Trapping of deuterium in helium-damaged steels: he+ fluence dependence

K. L. Wilson; A. E. Pontau; L. G. Haggmark; Michael I Baskes; J. Bohdansky; J. Roth

doi:10.1016/0022-3115(82)90646-8

Trapping of deuterium in helium-damaged steels: he⁺ fluence dependence

K. L. Wilson
, A. E. Pontau
, L. G. Haggmark
, Michael I Baskes
, J. Bohdansky
, J. Roth

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

22 Scopus citations

Abstract

Deuterium trapping characteristics of 304 LN and 12R72HV stainless steel have been measured as a function of He⁺ predamage fluence with 8 keV He⁺. Nuclear reaction analyses of the near surface deuterium with the D³He, αH and D(³He, p)⁴He reactions show that the deuterium saturation concentration increases with increasing He⁺ fluence, up to a maximum concentration of ∼-0.06 deuterium/metal ratio for 10¹⁷ He⁺/cm² predamage fluence. At higher He⁺ predamage fluences, the saturation deuterium concentration decreases markedly, dropping to only ∼-0.02 deuterium/metal ratio with 10¹⁹ He⁺/cm² predamage fluence. This decrease in deuterium trapping at high He⁺ fluence is attributed to the formation of He-induced blisters and microporosity, lowering the number of traps, and also reducing the characteristic diffusion length from the trapped deuterium to the free surface.

Original language	English
Pages (from-to)	493-497
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	103
Issue number	C
DOIs	https://doi.org/10.1016/0022-3115(82)90646-8
State	Published - Jan 1 1981
Externally published	Yes

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title = "Trapping of deuterium in helium-damaged steels: he+ fluence dependence",

abstract = "Deuterium trapping characteristics of 304 LN and 12R72HV stainless steel have been measured as a function of He+ predamage fluence with 8 keV He+. Nuclear reaction analyses of the near surface deuterium with the D3He, αH and D(3He, p)4He reactions show that the deuterium saturation concentration increases with increasing He+ fluence, up to a maximum concentration of ∼-0.06 deuterium/metal ratio for 1017 He+/cm2 predamage fluence. At higher He+ predamage fluences, the saturation deuterium concentration decreases markedly, dropping to only ∼-0.02 deuterium/metal ratio with 1019 He+/cm2 predamage fluence. This decrease in deuterium trapping at high He+ fluence is attributed to the formation of He-induced blisters and microporosity, lowering the number of traps, and also reducing the characteristic diffusion length from the trapped deuterium to the free surface.",

author = "Wilson, \{K. L.\} and Pontau, \{A. E.\} and Haggmark, \{L. G.\} and Baskes, \{Michael I\} and J. Bohdansky and J. Roth",

year = "1981",

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doi = "10.1016/0022-3115(82)90646-8",

language = "English",

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}

TY - JOUR

T1 - Trapping of deuterium in helium-damaged steels

T2 - he+ fluence dependence

AU - Wilson, K. L.

AU - Pontau, A. E.

AU - Haggmark, L. G.

AU - Baskes, Michael I

AU - Bohdansky, J.

AU - Roth, J.

PY - 1981/1/1

Y1 - 1981/1/1

N2 - Deuterium trapping characteristics of 304 LN and 12R72HV stainless steel have been measured as a function of He+ predamage fluence with 8 keV He+. Nuclear reaction analyses of the near surface deuterium with the D3He, αH and D(3He, p)4He reactions show that the deuterium saturation concentration increases with increasing He+ fluence, up to a maximum concentration of ∼-0.06 deuterium/metal ratio for 1017 He+/cm2 predamage fluence. At higher He+ predamage fluences, the saturation deuterium concentration decreases markedly, dropping to only ∼-0.02 deuterium/metal ratio with 1019 He+/cm2 predamage fluence. This decrease in deuterium trapping at high He+ fluence is attributed to the formation of He-induced blisters and microporosity, lowering the number of traps, and also reducing the characteristic diffusion length from the trapped deuterium to the free surface.

AB - Deuterium trapping characteristics of 304 LN and 12R72HV stainless steel have been measured as a function of He+ predamage fluence with 8 keV He+. Nuclear reaction analyses of the near surface deuterium with the D3He, αH and D(3He, p)4He reactions show that the deuterium saturation concentration increases with increasing He+ fluence, up to a maximum concentration of ∼-0.06 deuterium/metal ratio for 1017 He+/cm2 predamage fluence. At higher He+ predamage fluences, the saturation deuterium concentration decreases markedly, dropping to only ∼-0.02 deuterium/metal ratio with 1019 He+/cm2 predamage fluence. This decrease in deuterium trapping at high He+ fluence is attributed to the formation of He-induced blisters and microporosity, lowering the number of traps, and also reducing the characteristic diffusion length from the trapped deuterium to the free surface.

UR - https://www.scopus.com/pages/publications/49149136993

U2 - 10.1016/0022-3115(82)90646-8

DO - 10.1016/0022-3115(82)90646-8

M3 - Article

SN - 0022-3115

VL - 103

SP - 493

EP - 497

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - C

ER -

Trapping of deuterium in helium-damaged steels: he+ fluence dependence

Abstract

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Trapping of deuterium in helium-damaged steels: he⁺ fluence dependence