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Time-of-flight electron scattering from molecular hydrogen: Benchmark cross sections for excitation of the X1Σ+g→b3Σ+u transition
Abstrakt
The electron impact X1Σ+g to b3Σ+u 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)] are up to a factor of two smaller than the currently recommended data. We have performed measurements of differential cross sections as ratios of the excitation to elastic scattering 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 new recommended differential and integrated cross sections with theory and experiment being essentially in complete agreement- unprecedented for differential electron impact excitation of any molecular transition to date.
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Autorzy (12)
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Robert Wright
- California State University, Fullerton
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Grant Dolmat
- California State University, Fullerton
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Merl Martin
- California State University, Fullerton
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Leigh Hargreaves
- California State University, Fullerton
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Dmitry Fursa
- Curtin University
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Mark Zammit
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Liam Scarlett
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Jonathan Tapley
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Jeremy Savage
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Igor Bray
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Murtadha Khakoo
- California State University, Fullerton
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Pełna treść
- Wersja publikacji
- Accepted albo Published Version
- Licencja
- Copyright (2018 American Physical Society)
Słowa kluczowe
Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuł w czasopiśmie wyróżnionym w JCR
- Opublikowano w:
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PHYSICAL REVIEW A
nr 97,
wydanie 5,
strony 1 - 6,
ISSN: 2469-9926 - Język:
- angielski
- Rok wydania:
- 2018
- Opis bibliograficzny:
- Zawadzki M., Wright R., Dolmat G., Martin M., Hargreaves L., Fursa D., Zammit M., Scarlett L., Tapley J., Savage J., Bray I., Khakoo M.: Time-of-flight electron scattering from molecular hydrogen: Benchmark cross sections for excitation of the X1Σ+g→b3Σ+u transition// PHYSICAL REVIEW A. -Vol. 97, iss. 5 (2018), s.1-6
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1103/physreva.97.050702
- Źródła finansowania:
-
- Stypendium Fulbrighta
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 173 razy
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