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| ファイル | 記述 | サイズ | フォーマット | |
|---|---|---|---|---|
| PhysRevAccelBeams.20.073401.pdf | 1.95 MB | Adobe PDF | 見る/開く |
| タイトル: | Thermally assisted photoemission effect on CeB₆ and LaB₆ for application as photocathodes |
| 著者: | Torgasin, K. Morita, K. Zen, H. Masuda, K. Katsurayama, T. Murata, T. Suphakul, S. Yamashita, H. Nogi, T. Kii, T. Nagasaki, K. Ohgaki, H. |
| 著者名の別形: | 守田, 健一 全, 炳俊 増田, 開 桂山, 翼 村田, 智哉 山下, 大樹 野儀, 武志 紀井, 俊輝 長﨑, 百伸 大垣, 英明 |
| キーワード: | Photoemission Thermionic emission Electron sources Photoexcitation Thermal techniques Accelerators & Beams |
| 発行日: | Jul-2017 |
| 出版者: | American Physical Society |
| 誌名: | Physical Review Accelerators and Beams |
| 巻: | 20 |
| 号: | 7 |
| 論文番号: | 073401 |
| 抄録: | The thermally assisted photoemission (TAPE) effect was investigated for the hexaboride thermionic cathodes (LaB₆ and CeB₆). It was found that the quantum efficiency of these cathodes can be increased by raising the cathode temperature along with the thermionic emission. In addition both materials can emit a measurable photoemission current by being irradiated with a laser having a photon energy below the work function at sufficiently high cathode temperatures. Our measurements indicate that this process is linear. These results show the significance of the TAPE effect. An additional effect of cathode heating is surface cleaning. This effect was detected as the hysteresis of the quantum efficiency which can be observed by heating up and cooling down the cathode. This effect slightly changes the quantum efficiency but not as much as the TAPE effect. |
| 著作権等: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
| URI: | http://hdl.handle.net/2433/284746 |
| DOI(出版社版): | 10.1103/PhysRevAccelBeams.20.073401 |
| 出現コレクション: | 学術雑誌掲載論文等 |
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