TY - JOUR
T1 - Synergistic effects between helium and hydrogen isotopes on gas detrapping in polycrystalline nickel
AU - Abramov, E.
AU - San-Qiang, Shi
AU - Thompson, D. A.
AU - Smeltzer, W. W.
N1 - Funding Information:
the Natural Sciences and Engineering Research Council of Canada for funding this research. One of us (E. Abramov) would also like to thank G. Lampert and his staff for the implantations of the samples at MEIRA. Soreq Nuclear Research Centre.
PY - 1991/12/2
Y1 - 1991/12/2
N2 - The thermal desorption and SEM techniques have been used to study the effects of the presence of deuterium and hydrogen atoms on the retention of implanted helium in polycrystalline nickel. For samples pre-implanted with 40 keV helium to a dose of 1 × 1021 ions/m2 the ratio of trapped deuterium atoms to the implanted helium was found to be about 0.4 D/He and an effective trapping energy ~ 0.5 eV was found. For samples pre-implanted with 10 keV He to doses from 1.5 × 1021 to 4 × 1021 ions/m2, low temperature helium release stages were observed, and resulted in a decrease of deuterium trapping efficiency to as low as 0.0075 D/He. Both deuterium and hydrogen charging were found to enhance the helium release and to decrease the release temperature. For the high dose samples, deuterium or hydrogen gas charging and thermal desorption were also found to induce blister growth and surface exfoliation.
AB - The thermal desorption and SEM techniques have been used to study the effects of the presence of deuterium and hydrogen atoms on the retention of implanted helium in polycrystalline nickel. For samples pre-implanted with 40 keV helium to a dose of 1 × 1021 ions/m2 the ratio of trapped deuterium atoms to the implanted helium was found to be about 0.4 D/He and an effective trapping energy ~ 0.5 eV was found. For samples pre-implanted with 10 keV He to doses from 1.5 × 1021 to 4 × 1021 ions/m2, low temperature helium release stages were observed, and resulted in a decrease of deuterium trapping efficiency to as low as 0.0075 D/He. Both deuterium and hydrogen charging were found to enhance the helium release and to decrease the release temperature. For the high dose samples, deuterium or hydrogen gas charging and thermal desorption were also found to induce blister growth and surface exfoliation.
UR - http://www.scopus.com/inward/record.url?scp=0026414714&partnerID=8YFLogxK
U2 - 10.1016/0022-3115(91)90353-9
DO - 10.1016/0022-3115(91)90353-9
M3 - Article
AN - SCOPUS:0026414714
SN - 0022-3115
VL - 186
SP - 61
EP - 67
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1
ER -