in high-purity polycrystalline nickel pre-implanted with helium from 1 × 1019 to 5 × 1020 ions/m2. 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 (QT) 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. The binding mechanism is discussed. An effective binding energy, Ebeff, was estimated to be in the range of 0.4-0.6 eV. Deuterium charging appears to stimulate a release of helium at a relatively low temperature.",

author = "Shi San-Qiang and E. Abramov and Thompson, {D. A.} and Smeltzer, {W. W.}",

note = "Funding Information: We would like to thank Mr. B. McClelland for the head-impl~~tions. We would also like to expresso ur gratitude to the Canadian Fusion Fuels Technology Project (CFFTP) and the Natural Sciencesa nd En-gineeringR esearchC ouncil of Canada for funding this research.",

year = "1991",

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doi = "10.1016/0022-3115(91)90422-4",

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journal = "Journal of Nuclear Materials",

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T1 - Thermal desorption of deuterium from polycrystalline nickel pre-implanted with helium

AU - San-Qiang, Shi

AU - Abramov, E.

AU - Thompson, D. A.

AU - Smeltzer, W. W.

N1 - Funding Information: We would like to thank Mr. B. McClelland for the head-impl~~tions. We would also like to expresso ur gratitude to the Canadian Fusion Fuels Technology Project (CFFTP) and the Natural Sciencesa nd En-gineeringR esearchC ouncil of Canada for funding this research.

PY - 1991/1/1

Y1 - 1991/1/1

N2 - The thermal desorption technique has been used to study the trapping of deuterium atoms in high-purity polycrystalline nickel pre-implanted with helium from 1 × 1019 to 5 × 1020 ions/m2. 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 (QT) 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. The binding mechanism is discussed. An effective binding energy, Ebeff, was estimated to be in the range of 0.4-0.6 eV. Deuterium charging appears to stimulate a release of helium at a relatively low temperature.

AB - The thermal desorption technique has been used to study the trapping of deuterium atoms in high-purity polycrystalline nickel pre-implanted with helium from 1 × 1019 to 5 × 1020 ions/m2. 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 (QT) 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. The binding mechanism is discussed. An effective binding energy, Ebeff, was estimated to be in the range of 0.4-0.6 eV. Deuterium charging appears to stimulate a release of helium at a relatively low temperature.

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U2 - 10.1016/0022-3115(91)90422-4

DO - 10.1016/0022-3115(91)90422-4

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AN - SCOPUS:0026153763

SN - 0022-3115

VL - 182

SP - 128

EP - 134

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - C

ER -

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

Abstract

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