| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2026-02-05 |
| タイトル |
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タイトル |
Quantitative analysis of Fe ion interactions with the negative pressure phase of ultrasound pulses in water |
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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 |
Masanori Kobayashi
Osamu Okudaira
Shikazono Naoya
Kazuhiro Terasawa
Kodaira Satoshi
Nagaya Okada
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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 |
We investigated heavy-ion irradiation and ultrasound interactions in water by simultaneously applying a 500 MeV n−1 Fe-ion beam and pulsed ultrasound. Bright, point-like echoes were repeatedly observed near the Bragg peak, suggesting that radiation-induced microscopic voids serve as nuclei for cavitation during the ultrasound pulse’s negative-pressure phase. To interpret this phenomenon, we developed a probabilistic model based on the spatial overlap between the ion stopping distribution and the ultrasound field’s negative-pressure region. The model qualitatively reproduces the depth distribution and the number of observed bright spots, supporting the hypothesis of radiation-induced cavitation. These results indicate that high linear energy transfer irradiation-induced nanoscale void formation can substantially lower the effective cavitation threshold. This study provides a new perspective on coupled radiation–acoustic phenomena and offers a potential pathway for acoustic visualization of radiation-induced structural changes in liquids. |
| 書誌情報 |
JAPANESE JOURNAL OF APPLIED PHYSICS
巻 65,
p. 02SP20,
発行日 2026-02
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| 出版者 |
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出版者 |
IOP Publishing |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1347-4065 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.35848/1347-4065/ae3576 |
