{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T22:25:04Z","timestamp":1784759104712,"version":"3.55.0"},"reference-count":71,"publisher":"AIP Publishing","issue":"6","funder":[{"DOI":"10.13039\/501100005414","name":"Latvijas Universitate","doi-asserted-by":"publisher","award":["A5-AZ27"],"award-info":[{"award-number":["A5-AZ27"]}],"id":[{"id":"10.13039\/501100005414","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100015668","name":"Laserlab-Europe","doi-asserted-by":"publisher","award":["871124"],"award-info":[{"award-number":["871124"]}],"id":[{"id":"10.13039\/100015668","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Russian Government Budget","award":["121031300173-2"],"award-info":[{"award-number":["121031300173-2"]}]},{"name":"Russian Government Budget","award":["121031300176-3"],"award-info":[{"award-number":["121031300176-3"]}]},{"name":"University of Latvia Faculty of Physics, Mathematics and Optometry"}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2024,2,14]]},"abstract":"<jats:p>Rotationally resolved Fourier-transform spectra of laser-induced fluorescence A1\u03a3u+\u223cb3\u03a0u\u2192X1\u03a3g+ of K2 molecules were recorded and analyzed, yielding 4053 term values of the spin\u2013orbit (SO) coupled A \u223c b complex of the 39K2 isotopologue with \u223c0.01 cm\u22121 accuracy. Their compilation with 1739 term values from previously published sources allowed them to cover the energy range [9955, 17\u2009436] cm\u22121 from the bottom of the lower-lying b3\u03a0u state up to the vicinity of the atomic asymptote 4s2S12 + 4p2P12, with a rotational quantum number J \u2208 [0, 149]. The experimental data were processed by a direct 6 \u00d7 6 coupled-channel (CC) deperturbation treatment, which accounted explicitly for both SO and electronic-rotational interactions between all six e-symmetry states: A1\u03a3u+(0u+), b3\u03a0u(0u+,1u,2u), c3\u03a3u(1u), and B1\u03a0u(1u). The initial parameters of the global deperturbation model have been estimated in the framework of ab\u00a0initio electronic structure calculations applying multi-reference configuration-interaction and coupled-clusters methods. The interatomic potentials analytically defined for A and b states, as well as SO-splitting of the triplet b state and A \u223c b SO-coupling functions, have been particularly refined to fit the 5792 term values of the 39K2 isotopologue, whereas the rest parameters were fixed on their ab\u00a0initio values. The resulting mass-invariant parameters of the 6 \u00d7 6 CC model reproduced the overall rovibronic term energies of the A \u223c b complex of 39K2 with accuracy, which is well within the experimental errors. The quality of the deperturbation analysis was independently confirmed by comparison with the present obtained 705 and 14 term values of respective 39K41K and 41K2 isotopologues, as well as by agreement between measured and predicted relative intensity distributions in long A \u223c b \u2192 X(vX) band progressions. This deperturbation analysis provided the refined dissociation energy Tdis = 17\u2009474.569(5) cm\u22121 and the long-range coefficient C3\u03a3 = 5.501(4) \u00d7 105 cm\u22121 \u00c53 relevant to the non-relativistic atomic limit 4s + 4p. The derived Tdis yielded the accurate well depth De = 4450.910(5) cm\u22121 for the ground X1\u03a3g+ state, whereas the new C3\u03a3 value yielded the improved estimates for atomic K(4p2P12;32) radiative lifetimes, \u03c412 = 26.67(3) and \u03c432 = 26.32(3) ns.