Time-of-flight electron scattering from molecular hydrogen: Benchmark cross sections for excitation of the X 1 Sg+ ?b 3 Su+ transition
© 2018 American Physical Society. The electron impact X1Sg+?b3Su+ transition in molecular hydrogen is one of the most important dissociation pathways to forming atomic hydrogen atoms, and is of great importance in modeling astrophysical and industrial plasmas where molecular hydrogen is a substantia...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal Article |
| Published: |
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/68999 |
| _version_ | 1848761941552529408 |
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| author | Zawadzki, M. Wright, R. Dolmat, G. Martin, M. Hargreaves, L. Fursa, Dmitry Zammit, M. Scarlett, L. Tapley, J. Savage, J. Bray, Igor Khakoo, M. |
| author_facet | Zawadzki, M. Wright, R. Dolmat, G. Martin, M. Hargreaves, L. Fursa, Dmitry Zammit, M. Scarlett, L. Tapley, J. Savage, J. Bray, Igor Khakoo, M. |
| author_sort | Zawadzki, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 American Physical Society. The electron impact X1Sg+?b3Su+ transition in molecular hydrogen is one of the most important dissociation pathways to forming atomic hydrogen atoms, and is of great importance in modeling astrophysical and industrial plasmas where molecular hydrogen is a substantial constituent. Recently, it has been found that the convergent close-coupling (CCC) cross sections of Zammit et al. [Phys. Rev. A 95, 022708 (2017)10.1103/PhysRevA.95.022708] are up to a factor of 2 smaller than the currently recommended data. We have determined normalized differential cross sections for excitation of this transition from our experimental ratios of the inelastic to elastic scattering of electrons by molecular hydrogen using a transmission-free time-of-flight electron spectrometer, and find excellent agreement with the CCC calculations. Since there is already excellent agreement for the absolute elastic differential cross sections, we establish benchmark differential and integrated cross sections for the X1Sg+?b3Su+ transition, with theory and experiment being essentially in complete agreement. |
| first_indexed | 2025-11-14T10:39:40Z |
| format | Journal Article |
| id | curtin-20.500.11937-68999 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:39:40Z |
| publishDate | 2018 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-689992018-06-29T12:35:25Z Time-of-flight electron scattering from molecular hydrogen: Benchmark cross sections for excitation of the X 1 Sg+ ?b 3 Su+ transition Zawadzki, M. Wright, R. Dolmat, G. Martin, M. Hargreaves, L. Fursa, Dmitry Zammit, M. Scarlett, L. Tapley, J. Savage, J. Bray, Igor Khakoo, M. © 2018 American Physical Society. The electron impact X1Sg+?b3Su+ transition in molecular hydrogen is one of the most important dissociation pathways to forming atomic hydrogen atoms, and is of great importance in modeling astrophysical and industrial plasmas where molecular hydrogen is a substantial constituent. Recently, it has been found that the convergent close-coupling (CCC) cross sections of Zammit et al. [Phys. Rev. A 95, 022708 (2017)10.1103/PhysRevA.95.022708] are up to a factor of 2 smaller than the currently recommended data. We have determined normalized differential cross sections for excitation of this transition from our experimental ratios of the inelastic to elastic scattering of electrons by molecular hydrogen using a transmission-free time-of-flight electron spectrometer, and find excellent agreement with the CCC calculations. Since there is already excellent agreement for the absolute elastic differential cross sections, we establish benchmark differential and integrated cross sections for the X1Sg+?b3Su+ transition, with theory and experiment being essentially in complete agreement. 2018 Journal Article http://hdl.handle.net/20.500.11937/68999 10.1103/PhysRevA.97.050702 restricted |
| spellingShingle | Zawadzki, M. Wright, R. Dolmat, G. Martin, M. Hargreaves, L. Fursa, Dmitry Zammit, M. Scarlett, L. Tapley, J. Savage, J. Bray, Igor Khakoo, M. Time-of-flight electron scattering from molecular hydrogen: Benchmark cross sections for excitation of the X 1 Sg+ ?b 3 Su+ transition |
| title | Time-of-flight electron scattering from molecular hydrogen: Benchmark cross sections for excitation of the X 1 Sg+ ?b 3 Su+ transition |
| title_full | Time-of-flight electron scattering from molecular hydrogen: Benchmark cross sections for excitation of the X 1 Sg+ ?b 3 Su+ transition |
| title_fullStr | Time-of-flight electron scattering from molecular hydrogen: Benchmark cross sections for excitation of the X 1 Sg+ ?b 3 Su+ transition |
| title_full_unstemmed | Time-of-flight electron scattering from molecular hydrogen: Benchmark cross sections for excitation of the X 1 Sg+ ?b 3 Su+ transition |
| title_short | Time-of-flight electron scattering from molecular hydrogen: Benchmark cross sections for excitation of the X 1 Sg+ ?b 3 Su+ transition |
| title_sort | time-of-flight electron scattering from molecular hydrogen: benchmark cross sections for excitation of the x 1 sg+ ?b 3 su+ transition |
| url | http://hdl.handle.net/20.500.11937/68999 |