| Autor: |
Robert J; Laboratoire Aimé Cotton, CNRS/Univ Paris-Sud/ENS Cachan, Bâtiment 505, Campus d'Orsay, 91405 Orsay Cedex, France., Zappa F, de Carvalho CR, Jalbert G, Nascimento RF, Trimeche A, Dulieu O, Medina A, Carvalho C, Faria NV |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2013 Nov 01; Vol. 111 (18), pp. 183203. Date of Electronic Publication: 2013 Oct 30. |
| DOI: |
10.1103/PhysRevLett.111.183203 |
| Abstrakt: |
We report the direct detection of two metastable H(2^{2}S) atoms coming from the dissociation of a single cold H(2) molecule, in coincidence measurements. The molecular dissociation was induced by electron impact in order to avoid limitations by the selection rules governing radiative transitions. Two detectors, placed close to the collision center, measure the neutral metastable H(2(2)S) through a localized quenching process, which mixes the H(2^{2}S) state with the H(2^{2}P), leading to a Lyman-α detection. Our data show the accomplishment of a coincidence measurement which proves for the first time the existence of the H(2(2)S)-H(2(2)S) dissociation channel. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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