<\/jats:p>","DOI":"10.1063\/5.0188443","type":"journal-article","created":{"date-parts":[[2024,2,20]],"date-time":"2024-02-20T20:56:20Z","timestamp":1708462580000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":3,"title":["Fourier-transform spectroscopy and global deperturbation treatment of the A1\u03a3u+ and <i>b<\/i>3\u03a0<i>u<\/i> states of K2 in the entire bound energy range"],"prefix":"10.1063","volume":"160","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9525-2996","authenticated-orcid":false,"given":"I.","family":"Klincare","sequence":"first","affiliation":[{"name":"Laser Center, Faculty of Physics, Mathematics and Optometry, University of Latvia 1 , 19 Rainis Blvd., Riga LV-1586, Latvia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6252-2993","authenticated-orcid":false,"given":"A.","family":"Lapins","sequence":"additional","affiliation":[{"name":"Laser Center, Faculty of Physics, Mathematics and Optometry, University of Latvia 1 , 19 Rainis Blvd., Riga LV-1586, Latvia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0710-3470","authenticated-orcid":false,"given":"M.","family":"Tamanis","sequence":"additional","affiliation":[{"name":"Laser Center, Faculty of Physics, Mathematics and Optometry, University of Latvia 1 , 19 Rainis Blvd., Riga LV-1586, Latvia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6313-5768","authenticated-orcid":false,"given":"R.","family":"Ferber","sequence":"additional","affiliation":[{"name":"Laser Center, Faculty of Physics, Mathematics and Optometry, University of Latvia 1 , 19 Rainis Blvd., Riga LV-1586, Latvia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5347-2429","authenticated-orcid":false,"given":"A.","family":"Zaitsevskii","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Lomonosov Moscow State University 2 , Leninskie Gory 1\/3, 119991 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0568-7801","authenticated-orcid":false,"given":"E. A.","family":"Pazyuk","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Lomonosov Moscow State University 2 , Leninskie Gory 1\/3, 119991 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7046-7202","authenticated-orcid":false,"given":"A. V.","family":"Stolyarov","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Lomonosov Moscow State University 2 , Leninskie Gory 1\/3, 119991 Moscow, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2024,2,14]]},"reference":[{"key":"2024022020561747900_c1","volume-title":"Spectra of Atoms and Molecules","year":"2005","edition":"2nd ed."},{"key":"2024022020561747900_c2","volume-title":"The Spectra and Dynamics of Diatomic Molecules","year":"2004"},{"key":"2024022020561747900_c3","doi-asserted-by":"publisher","first-page":"4949","DOI":"10.1021\/cr300092g","article-title":"Ultracold molecules under control!","volume":"112","year":"2012","journal-title":"Chem. Rev."},{"key":"2024022020561747900_c4","doi-asserted-by":"publisher","first-page":"013366","DOI":"10.1103\/physrevresearch.2.013366","article-title":"Beyond Born-Oppenheimer approximation in ultracold atomic collisions","volume":"2","year":"2020","journal-title":"Phys. Rev. Res."},{"key":"2024022020561747900_c5","doi-asserted-by":"publisher","first-page":"1001","DOI":"10.1070\/rcr4534","article-title":"Laser synthesis of ultracold alkali metal dimers: Optimization and control","volume":"84","year":"2015","journal-title":"Russ. Chem. Rev."},{"key":"2024022020561747900_c6","year":"2022"},{"key":"2024022020561747900_c7","doi-asserted-by":"publisher","first-page":"340","DOI":"10.1006\/jmsp.1996.0039","article-title":"Observation and analysis of the A1\u03a3u+ state of 6Li2 from v = 0 to the dissociation limit","volume":"175","year":"1996","journal-title":"J. Mol. Spectrosc."},{"key":"2024022020561747900_c8","doi-asserted-by":"publisher","first-page":"129","DOI":"10.1006\/jmsp.1997.7309","article-title":"The 23\u03a0g \u2212 b3\u03a0u and 13\u0394g \u2212 b3\u03a0u transitions in 7Li2: Analysis of the b3\u03a0u state for v = 0\u201327","volume":"184","year":"1997","journal-title":"J. Mol. Spectrosc."