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  • 1
    Electronic Resource
    Electronic Resource
    Intermolecular potential for vibrationally excited CH3F measured by light-induced drift (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 90 (1989), S. 6143-6145 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: From changes in the diffusion coefficient upon vibrational excitation of CH3F in He, Ne, Ar, Kr, and Xe, as measured by light-induced drift, the intermolecular potential between two vibrationally excited CH3F molecules is determined on the basis of simple combination rules. The main effect of vibrational excitation is found to be an increase in potential well depth by 3%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.456329
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  • 2
    Electronic Resource
    Electronic Resource
    Laser-induced forces on small objects in a resonant background gas (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 3299-3303 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A laser tuned into the Doppler wing of an absorption line in a low-pressure gas creates a flux of excited molecules. If these deexcite on the surface of a suspended micrometer-sized particle, internal-to-translational energy conversion produces a recoil force on the micro-particle. This new type of force is investigated in a pilot experiment. As a resonant gas we use HF or CH3F. An odd-in-detuning force on a 20 μm diameter probe wire simulating the particle is indeed observed. Possible applications are discussed. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.364314
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  • 3
    Electronic Resource
    Electronic Resource
    Intermolecular versus intramolecular interactions in nuclear spin conversion: Experiments on 13CH3F–O2 (1995)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 103 (1995), S. 5161-5163 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Ortho–para conversion for gaseous 13CH3F is measured in mixtures with O2. As collision partner, O2 is found to be 4 times less efficient for conversion that CH3F itself. This demonstrates that intramolecular rather than intermolecular magnetic interactions provide the main pathway leading to nuclear spin conversion for such molecules. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.470605
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  • 4
    Electronic Resource
    Electronic Resource
    NUCLEAR SPIN CONVERSION IN POLYATOMIC MOLECULES (1999)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physical Chemistry 50 (1999), S. 315-345 
    Details
    ISSN: 0066-426X
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract Except for ortho- and para-H2, little is known about nuclear spin isomers (or spin modifications) of molecules. The main reason is the lack of practical enrichment techniques. Recently, a few enrichment methods were developed, which opened up new possibilities in the field. These methods are briefly reviewed. Substantial progress in the field has been made by the introduction of light-induced drift as a gas-phase separation tool. This is illustrated by extensive data on CH3F, which reveal that the gas-phase ortho-para conversion is governed by intramolecular mixing of the nuclear spin states. The role of direct ortho-para transitions is small. Various aspects of the conversion were investigated in detail: pressure and collision partner dependence, isotope effect, and temperature dependence. The most decisive information on the spin conversion mechanism is derived from the observation of level-crossing resonances in an electric field and the quantum Zeno effect induced by collisions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.physchem.50.1.315
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  • 5
    Electronic Resource
    Electronic Resource
    Excimer ArF/XeF lasers providing high-power stimulated radiation in Ar/Xe and F lines (1977)
    Springer
    Applied physics 14 (1977), S. 231-233 
    Details
    ISSN: 1432-0630
    Keywords: 42.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Lasing in atomic lines of noble gases and fluorine, prior to excimer radiation, was observed in an electric discharge ArF/XeF excimer laser. Some Ar/Xe lines end at metastable levels, which are very important for the formation of ArF/XeF excimer molecules. Five new lasing lines of atomic fluorine have been obtained. Consideration is given to the use of lasing in atomic and molecular lines, that occurs in one burst, in investigations of the excitation kinetics of excimer states under the conditions of a high-pressure electric discharge.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00883096
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