Measurement and analysis of blue shift on the helium 492.2 nm line in a liquid corona discharge
| Autor: | Joël Rosato, N. Bonifaci |
|---|---|
| Přispěvatelé: | Physique des interactions ioniques et moléculaires (PIIM), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Laboratoire de Génie Electrique de Grenoble (G2ELab ), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Radiation
Materials science 010504 meteorology & atmospheric sciences Liquid helium [SPI.NRJ]Engineering Sciences [physics]/Electric power chemistry.chemical_element 01 natural sciences Potential energy Atomic and Molecular Physics and Optics law.invention Blueshift Difference function chemistry law Singlet state Atomic physics Spectroscopy Helium Corona discharge 0105 earth and related environmental sciences Line (formation) |
| Zdroj: | Journal of Quantitative Spectroscopy and Radiative Transfer Journal of Quantitative Spectroscopy and Radiative Transfer, Elsevier, 2020 Journal of Quantitative Spectroscopy and Radiative Transfer, 2020, 255, pp.107248. ⟨10.1016/j.jqsrt.2020.107248⟩ Journal of Quantitative Spectroscopy & Radiative Transfer Journal of Quantitative Spectroscopy & Radiative Transfer, 2020, 255, pp.107248. ⟨10.1016/j.jqsrt.2020.107248⟩ |
| ISSN: | 0022-4073 |
| DOI: | 10.1016/j.jqsrt.2020.107248⟩ |
| Popis: | WOS:000581971300040; The helium singlet 1s4d-1s2p line (492.2 nm) has been measured in a corona discharge done in liquid helium at 4.2 K. A significant shift towards the blue direction is visible on the spectrum. Using an empirical model for the He-He* potential energy difference, we have performed a fitting of the line shape. The best-fit result is in good agreement with the experimental spectrum. It is shown that the blue shift is determined by the maximum of the potential energy difference function. Based on the fitting results, we give an estimate of this quantity. (c) 2020 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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