Theoretical study of the electronic structure of LiCs, NaCs, and KCs molecules

Korek, Mahmoud; Allouche, A.; Fakhreddine, K.; Chaalan, Ahmad

doi:10.1139/p00-074

Cited by 91 publications

(69 citation statements)

References 13 publications

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“…This is a first hint of a correct rotational numbering. Here we point out the very good quality of the theoretical calculations [6,26]; the theoretical rotational numbering needed a correction by only two or three units.…”

Section: B Laser-induced Fluorescence Fourier-transform Spectroscopymentioning

confidence: 90%

“…Among these series we choose those with similar spacing, i.e., with similar rotational quantum numbers. Based on the theoretical potential for the X 1 Σ + state [26] we make an initial guess for the vibrational and the rotational quantum numbers of these fluorescence progressions. The quantum numbers that give the closest agreement with the theoretical vibrational and rotational spacings are assigned and a small set of Dunham coefficients is fitted.…”

Section: B Laser-induced Fluorescence Fourier-transform Spectroscopymentioning

confidence: 99%

“…Initially, we start with a pointwise potential (defined in Section IV) based on the theoretical curve [26] and improve it using the procedure described in Ref. [32].…”

Section: B Laser-induced Fluorescence Fourier-transform Spectroscopymentioning

confidence: 99%

“…More recently LiCs molecules were formed on He nanodroplets and excitation spectra of the d 3 Π ← a 3 Σ + transition were recorded and modeled [25]. Ab initio potentials were calculated by Korek et al [26] (see Fig. 1) and more recently an extended theoretical study was done by Aymar and Dulieu [6].…”

Section: Introductionmentioning

confidence: 99%

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XΣ+1andaΣ+
Staanum
¹
,
Pashov
²
,
Knöckel
³

et al. 2007
Phys. Rev. A
119
9
59
2
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We present the first high-resolution spectroscopic study of LiCs. LiCs is formed in a heat pipe oven and studied via laser-induced fluorescence Fourier-transform spectroscopy. By exciting molecules through the X 1 Σ + -B 1 Π and X 1 Σ + -D 1 Π transitions vibrational levels of the X 1 Σ + ground state have been observed up to 3 cm −1 below the dissociation limit enabling an accurate construction of the potential. Furthermore, rovibrational levels in the a 3 Σ + triplet ground state have been observed because the excited states obtain sufficient triplet character at the corresponding excited atomic asymptote. With the help of coupled channels calculations accurate singlet and triplet ground state potentials were derived reaching the atomic ground state asymptote and allowing first predictions of cold collision properties of Li + Cs pairs.

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Section: B Laser-induced Fluorescence Fourier-transform Spectroscopymentioning

confidence: 90%

Section: B Laser-induced Fluorescence Fourier-transform Spectroscopymentioning

confidence: 99%

“…Initially, we start with a pointwise potential (defined in Section IV) based on the theoretical curve [26] and improve it using the procedure described in Ref. [32].…”

Section: B Laser-induced Fluorescence Fourier-transform Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

XΣ+1andaΣ+
Staanum
¹
,
Pashov
²
,
Knöckel
³

et al. 2007
Phys. Rev. A
119
9
59
2
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“…1) as well as predicted scattering lengths and Feshbach resonances which are required to simulate cold collision processes are presented in Ref's [10,11]. However, till now there is no empirical information about the excited states of KCs while ab initio potential energy curves (PECs) have been calculated for a wide range of internuclear distance in the framework of pure Hund's (a) [12,13,14] and (c) [15] coupling cases. The relevant permanent and transition dipole moment functions are also available from Ref's [13,14].…”

Section: Introductionmentioning

confidence: 99%

Fourier-transform spectroscopy and coupled-channels deperturbation treatment of theA 1Σ+–b 3Πcomplex of KCs

