Rotational relaxation in ultracold CO+He collisions

P. M. Florian; M. Hoster; R. C. Forrey

doi:10.1103/PhysRevA.70.032709

Rotational relaxation in ultracold CO+He collisions

P. M. Florian, M. Hoster, R. C. Forrey

Division of Science (Berks)

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Cold and ultracold collisions involving rotationally hot CO molecules were investigated by quantum mechanical coupled channel, coupled states, and potential scattering formulations. The quenching rate coefficients for initial rotational levels near the dissociation threshold were given. On comparing the stability of the CO "super rotors" against collisional decay with the investigations involving homonuclesr molecules it was found that the quasiresonant transitions provided a stronger contribution to the total relaxation rate than in the case of O₂. In the case of H₂, sharp structures in the distribution of total quenching rate coefficients were found at rotational levels where quasiresonant scattering was not allowed.

Original language	English (US)
Article number	032709
Pages (from-to)	032709-1-032709-7
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	70
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevA.70.032709
State	Published - Sep 2004

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

Access to Document

10.1103/PhysRevA.70.032709

Cite this

@article{873645ac96c44d88836119587c57eebc,

title = "Rotational relaxation in ultracold CO+He collisions",

abstract = "Cold and ultracold collisions involving rotationally hot CO molecules were investigated by quantum mechanical coupled channel, coupled states, and potential scattering formulations. The quenching rate coefficients for initial rotational levels near the dissociation threshold were given. On comparing the stability of the CO {"}super rotors{"} against collisional decay with the investigations involving homonuclesr molecules it was found that the quasiresonant transitions provided a stronger contribution to the total relaxation rate than in the case of O2. In the case of H2, sharp structures in the distribution of total quenching rate coefficients were found at rotational levels where quasiresonant scattering was not allowed.",

author = "Florian, {P. M.} and M. Hoster and Forrey, {R. C.}",

note = "Funding Information: This work was funded by the National Science Foundation, Grant Nos. PHY-0331073 and PHY-0244066.",

year = "2004",

month = sep,

doi = "10.1103/PhysRevA.70.032709",

language = "English (US)",

volume = "70",

pages = "032709--1--032709--7",

journal = "Physical Review A",

issn = "2469-9926",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - Rotational relaxation in ultracold CO+He collisions

AU - Florian, P. M.

AU - Hoster, M.

AU - Forrey, R. C.

N1 - Funding Information: This work was funded by the National Science Foundation, Grant Nos. PHY-0331073 and PHY-0244066.

PY - 2004/9

Y1 - 2004/9

N2 - Cold and ultracold collisions involving rotationally hot CO molecules were investigated by quantum mechanical coupled channel, coupled states, and potential scattering formulations. The quenching rate coefficients for initial rotational levels near the dissociation threshold were given. On comparing the stability of the CO "super rotors" against collisional decay with the investigations involving homonuclesr molecules it was found that the quasiresonant transitions provided a stronger contribution to the total relaxation rate than in the case of O2. In the case of H2, sharp structures in the distribution of total quenching rate coefficients were found at rotational levels where quasiresonant scattering was not allowed.

AB - Cold and ultracold collisions involving rotationally hot CO molecules were investigated by quantum mechanical coupled channel, coupled states, and potential scattering formulations. The quenching rate coefficients for initial rotational levels near the dissociation threshold were given. On comparing the stability of the CO "super rotors" against collisional decay with the investigations involving homonuclesr molecules it was found that the quasiresonant transitions provided a stronger contribution to the total relaxation rate than in the case of O2. In the case of H2, sharp structures in the distribution of total quenching rate coefficients were found at rotational levels where quasiresonant scattering was not allowed.

UR - http://www.scopus.com/inward/record.url?scp=19644401204&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=19644401204&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.70.032709

DO - 10.1103/PhysRevA.70.032709

M3 - Article

AN - SCOPUS:19644401204

VL - 70

SP - 032709-1-032709-7

JO - Physical Review A

JF - Physical Review A

SN - 2469-9926

IS - 3

M1 - 032709

ER -

Rotational relaxation in ultracold CO+He collisions

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this