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  • 1
    Electronic Resource
    Electronic Resource
    Band structures in73Se (1991)
    Springer
    The European physical journal 340 (1991), S. 141-153 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Re ; 23.30.Lv ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Excited states of73Se have been investigated up to spin, 21/2 using techniques of in-beamγ-ray spectroscopy in connection with the70Ge(α, n) reaction. Mean lifetimes of 12 levels have been determined applying Doppler-shift andγ-RF-methods. Five different bands have been identified that reflect a variety of different excitation modes. The decoupled 9/2+ band is likely to correspond to an oblate deformation while the 5/2+ band is interpreted as a strongly coupled prolate band built on the Nilsson configuration [422] 5/2+. The 3/2− band is a strongly coupled band built on the [301] 3/2} configuration.Nuclear reactions:70Ge(α,n),E=14, 16, 18, 19, 20MeV; measuredE γ,I γ,σ(E γ,θ),γγ-coin, linear polarization, DSA,γ(t).75Se deduced levels,I, π, τ, δ(E2/M1), B(σλ). Enriched targets, Ge detectors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01303825
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  • 2
    Electronic Resource
    Electronic Resource
    Enantiomer separation of side-chain fluorinated alkylbenzenes by capillary gas chromatography on cyclodextrin phases (1994)
    Springer
    Chromatographia 39 (1994), S. 192-199 
    Details
    ISSN: 1612-1112
    Keywords: Gas chromatography ; Enantiomer separation ; Permethylated cyclodextrin stationary phases ; Side-chain fluorinated alkylbenzenes ; Thermodynamic data
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The separation of racemic side-chain fluorinated alkylbenzenes and bromofluorinated analogues by capillary gas chromatography using permethylated α, β and γ-cyclodextrins dissolved in polysiloxanes of different polarity as stationary phases is described. The influence of the achiral polysiloxane matrices on the separation of enantiomers is discussed in the light of the results obtained with the different phases. For a part of the tested compounds thermodynamic data are determined which describe the interaction of enantiomers with the stationary phase. The mechanism of separation is discussed on this basis and by comparison with data for structurally similar compounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02274500
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  • 3
    Electronic Resource
    Electronic Resource
    73 Se investigated by the (α, nγ) reaction (1990)
    Springer
    The European physical journal 336 (1990), S. 241-242 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Re ; 23.20.Lv ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The70Ge(α,nγ)73Se reaction was used to populate medium spin states of the73Se nucleus. Spins and parities up to about Iπ=(21/2+)ħ were determined by gamma angular distribution, gamma linear polarization and excitation function measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290628
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  • 4
    Electronic Resource
    Electronic Resource
    High spin states in126Xe (1988)
    Springer
    The European physical journal 330 (1988), S. 221-222 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Re ; 23.20.Lv ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High spin states of126Xe have been populated by means of the116Cd(13C, 3n) reaction using the OSIRIS-12 detector system. A level scheme consisting of 13 bands has been established. More than 40 new levels were observed and several spin and parity assignments could be made. Experimental Routhians and alignments of selected bands are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01293399
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  • 5
    Electronic Resource
    Electronic Resource
    Two-quasiparticle bands in126Ba (1987)
    Springer
    The European physical journal 327 (1987), S. 251-265 
    Details
    ISSN: 1434-601X
    Keywords: 21.10−k ; 21.10.Hw ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High spin states of126Ba have been populated via the116Sn (13C, 3n) reaction and were investigated by inbeam gamma-ray spectroscopy. Partially NaJ (Tl)-BGO anti-compton shields were used. Two positive parity band crossings were established. The yrast band was observed up to a tentative 18+ level. The gamma-bands and two band structures of negative parity were found. In addition a tentative 3− state has been seen. Two-quasiparticle Routhians are constructed from the one-quasiparticle Routhians of the bands in the odd neighbouring isotopes and isotones and are compared to the ones observed in126Ba. This leads to ah 11/2 g 7/2-neutron structure of the strongly coupled negative parity bands and a two-quasiproton structure of the decoupled bands of negative parity. The branching and mixing ratios for the neutron bands are analyzed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01284448
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  • 6
    Electronic Resource
    Electronic Resource
    High spin states in128Ba (1987)
    Springer
    The European physical journal 328 (1987), S. 15-18 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Re ; 23.20.Lv ; 27.60.+ j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High spin states of128Ba have been investigated by means of the OSIRISγ-spectrometer with 6 asymmetric anti-compton shields and one additional germanium detector. The110Pd(22Ne, 4n) reaction was used at 96 MeV. Several new high spin states and a new band have been established. The onset of the ph 11 2/2 nh 11 2/2 4 quasiparticle band has possibly been found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01295177
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  • 7
    Electronic Resource
    Electronic Resource
    Investigation of gas chromatographic interaction mechanism on permethylated cyclodextrins by molecular modelling (1996)
    Springer
    Chromatographia 43 (1996), S. 187-194 
    Details
    ISSN: 1612-1112
    Keywords: Gas chromatography ; Molecular modelling ; Molecular mechanics calculations ; Permethylated α-, β- and γ-cyclodextrins ; Interaction mechanism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The capillary gas chromatographic retention behavior of α-pinene and tricyclene has been investigated on stationary phases of different polarities. On all but one of the columns employed, tricyclene eluted before α-pinene; only permethylated β-cyclodextrins dissolved in moderately polar polisiloxanes gave a reversed elution order. The intermolecular interactions which caused the unexpected retention behavior were investigated in detail, applying methods of computer simulation. To achieve this, we have developed a calculation algorithm on the basis of molecular mechanical optimizations and programmed it in a macro. This makes it possible to systematically investigate a given configuration space in which all the possible interactions can take place. It was shown that permethylated β-cyclodextrin as host molecule for both guest molecules offers an optimum cavity size. As a result the number of energetically favorable contacts between host and guest molecules as well as the strength of the interactions in this stationary phase were larger. As a consequence the elution order, normally only influenced by the vapor pressure of the compounds at a given temperature, was changed. Nonspecific interactions played an especially important role for these kinds of substances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02292949
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