X 1Σ+ and a 3Σ+ states of the atom pair K plus Cs studied by Fourier-transform spectroscopy

被引：42
作者：
Ferber, R. [1 ]
Klincare, I. [1 ]
Nikolayeva, O. [1 ]
Tamanis, M. [1 ]
Knockel, H. [2 ]
Tiemann, E. [2 ]
Pashov, A. [3 ]
机构：
[1] Latvian State Univ, Ctr Laser, LV-1586 Riga, Latvia
[2] Leibniz Univ Hannover, Inst Quantum Opt, D-30167 Hannover, Germany
[3] Univ Sofia, Dept Phys, Sofia 1164, Bulgaria
来源：
PHYSICAL REVIEW A | 2009年 / 80卷 / 06期
关键词：
MOLECULES; LICS;
D O I：
10.1103/PhysRevA.80.062501
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A comprehensive study of the X (1)Sigma(+) and a (3)Sigma(+) electronic states of the K and Cs atom pair is presented. Abundant spectroscopic data include 1937 transitions to the a (3)Sigma(+) state and 13 724 transitions to the X (1)Sigma(+) state for K-39 Cs-133 which were obtained by Fourier-transform spectroscopy. From these data potential energy curves were constructed simultaneously for both states X (1)Sigma(+) and a (3)Sigma(+) which are coupled by the hyperfine interaction. This allows us to accurately model the potential close to K(4s) + Cs(6s) atom-pair asymptote which is required to simulate cold collision processes. Dissociation energies of the X (1)Sigma(+) state as D-e(X) = 4069.208(40) cm(-1) and of the a (3)Sigma(+) state as D-e(a) = 267.141(20) cm(-1) were determined. Scattering lengths are predicted for different KCs isotopologs and Feshbach resonances were calculated for magnetic fields up to 1000 G.
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页数：9
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共 34 条
[1]   EXPERIMENTAL DETERMINATIONS OF HYPERFINE-STRUCTURE IN ALKALI ATOMS [J].
ARIMONDO, E ;
INGUSCIO, M ;
VIOLINO, P .
REVIEWS OF MODERN PHYSICS, 1977, 49 (01) :31-75
[2]   Calculation of accurate permanent dipole moments of the lowest 1,3Σ+ states of heteronuclear alkali dimers using extended basis sets -: art. no. 204302 [J].
Aymar, M ;
Dulieu, O .
JOURNAL OF CHEMICAL PHYSICS, 2005, 122 (20)
[3]  
AYMAR M, COMMUNICATION
[4]   Formation of ultracold polar molecules in the rovibrational ground state [J].
Deiglmayr, J. ;
Grochola, A. ;
Repp, M. ;
Moertlbauer, K. ;
Glueck, C. ;
Lange, J. ;
Dulieu, O. ;
Wester, R. ;
Weidemueller, M. .
PHYSICAL REVIEW LETTERS, 2008, 101 (13)
[5]   Enhanced sensitivity to variation of me/mp in molecular spectra [J].
DeMille, D. ;
Sainis, S. ;
Sage, J. ;
Bergeman, T. ;
Kotochigova, S. ;
Tiesinga, E. .
PHYSICAL REVIEW LETTERS, 2008, 100 (04)
[6]   High-precision calculations of van der Waals coefficients for heteronuclear alkali-metal dimers [J].
Derevianko, A ;
Babb, JF ;
Dalgarno, A .
PHYSICAL REVIEW A, 2001, 63 (05) :527041-527044
[7]   The coupling of the X1Σ+ and a3Σ+ states of the atom pair Na plus Cs and modelling cold collisions [J].
Docenko, O. ;
Tamanis, M. ;
Zaharova, J. ;
Ferber, R. ;
Pashov, A. ;
Knoeckel, H. ;
Tiemann, E. .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2006, 39 (19) :S929-S943
[8]  
*EPAPS, EPLRAAN80128911 EPAP
[9]   Potassium ground-state scattering parameters and Born-Oppenheimer potentials from molecular spectroscopy [J].
Falke, Stephan ;
Knoeckel, Horst ;
Friebe, Jan ;
Riedmann, Matthias ;
Tiemann, Eberhard .
PHYSICAL REVIEW A, 2008, 78 (01)
[10]   The ground electronic state of KCs studied by Fourier transform spectroscopy [J].
Ferber, R. ;
Klincare, I. ;
Nikolayeva, O. ;
Tamanis, M. ;
Knockel, H. ;
Tiemann, E. ;
Pashov, A. .
JOURNAL OF CHEMICAL PHYSICS, 2008, 128 (24)
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