Photodetachment of theCa−ion at the3Pkpthreshold
| العنوان: | Photodetachment of theCa−ion at the3Pkpthreshold |
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| المؤلفون: | U. Berzinsh, D. J. Pegg, Dag Hanstorp, D. H. Lee, M.B. Poston |
| المصدر: | Physical Review A. 60:715-718 |
| بيانات النشر: | American Physical Society (APS), 1999. |
| سنة النشر: | 1999 |
| مصطلحات موضوعية: | Physics, Range (particle radiation), media_common.quotation_subject, Electron, Atomic physics, Photon energy, Absolute scale, Asymmetry, Atomic and Molecular Physics, and Optics, Beam (structure), Energy (signal processing), Ion, media_common |
| الوصف: | A crossed laser-ion beam apparatus has been used to spectroscopically analyze electrons detached from an 80-keV beam of Ca{sup {minus}} ions at a photon energy of 1.903 eV. At this energy only the {sup 1}Sthinspks,d photodetachment channel is open. The photon flux dependence and the angular dependence of the measured electron yield were used to determine the photodetachment cross section {sigma}=48(11) Mb and the asymmetry parameter {beta}=0.90(3), respectively. The measured cross section is in significant disagreement with a recent {ital R}-matrix calculation. The present measurement has been used to establish an absolute scale for previous relative total cross-section data over a photon energy range 1.1{endash}3.1 eV. thinsp {copyright} {ital 1999} {ital The American Physical Society} |
| تدمد: | 1094-1622 1050-2947 |
| DOI: | 10.1103/physreva.60.715 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::339b8d793048389764078f04386f8902 https://doi.org/10.1103/physreva.60.715 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........339b8d793048389764078f04386f8902 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10941622 10502947 |
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| DOI: | 10.1103/physreva.60.715 |