},{"key":"2024022020561747900_c9","doi-asserted-by":"publisher","first-page":"022504","DOI":"10.1103\/physreva.88.022504","article-title":"Fourier transform spectroscopy and extended deperturbation treatment of the spin-orbit-coupled A1\u03a3u+ and b3\u03a0u states of the Rb2 molecule","volume":"88","year":"2013","journal-title":"Phys. Rev. A"},{"key":"2024022020561747900_c10","doi-asserted-by":"publisher","first-page":"032514","DOI":"10.1103\/physreva.83.032514","article-title":"Global analysis of data on the spin-orbit-coupled A1\u03a3u+ and b3\u03a0u states of Cs2","volume":"83","year":"2011","journal-title":"Phys. Rev. A"},{"key":"2024022020561747900_c11","doi-asserted-by":"publisher","first-page":"042507","DOI":"10.1103\/physreva.100.042507","article-title":"Fourier-transform spectroscopy, relativistic electronic structure calculation, and coupled-channel deperturbation analysis of the fully mixed A1\u03a3u+ and b3\u03a0u states of Cs2","volume":"100","year":"2019","journal-title":"Phys. Rev. A"},{"key":"2024022020561747900_c12","doi-asserted-by":"publisher","first-page":"43","DOI":"10.1063\/1.458447","article-title":"The A1\u03a3u+ state of the potassium dimer","volume":"92","year":"1990","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c13","doi-asserted-by":"publisher","first-page":"224303","DOI":"10.1063\/1.2375120","article-title":"The A1\u03a3u+ state of K2 up to the dissociation limit","volume":"125","year":"2006","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c14","doi-asserted-by":"publisher","first-page":"294","DOI":"10.1016\/0022-2852(79)90059-6","article-title":"An effective Hamiltonian for diatomic molecules: Ab initio calculations of parameters of HCl+","volume":"74","year":"1979","journal-title":"J. Mol. Spectrosc."},{"key":"2024022020561747900_c15","doi-asserted-by":"publisher","first-page":"6225","DOI":"10.1088\/0022-3700\/20\/23\/014","article-title":"Interactions between the A(1)1\u03a3u+ and b(1) 3\u03a0u states of K2","volume":"20","year":"1987","journal-title":"J. Phys. B: At. Mol. Phys."},{"key":"2024022020561747900_c16","doi-asserted-by":"publisher","first-page":"115","DOI":"10.1016\/0022-2852(92)90552-y","article-title":"CW all-optical triple-resonance spectroscopy of K2: Deperturbation analysis of the A1\u03a3u+ (v \u2264 12) and b3\u03a0u (13 \u2264v\u2264 24) states","volume":"155","year":"1992","journal-title":"J. Mol. Spectrosc."},{"key":"2024022020561747900_c17","doi-asserted-by":"publisher","first-page":"319","DOI":"10.1007\/s100530170006","article-title":"Inversion analysis of K2 coupled electronic states with the Fourier grid method","volume":"17","year":"2001","journal-title":"Eur. Phys. J. D"},{"key":"2024022020561747900_c18","doi-asserted-by":"publisher","first-page":"3510","DOI":"10.1063\/1.461905","article-title":"Rotational magnetic moment of the Na2\u00a0molecule in A1\u03a3u+ state: Perturbation effects","volume":"96","year":"1992","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c19","doi-asserted-by":"publisher","first-page":"826","DOI":"10.1063\/1.464246","article-title":"Observation of A1\u03a3u+\u223cb3\u03a0u interaction in g factors of weakly coupled Na2A1\u03a3u+ state levels","volume":"98","year":"1993","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c20","doi-asserted-by":"publisher","first-page":"044301","DOI":"10.1063\/1.2747595","article-title":"New spectroscopic data, spin-orbit functions, and global analysis of data on the A1\u03a3u and b3\u03a0u states of Na2","volume":"127","year":"2007","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c21","doi-asserted-by":"publisher","first-page":"11208","DOI":"10.1063\/1.1522716","article-title":"Spin-orbit interactions, new spectral data, and deperturbation of the coupled b3\u03a0u and A1\u03a3u+ states of K2","volume":"117","year":"2002","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c22","doi-asserted-by":"publisher","first-page":"370","DOI":"10.1016\/0022-2852(91)90062-F","article-title":"The X1\u03a3g+ electronic state of K2","volume":"147","year":"1991","journal-title":"J. Mol. Spectrosc."