Vibrational relaxation of trapped molecules

被引：50

作者：

Forrey, RC ^{[1
]}

Kharchenko, V ^{[1
]}

Balakrishnan, N ^{[1
]}

Dalgarno, A ^{[1
]}

机构：

[1] Harvard Smithsonian Ctr Astrophys, Inst Theoret Atom & Mol Phys, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW A | 1999年 / 59卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.59.2146

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Vibrational relaxation of trapped molecules due to collisions with cold atoms is investigated using the results of quantum-mechanical scattering calculations. Trap loss is analyzed using an exactly solvable kinetic model that includes direct collisional quenching and an indirect process of vibrational predissociation. At low atom density, the relaxation is due primarily to collisional quenching. At high atom density, the relaxation involves additional time scales due to the formation and decay of van der Waals complexes. It is shown that the most weakly bound state of the van der Waals complex for a given diatomic vibrational level controls the relaxation at all atom densities. Possible experiments using trapped molecules are: discussed. [S1050-2947(99)05303-2].

引用

页码：2146 / 2152

页数：7

共 15 条

[1] THE THEORY OF SCATTERING BY A RIGID ROTATOR [J].

ARTHURS, AM ;

DALGARNO, A .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1960, 256 (1287) :540-551

[2]

Bahns JT, 1996, J CHEM PHYS, V104, P9689, DOI 10.1063/1.471731

[3] Threshold phenomena in ultracold atom-molecule collisions [J].

Balakrishnan, N ;

Forrey, RC ;

Dalgarno, A .

CHEMICAL PHYSICS LETTERS, 1997, 280 (1-2) :1-4

[4] Quenching of H2 vibrations in ultracold 3He and 4He collisions [J].

Balakrishnan, N ;

Forrey, RC ;

Dalgarno, A .

PHYSICAL REVIEW LETTERS, 1998, 80 (15) :3224-3227

[5] Complex scattering lengths in multi-channel atom-molecule collisions [J].

Balakrishnan, N ;

Kharchenko, V ;

Forrey, RC ;

Dalgarno, A .

CHEMICAL PHYSICS LETTERS, 1997, 280 (1-2) :5-9

[6] BUFFER-GAS LOADING OF ATOMS AND MOLECULES INTO A MAGNETIC TRAP [J].

DOYLE, JM ;

FRIEDRICH, B ;

KIM, J ;

PATTERSON, D .

PHYSICAL REVIEW A, 1995, 52 (04) :R2515-R2518

[7] ROLE OF VAN DER WAALS MOLECULES IN VIBRATIONAL-RELAXATION PROCESSES [J].

EWING, G .

CHEMICAL PHYSICS, 1978, 29 (03) :253-270

[8] Formation of cold Cs2 molecules through photoassociation [J].

Fioretti, A ;

Comparat, D ;

Crubellier, A ;

Dulieu, O ;

Masnou-Seeuws, F ;

Pillet, P .

PHYSICAL REVIEW LETTERS, 1998, 80 (20) :4402-4405

[9] Feshbach resonances in ultracold atom-diatom scattering [J].

Forrey, RC ;

Balakrishnan, N ;

Kharchenko, V ;

Dalgarno, A .

PHYSICAL REVIEW A, 1998, 58 (04) :R2645-R2647

[10]

Hutson J.M., 1994, MOLSCAT COMPUTER COD

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