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  • 1975-1979  (3)
  • 1970-1974  (4)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Proton-Gamma-Winkelverteilungen an der Reaktion19F(p, α γ)16O (1970)
    Springer
    The European physical journal 236 (1970), S. 424-429 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The angular distributions of the 6.13 MeV γ1 transition in the reaction19F(p, α γ)16O have been measured with improved accuracy at proton energies of 873 keV and 1,374 keV using a Ge(Li) detector. The results can be fitted by Legendre polynom series witha 2=−0,018±0.008;a 4=0.000±0.008 atE p =873 keV anda 2=−0.130±0.005;a 4=+0.004±0.004 atE p =1,374 keV. From the measured Legendre coefficients α1-angular momentum mixing ratios are extracted and compared with the results from (p, α1) and (α1, γ1) correlations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01394134
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Derp 3/2-Analogzustand in51V (1970)
    Springer
    The European physical journal 238 (1970), S. 11-22 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In an investigation ofT=7/2 analogue states in51V the50Ti(p, γ) excitation curve has been measured for proton bombarding energies 1280–1480 keV and 2340–2660 keV. From the (p, γ) resonances 29 new virtual levels in the region of 9316–9510 keV excitation energy in51V were determined. The strong resonance atE p=1 371 keV has been identified as the isobaric analogue state of the51Ti ground state by determining spin and parity of this resonance to be 3/2−. There is no evidence for a strong analogue resonance in51V corresponding to the 1.16 MeV p 1/2 state in51Ti. The γ-decay of the p 3/2 analogue state has been studied by measuring branching ratios and angular distributions of primary γ-transitions with a Ge(Li) detector.M1E2 mixing ratios have been determined for these transitions. The total width of the resonance for γ-decay is found to be Γγ=1.6±0.4 eV. New bound levels in51V have been introduced at 3576, 4651 and 4661 keV excitation energy. TheJ π values of the 3085, 4770, and 4863 keV states are determined to be 5/2−, 5/2−, 3/2−, respectively. The analogue-antianalogueM1 transition strength is found to be considerably reduced compared to the situation ins-d shell nuclei.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01399574
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Structure in the beta strength function of very neutron-rich Rb-isotopes (1979)
    Springer
    The European physical journal 292 (1979), S. 73-77 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The beta strength functionS β is calculated in a schematical Brown-Bolsterli model for the Gamow-Tellerβ − decay of89–99Rb. The position of the peaks inS β resulting from the back spin flip transitions and the calculated life-times are in good agreement with recent experimental results. A simple regularity is found to govern the energy position of the lowest-lying structures inS β. By calculations of the type given here thus it should be possible to produce much more reliable input data concerningS β forr-orn-process calculations than have been used up to now in astrophysical calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01434633
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Determination of fission barrier heights from β-delayed fission (1979)
    Springer
    The European physical journal 292 (1979), S. 249-255 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Beta delayed fission (βDF) gives a possibility to investigate the fission barrier for nuclei far off beta stability. However, before any information on the fission barrier can be extracted, the effect of low-lying structures in the beta-strength function (S β) on theβDF branching ratio has to be considered. This is in general not done. In this paper the lowlying structures that occur inS β are discussed and microscopic calculations for the Gamow-Teller strength function are presented for232Th (β −-decay) and232Pu,240Cm,244,248Cf and248Fm (β +-decay). Using the calculated strength functionsβ +DF branching ratios are calculated and compared with the experimental ones. The sensitivity of the results to different shapes ofS β is investigated. It is concluded that, when the expected structures inS β are considered, there are at present no indications fromβ + DF measurements that the errors in the fission barrier calculations are larger than the uncertainty given for those calculations. The difference in magnitude between theβ − DF and theβ +DF branching ratios is also explained by the occurrence of low-lying structures inS β.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01547469
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Study of the ground state doublet in57Fe (1973)
    Springer
    The European physical journal 260 (1973), S. 247-252 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The56Fe(d,p)57Fe reaction has been studied at an incident energy of about 10 MeV. The ground state doublet of57Fe has been resolved using the Heidelberg Q 3 D magnetic spectrograph and the Minnesota split-pole spectrograph. The ratio of the spectroscopic strengths (2J+1)S for the transitions to the first excited state at 14.4 keV excitation energy (J π=3/2−) and the ground state (J π=1/2−) has been determined to be 5.80±0.5. This number is of special interest with respect to a possible deformation of the nucleus57Fe and in connection with the corresponding analogue resonances in57Co.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01395983
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Spin assignments by a high spin selective heavy ion reaction (1973)
    Springer
    The European physical journal 262 (1973), S. 83-94 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The reaction12C(14N,d)24Mg is investigated atE Lab=52 MeV by means or a multigap magnetic spectrograph. Angular distributions of levels between 6.00 and 20.21 MeV are measured using nuclear track emulsions. By quantitative analysis of the angular distributions (FRDWBA- and Hauser-Feshbach calculations), the reaction is shown to proceed almost completely via compound mechanism. The reaction is applied for selective excitation of high spin states in24Mg. Evidence is given by this example that under suitably chosen conditions a complex heavy ion reaction can be a powerful means for spin assignments at high excitation energies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01394810
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    A new possibility of identifying high-spin states at high excitation energies (1979)
    Springer
    The European physical journal 289 (1979), S. 193-196 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new method of identifying high-spin states at high excitation energies is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01435937
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    Paper (German National Licenses)
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