},{"key":"2024022020561747900_c23","doi-asserted-by":"publisher","first-page":"3350","DOI":"10.1063\/1.470245","article-title":"The long-range potential of the K2X1\u03a3g+ ground electronic state up to 15 \u00c5","volume":"103","year":"1995","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c24","doi-asserted-by":"publisher","first-page":"6646","DOI":"10.1063\/1.469137","article-title":"Observation of the 43\u03a3g+, 33\u03a0g, 23\u0394g, and b3\u03a0u states of 39K2 by perturbation facilitated optical-optical double resonance spectroscopy","volume":"102","year":"1995","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c25","doi-asserted-by":"publisher","first-page":"1771","DOI":"10.1063\/1.1764498","article-title":"Theoretical determination of highly excited states of K2 correlated adiabatically above K(4p) + K(4p)","volume":"121","year":"2004","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c26","doi-asserted-by":"publisher","first-page":"244307","DOI":"10.1063\/1.3158361","article-title":"Theoretical investigation of the (\u03a9u,g+\/\u2212) states of K2 dissociating adiabatically up to K (4p2P32) + K (4p2P32)","volume":"130","year":"2009","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c27","doi-asserted-by":"publisher","first-page":"012724","DOI":"10.1103\/physreva.76.012724","article-title":"Born-Oppenheimer approximation for mass scaling of cold-collision properties","volume":"76","year":"2007","journal-title":"Phys. Rev. A"},{"key":"2024022020561747900_c28","doi-asserted-by":"publisher","first-page":"107291","DOI":"10.1016\/j.jqsrt.2020.107291","article-title":"The branching ratio of intercombination A1\u03a3+ \u223c b3\u03a0 \u2192 a3\u03a3+\/X1\u03a3+ transitions in the RbCs molecule: Measurements and calculations","volume":"256","year":"2020","journal-title":"J. Quant. Spectrosc. Radiat. Transfer"},{"key":"2024022020561747900_c29","unstructured":"T. G.\n            Tiecke\n          , Properties of potassium v1.03, 14 P, https:\/\/studylib.net\/doc\/8201965\/properties-of-potassium, 2019."},{"key":"2024022020561747900_c30","doi-asserted-by":"publisher","first-page":"042509","DOI":"10.1103\/physreva.81.042509","article-title":"Fourier-transform spectroscopy and coupled-channels deperturbation treatment of the A1\u03a3+ \u2212 b3\u03a0 complex of KCs","volume":"81","year":"2010","journal-title":"Phys. Rev. A"},{"key":"2024022020561747900_c31","doi-asserted-by":"publisher","first-page":"144310","DOI":"10.1063\/1.4945721","article-title":"Fourier-transform spectroscopy and deperturbation analysis of the spin-orbit coupled A1\u03a3+ and b3\u03a0 states of KRb","volume":"144","year":"2016","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c32","doi-asserted-by":"publisher","first-page":"7","DOI":"10.1016\/0022-4073(93)90124-z","article-title":"Argon branching ratios for spectrometer response calibration","volume":"50","year":"1993","journal-title":"J. Quant. Spectrosc. Radiat. Transfer"},{"key":"2024022020561747900_c33","unstructured":"C.\n            Lisdat\n          , \u201cRealisation eines materiewelleninterferometers f\u00fcr molek\u00fcle und neue m\u00f6glichkeiten zur beobachtung von atom-molek\u00fcl-st\u00f6\u00dfen,\u201d Ph.D. thesis, Gottfried Wilhelm Leibniz Universit\u00e4t, Hannover, 2001."