QUENCHING OF HELIUM AFTERGLOW BY INFRARED PHOTONS
The visible afterglow radiation from low-pressure weakly ionized helium exhibits a partial quenching due to absorption of infrared photons (0.11–0.14 eV). The helium sample is placed in the cavity of a Q-switched CO2 laser and studied at gas temperatures in the range from 77 to 300°K. The partial qu...
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| Veröffentlicht in: | Applied physics letters 1969-01, Vol.15 (4), p.113-114 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The visible afterglow radiation from low-pressure weakly ionized helium exhibits a partial quenching due to absorption of infrared photons (0.11–0.14 eV). The helium sample is placed in the cavity of a Q-switched CO2 laser and studied at gas temperatures in the range from 77 to 300°K. The partial quenching appears to originate from photon-induced change of population of a state or states of a neutral or ionic helium molecule. |
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| ISSN: | 0003-6951 1077-3118 |
| DOI: | 10.1063/1.1652926 |