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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
