Thermal desorption and bombardment-induced release of deuterium implanted into stainless steels at low energy

G. Farrell, S. E. Donnelly

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Thermal desorption spectra have been obtained for low energy (15-750 eV) deuterons implanted into types 321 and 304 stainless steel, to total fluences in the range 1013-1017 deuterons/cm2. In each case the spectra show a peak at about 350 K, but in the 321 steel there is a second peak in the region of 900 K, the population and peak temperature of which increase with energy. Activation energies of 0.99 and 2.39 eV and a rate constant of 7 × 1015/s have been derived for the peaks, and it is thought that the first peak corresponds to release from sites close to the surface, while the second peak may be related to trapping at impurities such as Ti. Measurements have also been made of the release of deuterium resulting from post-implantation bombardment with hydrogen ions. It is found that depletion of the first peak in the 321 steel is the result of gas sputtering, but depletion of the second peak is the result of the formation of HD during desorption, while depletion of the peak in the 304 stainless steel also results from HD formation even though this peak is the same as the first peak in the 321 steel. Estimates have also been made of the deuterium self-sputtering cross section at various energies, which show a monotonie decrease as energy increases.

Original languageEnglish
Pages (from-to)322-327
Number of pages6
JournalJournal of Nuclear Materials
Volume76-77
Issue numberC
DOIs
Publication statusPublished - 1 Sep 1978
Externally publishedYes

Fingerprint

Thermal desorption
Deuterium
Stainless Steel
bombardment
deuterium
stainless steels
Steel
Stainless steel
desorption
Sputtering
Ion implantation
energy
Rate constants
Desorption
Activation energy
Impurities
depletion
Protons
Hydrogen
steels

Cite this

@article{7a8ca01b66314615a753265275aca3b9,
title = "Thermal desorption and bombardment-induced release of deuterium implanted into stainless steels at low energy",
abstract = "Thermal desorption spectra have been obtained for low energy (15-750 eV) deuterons implanted into types 321 and 304 stainless steel, to total fluences in the range 1013-1017 deuterons/cm2. In each case the spectra show a peak at about 350 K, but in the 321 steel there is a second peak in the region of 900 K, the population and peak temperature of which increase with energy. Activation energies of 0.99 and 2.39 eV and a rate constant of 7 × 1015/s have been derived for the peaks, and it is thought that the first peak corresponds to release from sites close to the surface, while the second peak may be related to trapping at impurities such as Ti. Measurements have also been made of the release of deuterium resulting from post-implantation bombardment with hydrogen ions. It is found that depletion of the first peak in the 321 steel is the result of gas sputtering, but depletion of the second peak is the result of the formation of HD during desorption, while depletion of the peak in the 304 stainless steel also results from HD formation even though this peak is the same as the first peak in the 321 steel. Estimates have also been made of the deuterium self-sputtering cross section at various energies, which show a monotonie decrease as energy increases.",
author = "G. Farrell and Donnelly, {S. E.}",
year = "1978",
month = "9",
day = "1",
doi = "10.1016/0022-3115(78)90164-2",
language = "English",
volume = "76-77",
pages = "322--327",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
number = "C",

}

Thermal desorption and bombardment-induced release of deuterium implanted into stainless steels at low energy. / Farrell, G.; Donnelly, S. E.

In: Journal of Nuclear Materials, Vol. 76-77, No. C, 01.09.1978, p. 322-327.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Thermal desorption and bombardment-induced release of deuterium implanted into stainless steels at low energy

AU - Farrell, G.

AU - Donnelly, S. E.

PY - 1978/9/1

Y1 - 1978/9/1

N2 - Thermal desorption spectra have been obtained for low energy (15-750 eV) deuterons implanted into types 321 and 304 stainless steel, to total fluences in the range 1013-1017 deuterons/cm2. In each case the spectra show a peak at about 350 K, but in the 321 steel there is a second peak in the region of 900 K, the population and peak temperature of which increase with energy. Activation energies of 0.99 and 2.39 eV and a rate constant of 7 × 1015/s have been derived for the peaks, and it is thought that the first peak corresponds to release from sites close to the surface, while the second peak may be related to trapping at impurities such as Ti. Measurements have also been made of the release of deuterium resulting from post-implantation bombardment with hydrogen ions. It is found that depletion of the first peak in the 321 steel is the result of gas sputtering, but depletion of the second peak is the result of the formation of HD during desorption, while depletion of the peak in the 304 stainless steel also results from HD formation even though this peak is the same as the first peak in the 321 steel. Estimates have also been made of the deuterium self-sputtering cross section at various energies, which show a monotonie decrease as energy increases.

AB - Thermal desorption spectra have been obtained for low energy (15-750 eV) deuterons implanted into types 321 and 304 stainless steel, to total fluences in the range 1013-1017 deuterons/cm2. In each case the spectra show a peak at about 350 K, but in the 321 steel there is a second peak in the region of 900 K, the population and peak temperature of which increase with energy. Activation energies of 0.99 and 2.39 eV and a rate constant of 7 × 1015/s have been derived for the peaks, and it is thought that the first peak corresponds to release from sites close to the surface, while the second peak may be related to trapping at impurities such as Ti. Measurements have also been made of the release of deuterium resulting from post-implantation bombardment with hydrogen ions. It is found that depletion of the first peak in the 321 steel is the result of gas sputtering, but depletion of the second peak is the result of the formation of HD during desorption, while depletion of the peak in the 304 stainless steel also results from HD formation even though this peak is the same as the first peak in the 321 steel. Estimates have also been made of the deuterium self-sputtering cross section at various energies, which show a monotonie decrease as energy increases.

UR - http://www.scopus.com/inward/record.url?scp=0018048608&partnerID=8YFLogxK

U2 - 10.1016/0022-3115(78)90164-2

DO - 10.1016/0022-3115(78)90164-2

M3 - Article

VL - 76-77

SP - 322

EP - 327

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - C

ER -