skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Publisher's Note: Deperturbation treatment of the A {sup 1}{sigma}{sup +}-b {sup 3}{pi} complex of NaRb and prospects for ultracold molecule formation in X {sup 1}{sigma}{sup +}(v=0;J=0) [Phys. Rev. A 75, 042503 (2007)]

Abstract

No abstract prepared.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
OSTI Identifier:
20982618
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.75.059907; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; MOLECULES; PHOTON-MOLECULE COLLISIONS; RUBIDIUM COMPOUNDS; SODIUM COMPOUNDS; TEMPERATURE RANGE 0000-0013 K

Citation Formats

Docenko, O., Tamanis, M., Ferber, R., Pazyuk, E. A., Zaitsevskii, A., Stolyarov, A. V., Pashov, A., Knoeckel, H., and Tiemann, E. Publisher's Note: Deperturbation treatment of the A {sup 1}{sigma}{sup +}-b {sup 3}{pi} complex of NaRb and prospects for ultracold molecule formation in X {sup 1}{sigma}{sup +}(v=0;J=0) [Phys. Rev. A 75, 042503 (2007)]. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.059907.
Docenko, O., Tamanis, M., Ferber, R., Pazyuk, E. A., Zaitsevskii, A., Stolyarov, A. V., Pashov, A., Knoeckel, H., & Tiemann, E. Publisher's Note: Deperturbation treatment of the A {sup 1}{sigma}{sup +}-b {sup 3}{pi} complex of NaRb and prospects for ultracold molecule formation in X {sup 1}{sigma}{sup +}(v=0;J=0) [Phys. Rev. A 75, 042503 (2007)]. United States. doi:10.1103/PHYSREVA.75.059907.
Docenko, O., Tamanis, M., Ferber, R., Pazyuk, E. A., Zaitsevskii, A., Stolyarov, A. V., Pashov, A., Knoeckel, H., and Tiemann, E. Tue . "Publisher's Note: Deperturbation treatment of the A {sup 1}{sigma}{sup +}-b {sup 3}{pi} complex of NaRb and prospects for ultracold molecule formation in X {sup 1}{sigma}{sup +}(v=0;J=0) [Phys. Rev. A 75, 042503 (2007)]". United States. doi:10.1103/PHYSREVA.75.059907.
@article{osti_20982618,
title = {Publisher's Note: Deperturbation treatment of the A {sup 1}{sigma}{sup +}-b {sup 3}{pi} complex of NaRb and prospects for ultracold molecule formation in X {sup 1}{sigma}{sup +}(v=0;J=0) [Phys. Rev. A 75, 042503 (2007)]},
author = {Docenko, O. and Tamanis, M. and Ferber, R. and Pazyuk, E. A. and Zaitsevskii, A. and Stolyarov, A. V. and Pashov, A. and Knoeckel, H. and Tiemann, E},
abstractNote = {No abstract prepared.},
doi = {10.1103/PHYSREVA.75.059907},
journal = {Physical Review. A},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}
  • The laser-induced fluorescence (LIF) A {sup 1{Sigma}+}-b {sup 3{Pi}{yields}}X {sup 1{Sigma}+} spectra of the KCs molecule were recorded in a near infrared region by a Fourier-transform spectrometer with a resolution of 0.03 cm{sup -1}. Overall more than 200 collisionally enhanced LIF spectra were rotationally assigned to {sup 39}K{sup 133}Cs and {sup 41}K{sup 133}Cs isotopomers yielding more than 3400 rovibronic term values of the strongly mixed singlet A {sup 1{Sigma}+} and triplet b {sup 3{Pi}} states with the uncertainty of 0.003-0.01 cm{sup -1}. Experimental data massive starts from the lowest vibrational level v{sub A}=0 of the singlet and nonuniformly covers themore » energy range E is an element of [10 040,13 250] cm{sup -1} with rotational quantum numbers J{sup '} is an element of [7,225]. Besides the dominating regular A {sup 1{Sigma}+}-b {sup 3{Pi}}{sub {Omega}=0} interactions, the weak local heterogeneous A {sup 1{Sigma}+}-b {sup 3{Pi}}{sub {Omega}=1} perturbations have been discovered and analyzed. Coupled-channels