Collision-induced spin depolarization of alkali-metal atoms in cold 3He gas

被引：15

作者：

Tscherbul, T. V. ^{[1
,2
]}

Zhang, P. ^{[2
]}

Sadeghpour, H. R. ^{[2
]}

Dalgarno, A. ^{[1
,2
]}

Brahms, N. ^{[1
,3
]}

Au, Y. S. ^{[1
,3
]}

Doyle, J. M. ^{[1
,3
]}

机构：

[1] Harvard MIT Ctr Ultracold Atoms, Cambridge, MA 02138 USA

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

[3] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW A | 2008年 / 78卷 / 06期

关键词：

atom-atom collisions; helium; lithium; magnetic traps; potassium; quantum optics; quantum theory; radiation pressure;

D O I：

10.1103/PhysRevA.78.060703

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a joint experimental and theoretical study of spin depolarization in collisions of alkali-metal atoms with He-3 in a magnetic field. A rigorous quantum theory for spin-changing transitions is developed and applied to calculate the spin exchange and spin relaxation rates of Li and K atoms in cryogenic He-3 gas. Magnetic trapping experiments provide upper bounds to the spin exchange rates for Li-He-3 and K-He-3, which are in agreement with the present theory. Our calculations demonstrate that the alkali-metal atoms have extremely slow spin depolarization rates, suggesting a number of potential applications in precision spectroscopy and quantum optics.

引用

页数：4

共 50 条

[1] Collision-induced spin exchange of alkali-metal atoms with 3He: An ab initio study
Tscherbul, T. V.
Zhang, P.
Sadeghpour, H. R.
Dalgarno, A.
PHYSICAL REVIEW A, 2009, 79 (06):
[2] COLLISION-INDUCED ABSORPTION IN ALKALI-METAL ATOM INERT-GAS MIXTURES
BOTTCHER, C
DALGARNO, A
WRIGHT, EL
PHYSICAL REVIEW A, 1973, 7 (05) : 1606 - 1609
[3] ALKALI-METAL CATIONIZATION AND ITS EFFECT ON THE COLLISION-INDUCED DECOMPOSITION OF TAXOL
MADHUSUDANAN, KP
JOURNAL OF MASS SPECTROMETRY, 1995, 30 (05): : 703 - 707
[4] COLLISION-INDUCED DISSOCIATION OF ALKALI-METAL CATIONIZED AND PERMETHYLATED OLIGOSACCHARIDES - INFLUENCE OF THE COLLISION ENERGY AND OF THE COLLISION GAS FOR THE ASSIGNMENT OF LINKAGE POSITION
LEMOINE, J
FOURNET, B
DESPEYROUX, D
JENNINGS, KR
ROSENBERG, R
DEHOFFMANN, E
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 1993, 4 (03) : 197 - 203
[5] ON COLLISION-INDUCED AMPLIFIED EMISSION OF ALKALI ATOMS
CZUB, J
FIUTAK, J
MIKLASZEWSKI, W
ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1986, 3 (01): : 23 - 30
[6] Cold collisions of alkali-metal atoms and chromium atoms
Jeung, G-H
Hagebaum-Reignier, D.
Jamieson, M. J.
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2010, 43 (23)
[7] Spin depolarization and spin exchange in cold collisions involving 3He: role of anisotropy
Sadeghpour, H. R.
JOURNAL OF MODERN OPTICS, 2010, 57 (19) : 1858 - 1862
[8] Spin dynamics of dense alkali-metal atoms
Ishikawa, K
Kojima, T
Hasegawa, T
Takagi, Y
PHYSICAL REVIEW A, 2002, 65 (03) : 9
[9] Spin dynamics of dense alkali-metal atoms
Ishikawa, Kiyoshi
Kojima, Togo
Hasegawa, Taro
Takagi, Yoshihiro
Physical Review A - Atomic, Molecular, and Optical Physics, 2002, 65 (3 A): : 1 - 032511
[10] COLLISION-INDUCED SPIN FLIP OF HYDROGEN ATOMS
ROOS, OV
PHYSICAL REVIEW, 1959, 115 (04): : 911 - 918

← 1 2 3 4 5 →