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Determination of two-photon-excitation cross section for molecular isotope separation
https://repo.qst.go.jp/records/47691
https://repo.qst.go.jp/records/476915c8fe41e-4f3f-4c64-b642-7d0a56283424
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-03-27 | |||||
| タイトル | ||||||
| タイトル | Determination of two-photon-excitation cross section for molecular isotope separation | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Wakai, Atsushi
× Wakai, Atsushi× Tuchida, Kaduki× Fukumura, Toshimitsu× Iida, Hidehiro× Suzuki, Kazutoshi× 若井 篤志× 土田 一輝× 福村 利光× 飯田 秀博× 鈴木 和年 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We observed that the two-photon excitation of a v3 hot band (6s Rydberg ) in methyl iodide is promising for isotopic laser separation, because the isotope shift of the multiphoton ionization (MPI) resonance is resolvable. To estimate the excitation cross section, which gives the enrichment factor (final isotope ratio per initial isotope ratio) of the separation method, we devised a method based on a pump-probe MPI procedure. By probing the material remaining after irradiation with the pump pulse, we estimated the cross section of the ground-state transition (6s Rydberg 3;0-0) to be 4.1+/-1.4x10-48 (cm4 s). The enrichment factor predicted from this cross section indicates that a high-performance laser system (20 mJ/pulse, 200 Hz, 10 ns duration) was capable of achieving an enrichment of over 1000-fold in view of the dissociation efficiency under low-pressure gas conditions. Thus, laser separation (elimination) appears to be a promising tool to create positron-emission tomography molecular probes. \n -------------------------------------------------------------------------------- |
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| 書誌情報 |
Journal of Molecular Spectroscopy 巻 274, p. 14-21, 発行日 2012-03 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0022-2852 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | org/10.1016/j.jms.2012.03004 | |||||
