Rotational quenching of C2 with 3He and 4He collisions at ultracold temperatures

dc.contributor.author	Ritika
dc.contributor.author	Dhilip Kumar, T.J.
dc.date.accessioned	2022-07-17T09:44:23Z
dc.date.available	2022-07-17T09:44:23Z
dc.date.issued	2022-07-17
dc.identifier.uri	http://localhost:8080/xmlui/handle/123456789/3669
dc.description.abstract	Quantum mechanical closed coupling scattering calculations are carried out at temperatures ranging from K to 100 K for studying rotational transitions of C2 due to collisions with 3He and 4He employing our new C2-He potential energy surface computed at the CCSD(T)- F12b/aug-cc-pVQZ level of theory. Among the isotopes of He, the heavier 4He isotope has larger value of rotational quenching cross section than 3He isotope. Wigner’s threshold law holds below cm−1. Quenching rate coefficients suggest that C2 can be cooled with 4He buffer gas. The dominance of 4He on C2 molecule is further addressed by calculating the predissociation lifetime of C2.	en_US
dc.language.iso	en_US	en_US
dc.subject	Close coupling calculations	en_US
dc.subject	Cross-sections	en_US
dc.subject	Potential energy surface	en_US
dc.subject	Rotational rates	en_US
dc.subject	Ultracold collisions	en_US
dc.title	Rotational quenching of C2 with 3He and 4He collisions at ultracold temperatures	en_US
dc.type	Article	en_US