et al. 2010

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The laser induced fluorescence (LIF) spectra A 1 Σ + ∼ b 3 Π(E J ) → X 1 Σ + of KCs dimer were recorded in near infrared region by Fourier Transform Spectrometer with a resolution of 0.03 cm −1 . Overall more than 200 collisionally enhanced LIF spectra were rotationally assigned to 39 K 133 Cs and 41 K 133 Cs isotopomers yielding with the uncertainty of 0.003-0.01 cm −1 more than 3400 rovibronic term values of the strongly mixed singlet A 1 Σ + and triplet b 3 Π states. Experimental data massive starts from the lowest vibrational level vA = 0 of the singlet and nonuniformly cover the energy range E J ∈ [10040, 13250] cm −1 with rotational quantum numbers J ∈ [7, 225]. Besides of the dominating regular A 1 Σ + ∼ b 3 ΠΩ=0 interactions the weak and local heterogenous A 1 Σ + ∼ b 3 ΠΩ=1 perturbations have been discovered and analyzed. Coupled-channel deperturbation analysis of the experimental 39 K 133 Cs e-parity termvalues of the A 1 Σ + ∼ b 3 ΠΩ=0,1,2 complex was accomplished in the framework of the phenomenological 4 × 4 Hamiltonian accounting implicitly for regular interactions with the remote 1 Π and 3 Σ + states manifold. The resulting diabatic potential energy curves of the interacting states and relevant spin-orbit coupling matrix elements defined analytically by Expanded Morse Oscillators model reproduce 95% of experimental data field of the 39 K 133 Cs isotopomer with a standard deviation of 0.004 cm −1 which is consistent with the uncertainty of the experiment. Reliability of the derived parameters was additionally confirmed by a good agreement between the predicted and experimental termvalues of 41 K 133 Cs isotopomer. Calculated relative intensity distributions in the A ∼ b → X LIF progressions are also consistent with their experimental counterparts. Finally, the deperturbation model was applied for a simulation of pump-dump optical cycle a 3 Σ + → A 1 Σ + ∼ b 3 Π → X 1 Σ + proposed for transformation of ultracold colliding K+Cs pairs to their ground molecular state vX = 0; JX = 0.

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Leishmanial lipid suppresses tumor necrosis factor α, interleukin‐1β, and nitric oxide production by adherent synovial fluid mononuclear cells in rheumatoid arthritis patients and induces apoptosis through the mitochondrial‐mediated pathway

Majumdar

Banerjee

Ratha

et al. 2008

Arthritis & Rheumatism

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Results. Leishmanial lipid inhibited the release of tumor necrosis factor ␣, interleukin-1␤, and NO in the culture, decreased their cytosolic protein levels, and decreased NF-B p65 levels in SFMCs, in a dosedependent manner. It had the reverse effect on interleukin-10 levels. Leishmanial lipid-induced apoptosis involved the activation of caspase 3, caspase 9, and Bax, the release of cytochrome c, the alteration of mitochondrial membrane potential, and the downregulation of Bcl-2.Conclusion. These results suggest that leishmanial lipid has strong antiinflammatory and apoptosisinducing effects on SFMCs from patients with RA, and that apoptosis occurs via the mitochondrial pathway.

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Theoretical study of the electronic structure of LiCs, NaCs, and KCs molecules

Abstract: International audienc

Cited by 91 publications

References 13 publications

XΣ+1andaΣ+
Staanum
¹
,
Pashov
²
,
Knöckel
³

et al. 2007
Phys. Rev. A
119
9
59
2
View full text Add to dashboard Cite

XΣ+1andaΣ+
Staanum
¹
,
Pashov
²
,
Knöckel
³

et al. 2007
Phys. Rev. A
119
9
59
2
View full text Add to dashboard Cite

Fourier-transform spectroscopy and coupled-channels deperturbation treatment of theA 1Σ+–b 3Πcomplex of KCs

Leishmanial lipid suppresses tumor necrosis factor α, interleukin‐1β, and nitric oxide production by adherent synovial fluid mononuclear cells in rheumatoid arthritis patients and induces apoptosis through the mitochondrial‐mediated pathway

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Theoretical study of the electronic structure of LiCs, NaCs, and KCs molecules

Abstract: International audienc

Cited by 91 publications

References 13 publications

XΣ+1andaΣ+Staanum1, Pashov2, Knöckel3 et al. 2007Phys. Rev. A1199592View full textAdd to dashboardCite

XΣ+1andaΣ+Staanum1, Pashov2, Knöckel3 et al. 2007Phys. Rev. A1199592View full textAdd to dashboardCite

Fourier-transform spectroscopy and coupled-channels deperturbation treatment of theA 1Σ+–b 3Πcomplex of KCs

Leishmanial lipid suppresses tumor necrosis factor α, interleukin‐1β, and nitric oxide production by adherent synovial fluid mononuclear cells in rheumatoid arthritis patients and induces apoptosis through the mitochondrial‐mediated pathway

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About

XΣ+1andaΣ+
Staanum
¹
,
Pashov
²
,
Knöckel
³

et al. 2007
Phys. Rev. A
119
9
59
2
View full text Add to dashboard Cite

XΣ+1andaΣ+
Staanum
¹
,
Pashov
²
,
Knöckel
³

et al. 2007
Phys. Rev. A
119
9
59
2
View full text Add to dashboard Cite