},{"key":"2024022020561747900_c34","volume-title":"Rotational Spectroscopy of Diatomic Molecules","year":"2003","edition":"1st ed."},{"key":"2024022020561747900_c35","doi-asserted-by":"publisher","first-page":"5007","DOI":"10.1063\/1.450649","article-title":"Ground-state properties of alkali dimers XY (X, Y = Li to Cs)","volume":"84","year":"1986","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c36","doi-asserted-by":"publisher","first-page":"51","DOI":"10.1016\/j.chemphys.2015.07.018","article-title":"Theoretical study of spin\u2013orbit and Coriolis coupling among the low-lying states of Rb2 and Cs2","volume":"462","year":"2015","journal-title":"Chem. Phys."},{"key":"2024022020561747900_c37","doi-asserted-by":"publisher","first-page":"283","DOI":"10.1016\/j.jqsrt.2016.01.004","article-title":"Ab initio and long-range studies of the electronic transition dipole moments among the low-lying states of Rb2 and Cs2 molecules","volume":"177","year":"2016","journal-title":"J. Quant. Spectrosc. Radiat. Transfer"},{"key":"2024022020561747900_c38","doi-asserted-by":"publisher","first-page":"104103","DOI":"10.1063\/1.1856451","article-title":"All-electron and relativistic pseudopotential studies for the group 1 element polarizabilities from K to element 119","volume":"122","year":"2005","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c39","doi-asserted-by":"publisher","first-page":"147","DOI":"10.1016\/0166-1280(91)89010-x","article-title":"Medium-size polarized basis sets for high-level-correlated calculations of molecular electric properties: III. Alkali (Li, Na, K, Rb) and alkaline-earth (Be, Mg, Ca, Sr) atoms","volume":"234","year":"1991","journal-title":"J. Mol. Struct.: THEOCHEM"},{"key":"2024022020561747900_c40","doi-asserted-by":"publisher","first-page":"5053","DOI":"10.1063\/1.448627","article-title":"A second order multiconfiguration SCF procedure with optimum convergence","volume":"82","year":"1985","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c41","doi-asserted-by":"publisher","first-page":"054101","DOI":"10.1063\/1.3609809","article-title":"A new internally contracted multi-reference configuration interaction method","volume":"135","year":"2011","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c42","volume-title":"molpro, version 2010.1, a package of ab\u00a0initio programs","year":"2010"},{"key":"2024022020561747900_c43","first-page":"63","article-title":"Shape-consistent relativistic effective potentials of small atomic cores","volume":"1","year":"2010","journal-title":"Int. Rev. At. Mol. Phys."},{"key":"2024022020561747900_c44","unstructured":"N. S.\n            Mosyagin\n           and A. V.Titov, Generalized relativistic effective core potentials, see http:\/\/www.qchem.pnpi.spb.ru\/recp."},{"key":"2024022020561747900_c45","doi-asserted-by":"publisher","first-page":"9720","DOI":"10.1063\/1.1415746","article-title":"Formulation and implementation of the relativistic Fock-space coupled cluster method for molecules","volume":"115","year":"2001","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c46","article-title":"Relativistic Fock-space coupled cluster method: Theory and recent applications","volume-title":"Reference Module in Chemistry, Molecular Sciences and Chemical Engineering","year":"2022"},{"key":"2024022020561747900_c47","doi-asserted-by":"publisher","first-page":"345","DOI":"10.1007\/s00214-003-0537-0","article-title":"Relativistic atomic natural orbital type basis sets for the alkaline and alkaline-earth atoms applied to the ground-state potentials for the corresponding dimers","volume":"111","year":"2004","journal-title":"Theor. Chem. Acc."},{"key":"2024022020561747900_c48","doi-asserted-by":"publisher","first-page":"e25772","DOI":"10.1002\/qua.25772","article-title":"Pad\u00e9 extrapolated effective Hamiltonians in the Fock space relativistic coupled cluster method","volume":"118","year":"2018","journal-title":"Int. J. Quantum Chem."