The quenching of vibrational excited CO(nu = 2) molecules by He atoms at ultra-low temperature is examined to determine the relative efficiency of the processes that involve the exchange of a double or a single quantum of vibrational energy. We find that at low temperature the double quantum exchange cross-section is orders of magnitude smaller than for the single quantum process. This result is valid for different initial rotational states of the CO mo lecule.

Quenching of vibrationally excited CO(ν=2) molecules by ultra-cold collisions with 4He atoms / Bodo, Enrico; Gianturco, Francesco Antonio; A., Dalgarno. - In: CHEMICAL PHYSICS LETTERS. - ISSN 0009-2614. - STAMPA. - 353:1-2(2002), pp. 127-130. [10.1016/s0009-2614(01)01501-9]

Quenching of vibrationally excited CO(ν=2) molecules by ultra-cold collisions with 4He atoms

BODO, Enrico;GIANTURCO, Francesco Antonio;
2002

Abstract

The quenching of vibrational excited CO(nu = 2) molecules by He atoms at ultra-low temperature is examined to determine the relative efficiency of the processes that involve the exchange of a double or a single quantum of vibrational energy. We find that at low temperature the double quantum exchange cross-section is orders of magnitude smaller than for the single quantum process. This result is valid for different initial rotational states of the CO mo lecule.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11573/255939
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