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Effects of impurity molecules on the lifetime of antiprotonic helium atoms
Quenching of metastable antiprotonic helium atoms in collisions with hydrogen and deuterium molecules has been studied using laser spectroscopy at CERN's antiproton decelerator. The temperature dependence of the quenching cross sections of the antiprotonic states (n, l) = (37, 34), (38, 35) and...
| Autores principales: | , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2004
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/S0168-583X(03)01769-5 http://cds.cern.ch/record/818503 |
| _version_ | 1780905483588075520 |
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| author | Juhász, B Eades, John Hayano, R S Hori, Masaki Horváth, D Ishikawa, T Torii, H A Widmann, E Yamaguchi, H Yamazaki, T |
| author_facet | Juhász, B Eades, John Hayano, R S Hori, Masaki Horváth, D Ishikawa, T Torii, H A Widmann, E Yamaguchi, H Yamazaki, T |
| author_sort | Juhász, B |
| collection | CERN |
| description | Quenching of metastable antiprotonic helium atoms in collisions with hydrogen and deuterium molecules has been studied using laser spectroscopy at CERN's antiproton decelerator. The temperature dependence of the quenching cross sections of the antiprotonic states (n, l) = (37, 34), (38, 35) and (38, 37) has been investigated and a deviation from the Arrhenius law was found at low temperatures. In case of the state (38, 37) with deuterium, detailed measurements revealed that the quenching cross section levels off at low temperatures indicating a strong quantum tunneling effect. (14 refs). |
| id | cern-818503 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2004 |
| record_format | invenio |
| spelling | cern-8185032019-09-30T06:29:59Zdoi:10.1016/S0168-583X(03)01769-5http://cds.cern.ch/record/818503engJuhász, BEades, JohnHayano, R SHori, MasakiHorváth, DIshikawa, TTorii, H AWidmann, EYamaguchi, HYamazaki, TEffects of impurity molecules on the lifetime of antiprotonic helium atomsOther Fields of PhysicsQuenching of metastable antiprotonic helium atoms in collisions with hydrogen and deuterium molecules has been studied using laser spectroscopy at CERN's antiproton decelerator. The temperature dependence of the quenching cross sections of the antiprotonic states (n, l) = (37, 34), (38, 35) and (38, 37) has been investigated and a deviation from the Arrhenius law was found at low temperatures. In case of the state (38, 37) with deuterium, detailed measurements revealed that the quenching cross section levels off at low temperatures indicating a strong quantum tunneling effect. (14 refs).oai:cds.cern.ch:8185032004 |
| spellingShingle | Other Fields of Physics Juhász, B Eades, John Hayano, R S Hori, Masaki Horváth, D Ishikawa, T Torii, H A Widmann, E Yamaguchi, H Yamazaki, T Effects of impurity molecules on the lifetime of antiprotonic helium atoms |
| title | Effects of impurity molecules on the lifetime of antiprotonic helium atoms |
| title_full | Effects of impurity molecules on the lifetime of antiprotonic helium atoms |
| title_fullStr | Effects of impurity molecules on the lifetime of antiprotonic helium atoms |
| title_full_unstemmed | Effects of impurity molecules on the lifetime of antiprotonic helium atoms |
| title_short | Effects of impurity molecules on the lifetime of antiprotonic helium atoms |
| title_sort | effects of impurity molecules on the lifetime of antiprotonic helium atoms |
| topic | Other Fields of Physics |
| url | https://dx.doi.org/10.1016/S0168-583X(03)01769-5 http://cds.cern.ch/record/818503 |
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