},{"key":"2024022020561747900_c49","volume-title":"with contributions from","year":"2017"},{"key":"2024022020561747900_c50","doi-asserted-by":"publisher","first-page":"204104","DOI":"10.1063\/5.0004844","article-title":"The Dirac code for relativistic molecular calculations","volume":"152","year":"2020","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c51","doi-asserted-by":"publisher","first-page":"022516","DOI":"10.1103\/physreva.96.022516","article-title":"Approximate relativistic coupled-cluster calculations on heavy alkali-metal diatomics: Application to the spin-orbit-coupled A1\u03a3+ and b3\u03a0 states of RbCs and Cs2","volume":"96","year":"2017","journal-title":"Phys. Rev. A"},{"key":"2024022020561747900_c52","doi-asserted-by":"publisher","first-page":"7398","DOI":"10.1063\/1.1607313","article-title":"Potential energy, \u039b-doubling and Born\u2013Oppenheimer breakdown functions for the B1\u03a0u \u2018barrier\u2019 state of Li2","volume":"119","year":"2003","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c53","volume-title":"Numerical Recipes in Fortran 77","year":"1999"},{"key":"2024022020561747900_c54","doi-asserted-by":"publisher","first-page":"012507","DOI":"10.1103\/physreva.99.012507","article-title":"Ab initio and analytical studies of the spin-orbit coupling in heteronuclear alkali-metal dimers AB (A, B = Li, Na, K, Rb) at long ranges","volume":"99","year":"2019","journal-title":"Phys. Rev. A"},{"key":"2024022020561747900_c55","unstructured":"S.\n            Falke\n          , \u201cHigh precision spectroscopy on beams of atoms and dimers,\u201d Ph.D. thesis, Gottfried Wilhelm Leibniz Universit\u00e4t, Hannover, 2007."},{"key":"2024022020561747900_c56","doi-asserted-by":"publisher","first-page":"052510","DOI":"10.1103\/physreva.78.052510","article-title":"Adaptive analytical mapping procedure for efficiently solving the radial Schrodinger equation","volume":"78","year":"2008","journal-title":"Phys. Rev. A"},{"key":"2024022020561747900_c57","volume-title":"ARPACK User\u2019s Guide: Solution of Large Scale Eigenvalue Problems with Implicitly Restarted Arnoldi Methods","year":"1998"},{"key":"2024022020561747900_c58","year":"1999"},{"key":"2024022020561747900_c59","doi-asserted-by":"publisher","first-page":"2419","DOI":"10.1088\/0953-4075\/23\/15\/010","article-title":"The phase formalism for the one-dimensional eigenvalue problem and its relation with the quantum Bohr-Sommerfeld rule","volume":"23","year":"1990","journal-title":"J. Phys. B: At., Mol. Opt. Phys."},{"key":"2024022020561747900_c60","doi-asserted-by":"publisher","first-page":"451","DOI":"10.1134\/s0030400x18040215","article-title":"Electronic transition dipole moments in relativistic coupled-cluster theory: The finite-field method","volume":"124","year":"2018","journal-title":"Opt. Spectrosc."},{"key":"2024022020561747900_c61","doi-asserted-by":"publisher","first-page":"7899","DOI":"10.1063\/1.473804","article-title":"Long-range interaction of the 39K(4s) + 39K(4p) asymptote by photoassociative spectroscopy. I. The 0g\u2212 pure long-range state and the long-range potential constants","volume":"106","year":"1997","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c62","doi-asserted-by":"publisher","first-page":"3203","DOI":"10.1246\/bcsj.66.3203","article-title":"Energy levels and line intensities of diatomic molecules. Application to alkali metal molecules","volume":"66","year":"1993","journal-title":"Bull. Chem. Soc. Jpn."