Cascade and subcascade structure in fission neutron irradiated fcc metals and their correlation to fusion neutron irradiation

Y. Satoh; M. Tsukada; H. Matsui; T. Yoshiie

doi:10.1016/j.jnucmat.2004.04.265

Cascade and subcascade structure in fission neutron irradiated fcc metals and their correlation to fusion neutron irradiation

Y. Satoh, M. Tsukada, H. Matsui, T. Yoshiie

Materials Design Division

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

Thin foil specimens of Cu and Au were irradiated with fission neutrons at 285-295 K to neutron fluences of 7×10²¹ nm^-2 (>0.1 MeV), using the Kyoto University Reactor. The structure of cascades and subcascades was examined by fitting the experimentally observed distribution of vacancy-type defect clusters to the calculated primary recoil energy spectrum, and was compared directly with that for fusion neutron irradiation. In Cu, 70% of cascades consist of only one defect cluster and 2% of more than four clusters. This is in contrast to larger cascades produced by 14 MeV neutrons that contain more than 10 clusters and extend 60 nm in diameter. The subcascade energy was 18 and 15 keV for Cu and Au, respectively. These values are about 30-60% higher than those obtained for fusion neutron irradiation.

Original language	English
Pages (from-to)	1185-1189
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	329-333
Issue number	1-3 PART B
DOIs	https://doi.org/10.1016/j.jnucmat.2004.04.265
Publication status	Published - 2004 Aug 1
Event	Proceedings of the 11th Conference on Fusion Research - Kyoto, Japan Duration: 2003 Dec 7 → 2003 Dec 12

ASJC Scopus subject areas

Nuclear and High Energy Physics
Materials Science(all)
Nuclear Energy and Engineering

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10.1016/j.jnucmat.2004.04.265

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title = "Cascade and subcascade structure in fission neutron irradiated fcc metals and their correlation to fusion neutron irradiation",

abstract = "Thin foil specimens of Cu and Au were irradiated with fission neutrons at 285-295 K to neutron fluences of 7×1021 nm-2 (>0.1 MeV), using the Kyoto University Reactor. The structure of cascades and subcascades was examined by fitting the experimentally observed distribution of vacancy-type defect clusters to the calculated primary recoil energy spectrum, and was compared directly with that for fusion neutron irradiation. In Cu, 70% of cascades consist of only one defect cluster and 2% of more than four clusters. This is in contrast to larger cascades produced by 14 MeV neutrons that contain more than 10 clusters and extend 60 nm in diameter. The subcascade energy was 18 and 15 keV for Cu and Au, respectively. These values are about 30-60% higher than those obtained for fusion neutron irradiation.",

author = "Y. Satoh and M. Tsukada and H. Matsui and T. Yoshiie",

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TY - JOUR

T1 - Cascade and subcascade structure in fission neutron irradiated fcc metals and their correlation to fusion neutron irradiation

AU - Satoh, Y.

AU - Tsukada, M.

AU - Matsui, H.

AU - Yoshiie, T.

PY - 2004/8/1

Y1 - 2004/8/1

N2 - Thin foil specimens of Cu and Au were irradiated with fission neutrons at 285-295 K to neutron fluences of 7×1021 nm-2 (>0.1 MeV), using the Kyoto University Reactor. The structure of cascades and subcascades was examined by fitting the experimentally observed distribution of vacancy-type defect clusters to the calculated primary recoil energy spectrum, and was compared directly with that for fusion neutron irradiation. In Cu, 70% of cascades consist of only one defect cluster and 2% of more than four clusters. This is in contrast to larger cascades produced by 14 MeV neutrons that contain more than 10 clusters and extend 60 nm in diameter. The subcascade energy was 18 and 15 keV for Cu and Au, respectively. These values are about 30-60% higher than those obtained for fusion neutron irradiation.

AB - Thin foil specimens of Cu and Au were irradiated with fission neutrons at 285-295 K to neutron fluences of 7×1021 nm-2 (>0.1 MeV), using the Kyoto University Reactor. The structure of cascades and subcascades was examined by fitting the experimentally observed distribution of vacancy-type defect clusters to the calculated primary recoil energy spectrum, and was compared directly with that for fusion neutron irradiation. In Cu, 70% of cascades consist of only one defect cluster and 2% of more than four clusters. This is in contrast to larger cascades produced by 14 MeV neutrons that contain more than 10 clusters and extend 60 nm in diameter. The subcascade energy was 18 and 15 keV for Cu and Au, respectively. These values are about 30-60% higher than those obtained for fusion neutron irradiation.

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SN - 0022-3115

VL - 329-333

SP - 1185

EP - 1189

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3 PART B

T2 - Proceedings of the 11th Conference on Fusion Research

Y2 - 7 December 2003 through 12 December 2003

ER -

Cascade and subcascade structure in fission neutron irradiated fcc metals and their correlation to fusion neutron irradiation

Abstract

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