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  • 1960-1964  (4)
  • 1955-1959  (2)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Neutrinorückstoßexperiment am Li8 (1959)
    Springer
    The European physical journal 155 (1959), S. 547-559 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The beta-decay of Li8→Be8*→2α is especially suitable in neutrino recoil experiments on account of the large beta-decay energy available and on account of the subsequent break up of Be8* into two α-particles. For the angular correlation between the antineutrino and the α-particle one obtains for our counter geometry and a Gamow-Teller interaction the angular distributionw(v)dv=(1+b v/c 0.707 cosv)dv, whereb=−1 for axial vector interaction (A) orb=+1 for tensor interaction (T) and wherev is the angle between the direction of emission of the antineutrino and the α-particle. The measurement of the energy difference of the two α-particles in the Be8* decay, when the direction of the emission of the beta-particle is fixed, defines the angular correlation coefficientb. In this experiment the value ofb is found to be equal to −1.12±0.20, which shows axial vector interaction in the Gamow-Teller decay.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01326863
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Elastische und unelastische Streuung von Deuteronen an Aluminium bei 11,8 MeV (1960)
    Springer
    The European physical journal 159 (1960), S. 149-154 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using the 11.8 MeV deuteron beam of a cyclotron, a study has been made of the angular dependence of the deuteron spectrum from interactions on Al27. Separation of the deuterons from other products of the deuteron reactions was accomplished by recordingdE/dx, measured by a three fold proportional counter, andE, measured by a CsI-counter, on an oscilloscope screen. The experimental inelastic angular distributions have the shape of a direct interaction process. The elastic angular distribution shows pronounced diffraction maxima.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01338342
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Elastische und unelastische Streuung von Deuteronen an Sr, Zr, Nb, Pd und Ag bei 11,8 MeV (1963)
    Springer
    The European physical journal 174 (1963), S. 326-336 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Continuing previous experiments on the elastic and inelastic scattering of 11·8MeV deuterons on medium weight nuclei, Sr, Zr, Nb, Pd, and Ag targets have been studied. In addition to elastically scattered deuterons, angular distributions of inelastically scattered deuterons have been obtained for one group in Sr, and three groups in Zr and Nb, respectively, between 20° and 165°. The correlation between the diffraction maxima is discussed in terms ofBlair's phase rule. As in our previous results, this rule works poorly in the comparison between elastic and inelastic angular distributions. However the strongly excited inelastic groups which are interpreted as collective vibrational states do follow this rule. In the case of Pd and Ag, energy spectra at several scattering angles have been measured. The integrated differential cross sections of the inelastically scattered deuterons atΘ=90° of all investigated elements are compared with those of previous measurements. They show the influence of closed shells but no systematic decrease or increase with increasing atomic weight.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01378606
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Ein richtungsempfindliches Zählrohr und seine Anwendung beim Li8→Be8*-Zerfall (1959)
    Springer
    The European physical journal 155 (1959), S. 560-565 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new type of proportional counter having a directional dependent efficiency has been used to measure the angular distribution of the α-particles of Be8 in the reaction Li8→Be8*. From the experiment an upper limit of 10% for the amount of the Fermi contribution in the Li8 beta-decay is deduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01326864
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Nachweis eines Fermi-Anteils beim β-Zerfall des Ar41 durch Polarisations-Korrelations-Messungen (1960)
    Springer
    The European physical journal 157 (1960), S. 586-591 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung The correlation betweenβ-particles and circular polarizedγ-radiation was measured for the J→Jβ −-transition Ar41–K41. Gaseous sources were used. A correlation coefficientA=(+0,33±0,07) was found. From this, a ratio of Gamow-Teller to Fermi matrix elementM G /M F =+2,3 −1,3 +0,9 and a Fermi matrix element MF= 0,09±0,04 is derived. The result shows a deviation from theΔT=0 isotopic spin selection rule for Fermi transitions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01340716
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Elastische und unelastische Streuung von Deuteronen an C, Mg, Ti, Fe, Ni, Cu und Zn bei 11,8 MeV (1961)
    Springer
    The European physical journal 161 (1961), S. 509-524 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The spectra of deuterons scattered from C, Mg, Ti, Fe, Ni, Cu and Zn have been measured in steps of 5° betweenΘ lab=20° and 165°. The excitation of the lowest levels is in most nuclei strongly preferred and only very few low energy deuterons were observed. The angular distributions of the elastic and inelastic scattering of deuterons show pronounced diffraction maxima which are partly correlated. The correlation is compared with the Blair-model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01341549
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    Paper (German National Licenses)
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