| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-10-18 |
| タイトル |
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タイトル |
Measurements of displacement cross sections of metals for 120-GeV proton beam irradiation |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Yosuke Iwamoto
Matsuda Hiroki
Shin-ichiro Meigo
Katsuya Yonehara
Frederique Pellemoine
Zunping Liu
Kevin Lynch
Makoto Yoshida
Atsushi Yabuuchi
Toshimasa Yoshiie
Shintaro Hashimoto
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The number of displacements per atom (dpa) is widely used as an indicator of irradiation damage of materials in proton accelerator facilities. Experiments have been carried out to validate the dpa of metallic materials for protons with energies below 3 GeV. However, measurements of the displacement cross-sections for high-energy protons above 3 GeV have not been carried out and the calculations have not been validated. To validate the displacement cross section of metals in high-energy region, electrical resistivity changes in wires of aluminum, copper and tungsten at 8 K were measured using protons with energies of 120-GeV. The results show that the Norgett-Robinson-Torrens dpa model of the Particle and Heavy Ion Transport Calculation Code overestimates the experimental data. On the other hand, the calculated results using the athermal recombination corrected dpa model were in agreement with the measured displacement cross sections. In the proton energy region above 1 GeV, the displacement cross section is almost constant, which is due to the fact that the damage energy of the material under 1 GeV proton irradiation is almost the same as under 120 GeV proton irradiation. Damage recovery of defects accumulated in the sample was also measured using isochronal annealing: At 80 K, approximately 60 % and 80 % of the damage remains for copper and tungsten, respectively. These results are the same as those obtained from other experiments on proton and neutron irradiation. |
| 書誌情報 |
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
巻 557,
発行日 2024-12
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| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1016/j.nimb.2024.165543 |
