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Experimental evidence of twin fast metastable H(2S) atoms from dissociation of cold H2 induced by electrons: Towards the twin atoms experiment.
(Atomic Physics Department)
In this talk I will discuss the detection of two metastable H(22S) atoms coming from the dissociation of a single cold H2 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 from the collision center, measure the neutral metastable H(22S) through a localized quenching process, which mixes the H(22S) state with the H(22P), 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(22S)-H(22S) dissociation channel, which can lead to novel studies involving entangled massive particles.