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  • 1
    Electronic Resource
    Electronic Resource
    Study of the LiZn excimer: Blue–green bands (1992)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 96 (1992), S. 7364-7371 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We performed a study of the LiZn excimer formed in the photochemical reaction of Li2(C 1Πu) with Zn(4 1S0). The Li2(C 1Πu) molecules were prepared by excitation with either a dye laser in the region from 348 to 377 nm or an excimer laser at 308 nm. We observed bound–free emission of LiZn at 477 nm. Nonrelativistic ab initio calculations of the potential energy curves and the relevant dipole transition moments have been performed. Using these results in spectral simulations the observed emission is interpreted as belonging to the 2 2Π–X 2Σ+ transition of the LiZn molecule.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.462439
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  • 2
    Electronic Resource
    Electronic Resource
    The 458 nm diffuse band of the lithium dimer (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 90 (1989), S. 2841-2847 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Laser induced fluorescence studies of the lithium diffuse band at 458 nm were performed using single-and double-photon excitations. Single-photon excitation was performed using UV lines of Ar++ and Kr++ lasers, and the diffuse band fluorescence was induced by collisions in 7Li2 and 6Li2. The double-photon excitation process populated relevant upper states through several accidental coincidences for two-step excitation in 7Li2. In two cases, in addition to structured continuum emission, an adjacent line spectrum was observed. In five other cases, two-photon accidental coincidences produced collision induced fluorescence of the 7Li2 diffuse band. We also found (in a few cases) that the (two-photon) excitation energy of the 2 3Πg state (with respect to the 1 3Σ+u state) was collisionally transferred to simultaneously excited lithium 2p atoms, thus creating a lithium atom in the 4d state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.455936
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  • 3
    Electronic Resource
    Electronic Resource
    The NaZn excimer: Blue–green band (1993)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 98 (1993), S. 4672-4679 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Electronically excited NaZn excimers have been produced in a photochemical reaction of Na2(C 1Πu) with Zn(4 1S0). The Na–Zn vapor mixture was prepared by introducing a controlled stream of sodium vapor into zinc vapor generated in a heat-pipe oven. A new band (bound–free transition) was observed in the region from 450 to 487 nm. Potential curves of the eight lowest electronic states of NaZn were calculated. On the basis of the calculations, the observed emission is interpreted as resulting from the 2 2Π–X 2Σ+ transition. The conditions favorable for the observation of the photochemical reaction are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.464971
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  • 4
    Electronic Resource
    Electronic Resource
    Quantum simulation of bound-free spectra (1992)
    Springer
    The European physical journal 23 (1992), S. 165-170 
    Details
    ISSN: 1434-6079
    Keywords: 33.40.-e ; 32.70.-n ; 34.20.Fi
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have performed quantum simulations of the 23Π g −13Σ u + bound-free transition. Assuming Boltzmann and different non-Boltzmann distributions for the population in the 23Π g state, we have calculated the corresponding spectral shapes. The results show that the shape of the emission spectrum can be used to obtain information about the population distribution within rovibration levels of the upper state. Comparison with several experiments is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01436740
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  • 5
    Electronic Resource
    Electronic Resource
    Visible-laser-induced chemiluminescence of NaHg red excimer bands (1991)
    Springer
    The European physical journal 18 (1991), S. 373-377 
    Details
    ISSN: 1434-6079
    Keywords: 31.50 ; 35.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Visible argon ion laser lines were used to induce the chemiluminescence of the NaHg excimer. Sodium dimers, excited into theB 1Π u state, produced in reactive collision with Hg atoms the NaHg excimers in the first excited electronic states. A qualitative analysis of the origin of the observed spectra, based on ab initio NaHg potential curves calculations, is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01426600
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  • 6
    Electronic Resource
    Electronic Resource
    Observations and spectral simulations of the7Li2 21 Σ u + →X 1 Σ g + transition (1993)
    Springer
    The European physical journal 28 (1993), S. 135-140 
    Details
    ISSN: 1434-6079
    Keywords: 33.10 ; 33.20.—k ; 33.80.—k
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The7Li2 21 Σ u + →X 1 Σ g + electronic transition has a bound-bound and a bound-free part due to the double minimum nature of the upper 21 Σ u + state. We have studied this transition both experimentally and by performing spectral simulations. When inner well was excited the bound-free part at 4525 Å was observed due to the collisions between Li 2 * and argon. We found that when levels above the barrier are excited the bound-free emission is strongly affected by collisional relaxation of Li 2 * by Li atoms. Conditions for the observation of the bound-free part are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01436980
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  • 7
    Electronic Resource
    Electronic Resource
    Spectral simulation and interpretation of LiZn and LiCd blue-green emission (1994)
    Springer
    The European physical journal 30 (1994), S. 39-44 
    Details
    ISSN: 1434-6079
    Keywords: 33.10. − n ; 33.20.Kf ; 33.80.Gj ; 34.50.Ez
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Excited LiZn and LiCd molecules are produced in a photochemical reaction between Li2(C1Πu) molecules and zinc or cadmium atoms. Changes in shape of the blue-green emission are observed by increasing the total vapor pressure in the heat pipe oven. Quantum mechanical spectral simulations are carried out for the relevant 22Π →X 2Σ+ transitions. Both bound-bound and bound-free types of transitions are found to play an important role in the overall blue-green spectra. For high collision frequencies (high total vapor pressure) the simulated spectra show very good agreement with observations if a thermal distribution in the 22Π states is assumed. In this case bound-bound transitions are dominant. The results for low collision frequencies indicate that the nascent distribution is non-Boltzmann and that bound-free transitions are dominant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01437477
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