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  • 1
    Electronic Resource
    Electronic Resource
    Determination of the Na–Kr interaction potential in the XΣ and AΠ state by laser spectroscopy (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 94 (1991), S. 5865-5874 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We have extended our previous laser spectroscopic investigation of the AΠ–XΣ transition of the van der Waals molecule NaKr84. Our experimental data consist now of about 1300 absorption lines and of the spectral intensity distribution of the fluorescence light. Spectroscopic parameters have been derived for the vibrational states 0,...,2 of the XΣ state and 7,...,14 of the AΠ state. The interatomic potentials of the XΣ and the AΠ states have been determined in a fully quantum-mechanical approach using analytical HFD or Tang–Toennies functions. For the equilibrium distance and the well depth we obtain 4.918(4) A(ring), 68.4(5) cm−1 for XΣ and 3.03(4) A(ring), 3.05(4) A(ring) and 795(25) cm−1, 760(20) cm−1 for AΠ1/2 and AΠ3/2, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.460470
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  • 2
    Electronic Resource
    Electronic Resource
    High-resolution laser spectroscopy of LiAr: Improved interaction potential and spin-rotation-coupling in the ground state X 2Σ+ (2001)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 115 (2001), S. 7892-7896 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The spin-rotation coupling constant γ has been determined to be −0.15(6)⋅10−3 cm−1 for vibrational levels v=0, 1, and 2 of the X 2Σ+ state of 7LiAr by means of an analysis of the high-resolution absorption spectrum due to the A←X transition in the 670–677 nm region. All rovibrational levels of the X 2Σ+ state have been observed, and improved values have been obtained for the spectroscopic parameters of vibration and rotation. In addition, the dispersed fluorescence A→X has been recorded by populating selectively a particular rovibrational level of the A state. Using all experimental data, an improved X 2Σ+ interaction potential has been determined for 7LiAr, which is provided in the form of an analytical Hartree-Fock-Dispersion function. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1407275
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  • 3
    Electronic Resource
    Electronic Resource
    High-resolution laser spectroscopy of LiAr: Spectroscopic parameters and interaction potentials of the A 2∏ and the B 2∑ states (2001)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 114 (2001), S. 3035-3045 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The absorption spectrum of the LiAr molecule has been recorded with high resolution using a supersonic beam and applying the method of laser-induced fluorescence. Altogether, about 1400 absorption lines due to the transitions A 2∏←X 2∑ and B 2∑←X 2∑ of the two isotopomers 7Li40Ar and 6Li40Ar could successfully be assigned. The spectroscopic parameters of vibration and rotation, of spin-orbit splitting, and of λ-type doubling have been obtained for vibrational levels 5–10 of A 2∏ and 0–3 of B 2∑. Using the observed rovibrational energies as input data the interatomic potentials of both electronic states have been determined in form of analytical functions by means of a fully quantum-mechanical method of approach. For the equilibrium values we get Re=2.50(8) Å, De=957(30) cm−1 for A 2∏ and Re=6.24(5) Å, De=33.8(1.0) cm−1 for B 2∑. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1340565
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    Paper (German National Licenses)
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