Electron-impact coherence parameters for electron-impact excitation of laser-excited 174Yb (. . . 6s6p 3P1)
We have measured and calculated the P3 collision Stokes parameter for electron-impact collisional de-excitation to the ytterbium (. . . 6s6p 3P1) level from the higher-lying 1P1, 3D1,2,3 and 3S1 levels for 20 eV residual energy. These processes are the time-reverse of the experimentally measured pro...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Institute of Physics Publishing Ltd.
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/40649 |
| _version_ | 1848755928026841088 |
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| author | Hein, J. Kidwai, S. Zetner, P. Bostock, Christopher Fursa, Dmitry Bray, Igor Sharma, L. Srivastava, R. Stauffer, A. |
| author_facet | Hein, J. Kidwai, S. Zetner, P. Bostock, Christopher Fursa, Dmitry Bray, Igor Sharma, L. Srivastava, R. Stauffer, A. |
| author_sort | Hein, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We have measured and calculated the P3 collision Stokes parameter for electron-impact collisional de-excitation to the ytterbium (. . . 6s6p 3P1) level from the higher-lying 1P1, 3D1,2,3 and 3S1 levels for 20 eV residual energy. These processes are the time-reverse of the experimentally measured processes, where an impact energy of 20 eV was used to collisionally excite the 3P1 target, prepared by resonant laser pumping. Measurements were performed using a crossed-beam apparatus, where excited-state atomic targets were produced using resonant laser radiation incident on the electron–atom interaction region. Calculations were performed in the relativistic convergent close-coupling , convergent close-coupling and relativistic distorted-wave approximations. The theoretical calculations show that the helectron-impact coherence parameter (EICP) is equal to 1/2, independent of the scattering angle. We use this result to present the L! EICP for the (. . . 6s7s 3S1)-->(. . . 6s6p 3P1) collision process. |
| first_indexed | 2025-11-14T09:04:05Z |
| format | Journal Article |
| id | curtin-20.500.11937-40649 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:04:05Z |
| publishDate | 2011 |
| publisher | Institute of Physics Publishing Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-406492017-09-13T15:59:41Z Electron-impact coherence parameters for electron-impact excitation of laser-excited 174Yb (. . . 6s6p 3P1) Hein, J. Kidwai, S. Zetner, P. Bostock, Christopher Fursa, Dmitry Bray, Igor Sharma, L. Srivastava, R. Stauffer, A. We have measured and calculated the P3 collision Stokes parameter for electron-impact collisional de-excitation to the ytterbium (. . . 6s6p 3P1) level from the higher-lying 1P1, 3D1,2,3 and 3S1 levels for 20 eV residual energy. These processes are the time-reverse of the experimentally measured processes, where an impact energy of 20 eV was used to collisionally excite the 3P1 target, prepared by resonant laser pumping. Measurements were performed using a crossed-beam apparatus, where excited-state atomic targets were produced using resonant laser radiation incident on the electron–atom interaction region. Calculations were performed in the relativistic convergent close-coupling , convergent close-coupling and relativistic distorted-wave approximations. The theoretical calculations show that the helectron-impact coherence parameter (EICP) is equal to 1/2, independent of the scattering angle. We use this result to present the L! EICP for the (. . . 6s7s 3S1)-->(. . . 6s6p 3P1) collision process. 2011 Journal Article http://hdl.handle.net/20.500.11937/40649 10.1088/0953-4075/44/7/075201 Institute of Physics Publishing Ltd. restricted |
| spellingShingle | Hein, J. Kidwai, S. Zetner, P. Bostock, Christopher Fursa, Dmitry Bray, Igor Sharma, L. Srivastava, R. Stauffer, A. Electron-impact coherence parameters for electron-impact excitation of laser-excited 174Yb (. . . 6s6p 3P1) |
| title | Electron-impact coherence parameters for electron-impact excitation of laser-excited 174Yb (. . . 6s6p 3P1) |
| title_full | Electron-impact coherence parameters for electron-impact excitation of laser-excited 174Yb (. . . 6s6p 3P1) |
| title_fullStr | Electron-impact coherence parameters for electron-impact excitation of laser-excited 174Yb (. . . 6s6p 3P1) |
| title_full_unstemmed | Electron-impact coherence parameters for electron-impact excitation of laser-excited 174Yb (. . . 6s6p 3P1) |
| title_short | Electron-impact coherence parameters for electron-impact excitation of laser-excited 174Yb (. . . 6s6p 3P1) |
| title_sort | electron-impact coherence parameters for electron-impact excitation of laser-excited 174yb (. . . 6s6p 3p1) |
| url | http://hdl.handle.net/20.500.11937/40649 |