},{"key":"2024022020561747900_c63","doi-asserted-by":"publisher","first-page":"012510","DOI":"10.1103\/physreva.71.012510","article-title":"Permanent electric dipoles and \u039b-doubling constants in the lowest 1\u03a0 states of RbCs","volume":"71","year":"2005","journal-title":"Phys. Rev. A"},{"key":"2024022020561747900_c64","doi-asserted-by":"publisher","first-page":"241","DOI":"10.1140\/epjd\/e2007-00307-2","article-title":"Spectroscopy of the a3\u03a3u+ state and the coupling to the X1\u03a3g+ state of K2","volume":"46","year":"2008","journal-title":"Eur. Phys. J. D"},{"key":"2024022020561747900_c65","doi-asserted-by":"publisher","first-page":"R1569","DOI":"10.1103\/physreva.55.r1569","article-title":"Precise determination of the dipole matrix element and radiative lifetime of the 39K(4p) state by photoassociative spectroscopy","volume":"55","year":"1997","journal-title":"Phys. Rev. A"},{"key":"2024022020561747900_c66","doi-asserted-by":"publisher","first-page":"45","DOI":"10.1063\/1.453591","article-title":"Doppler-free polarization spectroscopy of the B1\u03a0u\u2212X1\u03a3g+ band system of K2","volume":"87","year":"1987","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c67","doi-asserted-by":"publisher","first-page":"074302","DOI":"10.1063\/1.1843815","article-title":"Experimental study of the 39K2 23\u03a0g state by perturbation facilitated infrared-infrared double resonance and two-photon excitation spectroscopy","volume":"122","year":"2005","journal-title":"J. Chem. Phys."},{"key":"2024022020561747900_c68","doi-asserted-by":"publisher","first-page":"485","DOI":"10.1140\/epjd\/e2007-00013-1","article-title":"Frequency measurements in the b3\u03a0(0u+) \u2212 X1\u03a3g+ system of K2","volume":"41","year":"2007","journal-title":"Eur. Phys. J. D"},{"key":"2024022020561747900_c69","doi-asserted-by":"publisher","first-page":"012503","DOI":"10.1103\/physreva.78.012503","article-title":"Potassium ground-state scattering parameters and Born-Oppenheimer potentials from molecular spectroscopy","volume":"78","year":"2008","journal-title":"Phys. Rev. A"},{"key":"2024022020561747900_c70","doi-asserted-by":"publisher","first-page":"108351","DOI":"10.1016\/j.jqsrt.2022.108351","article-title":"Intensities of KCs E(4)1\u03a3+ \u2192 (a3\u03a3+, X1\u03a3+) band system up to dissociation threshold: An interplay between spin-orbit, hyperfine and rovibronic coupling effects","volume":"292","year":"2022","journal-title":"J. Quant. Spectrosc. Radiat. Transfer"},{"key":"2024022020561747900_c71","doi-asserted-by":"publisher","first-page":"062517","DOI":"10.1103\/physreva.98.062517","article-title":"Fourier-transform spectroscopy, direct potential fit, and electronic structure calculations on the entirely perturbed (4)1\u03a0 state of RbCs","volume":"98","year":"2018","journal-title":"Phys. Rev. A"}],"container-title":["The Journal of Chemical Physics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.aip.org\/aip\/jcp\/article-pdf\/doi\/10.1063\/5.0188443\/19685638\/064307_1_5.0188443.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.aip.org\/aip\/jcp\/article-pdf\/doi\/10.1063\/5.0188443\/19685638\/064307_1_5.0188443.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,2,20]],"date-time":"2024-02-20T20:56:33Z","timestamp":1708462593000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.aip.org\/jcp\/article\/160\/6\/064307\/3263750\/Fourier-transform-spectroscopy-and-global"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,2,14]]},"references-count":71,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2024,2,14]]}},"URL":"https:\/\/doi.org\/10.1063\/5.0188443","relation":{},"ISSN":["0021-9606","1089-7690"],"issn-type":[{"value":"0021-9606","type":"print"},{"value":"1089-7690","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2024,2,14]]},"published":{"date-parts":[[2024,2,14]]},"article-number":"064307"}}