deperturbation analysis of the experimental {sup 39}K{sup 133}Cs e-parity term values of the A {sup 1{Sigma}+}-b {sup 3{Pi}}{sub {Omega}=0,1,2} complex was accomplished in the framework of the phenomenological 4x4 Hamiltonian accounting implicitly for regular interactions with the remote {sup 1{Pi}} and {sup 3{Sigma}+} states. The diabatic potential energy curves of the A {sup 1{Sigma}+} and b {sup 3{Pi}} states, as well as relevant spin-orbit coupling matrix elements, were defined analytically with the expanded Morse oscillators model. The obtained parameters reproduce 95% of experimental data field of the {sup 39}K{sup 133}Cs isotopomer with a standard deviation of 0.004 cm{sup -1}, which is consistent with the uncertainty of the experiment. Reliability of the derived parameters was confirmed by a good agreement between the predicted and experimental term values of the {sup 41}K{sup 133}Cs isotopomer. The calculated relative intensity distributions in A-b{yields}X LIF progressions are also consistent with their experimental counterparts. The deperturbation model was applied for simulation of a pump-dump optical cycle a {sup 3{Sigma}+{yields}}A {sup 1{Sigma}+}-b {sup 3{Pi}{yields}}X {sup 1{Sigma}+} proposed for transformation of ultracold KCs molecules to their absolute ground state v{sub X}=0;J{sub X}=0.« less
  • High resolution Fourier-transform spectroscopy data of term values in the spin-orbit (SO) coupled first excited A {sup 1}Σ{sup +} and b{sup 3}Π{sub 0±} states in KCs were obtained from (4){sup 1}Σ{sup +} → A {sup 1}Σ{sup +} − b {sup 3}Π, A {sup 1}Σ{sup +} − b {sup 3}Π → X{sup 1}Σ{sup +}, and (1){sup 3}Δ{sub 1} → b{sup 3}Π{sub 0±} spectra of laser-induced fluorescence (LIF). About 3000 new rovibronic term values of the A {sup 1}Σ{sup +} and b {sup 3}Π{sub Ω} states were obtained with an uncertainty about 0.01 cm{sup −1} and added to the previously obtained 3439 term values in Kruzins et al. [Phys. Rev.more » A 81, 042509 (2010)] and 30 term values of the b {sup 3}Π{sub 0{sup +}} state levels below the A {sup 1}Σ{sup +} state in Tamanis et al. [Phys. Rev. A 82, 032506 (2010)]. The data field was extended considerably, going down to vibrational level v{sub b} = 0 and up in energy to 13 814 cm{sup −1}, as compared to previously achieved v{sub b} = 14 and E = 13 250 cm{sup −1}. Overall 6431 e-symmetry term values of {sup 39}K{sup 133}Cs were included in 4 × 4 coupled-channel deperturbation analysis. The analytical Morse-Long-Range (MLR) function yielded empirical diabatic potentials for the A {sup 1}Σ{sup +} and b {sup 3}Π{sub 0{sup +}} states while the morphing of the SO ab initio points [J. T. Kim et al., J. Mol. Spectrosc. 256, 57 (2009)] provided the empirical diagonal and off-diagonal SO functions. Overall 98.5% of the fitted term values were reproduced with a rms (root mean square) uncertainty of 0.004 cm{sup −1}. The reliability of the model is proved by a good agreement of predicted and measured term values of the {sup 41}K{sup 133}Cs isotopologue, as well as of measured and calculated intensities of (4){sup 1}Σ{sup +} → A {sup 1}Σ{sup +} − b {sup 3}Π LIF progressions. Direct-potential-fit of low-lying v{sub b} levels of the b {sup 3}Π{sub 0{sup −}} component yielded the MLR potential which represents the 204 f-symmetry experimental term values with a rms uncertainty of 0.002 cm{sup −1}. The Ω-doubling of the b {sup 3}Π{sub 0} sub-state demonstrates a pronounced v{sub b}-dependent increase.« less