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  • 33.20E  (1)
  • Far-infrared (FIR)  (1)
  • Fourier transform infrared spectroscopy  (1)
  • far-infrared (FIR) lasers  (1)
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Material
Years
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Confirmation of far infrared laser assignments from CH3-deformation and CH3-rocking states of optically pumped methanol (1988)
    Springer
    Applied physics 47 (1988), S. 319-324 
    Details
    ISSN: 1432-0649
    Keywords: 33.20E ; 42.55H
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High-resolution Fourier transform spectroscopy has been applied to confirm previously proposed assignments for nine far infrared (FIR) laser lines from the CH3-deformation state of CH3OH and one line from the CH3-rocking state. Accurate frequencies are deduced for the observed and other predicted FIR laser transitions. FIR torsional branch frequencies in the ground state which were used in the confirmation are presented. Comments are also made on the OH-bending mode of CH3OH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00716093
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Far infrared spectrum of CD3OH methanol from 40–220 CM−1 (1993)
    Springer
    International journal of infrared and millimeter waves 14 (1993), S. 1727-1753 
    Details
    ISSN: 1572-9559
    Keywords: Far-infrared (FIR) ; spectra ; methanol ; CD3OH ; torsion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Fourier transform far-infrared (FTFIR) spectrum of CD3OH has been obtained from 40–220 cm−1 at a resolution of 0.002 cm−1, and partially analyzed. Numerousb-type branches have been assigned in the spectrum, ranging over torsional states fromn=0 to 3. The branches have been fitted toJ(J+1) power-series energy expansions in order to obtainJ-independent branch origins. These in turn have been fitted to the torsion-rotation Hamiltonian, and improved molecular constants have been obtained for the ground vibrational state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02101329
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Line positions and intensities in theν 2 band of D2O improvied pumped D2O laser frequencies (1985)
    Springer
    International journal of infrared and millimeter waves 6 (1985), S. 199-233 
    Details
    ISSN: 1572-9559
    Keywords: Fourier transform infrared spectroscopy ; Deuterated water vapor ; Laser frequencies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using high resolution Fourier transform spectra, thev 2 band of D2O has been analysed leading to an extensive and precise set of rotational energy levels of the (0 1 0) vibrational state. These levels are reproduced very satisfactorily with a Watson type Hamiltonian and precise rotational constants as well as the band centerv 2 = 1178.3789 ± 0.0005 cm-1 are determined. A total of 61 line intensities were measured, much attention being paid to a possible contamination of the D2O sample by HDO. A least squares fit of the intensity data has provided us with an expansion of the transition moment operator of thev 2 band from which the first derivative $$\left( {\frac{{\partial ^x \mu }}{{\partial q_2 }}} \right)_e $$ = 0.1690 ± 0.0030 D has been deduced. Finally the complete synthetic spectrum of this band has been computed. All these results have been used to derive improved frequencies for the known pumped and far-infrared laser lines of D2O and to predict new possible coincidences with the available CO2 laser lines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01010358
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Assignments of far-infrared laser lines in the CO-stretching state of 0–18 methanol (1994)
    Springer
    International journal of infrared and millimeter waves 15 (1994), S. 1883-1906 
    Details
    ISSN: 1572-9559
    Keywords: far-infrared (FIR) lasers ; FTIR spectroscopy ; methanol ; torsion ; CH3 18OH
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Far-infrared (FIR) laser and infrared pump transitions of the O-18 isotopic species of methanol have been assigned for a number of CO2 laser pump lines with the aid of high-resolution Fourier transform spectra in the FIR and CO-stretch band regions. The structures of the FIR laser energy level systems and the transition assignments were established through the use of closed transition combination loops, which also yield improved accuracies for the FIR laser wavenumbers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02096057
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    Paper (German National Licenses)
    Fulltext
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