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  • 1
    Electronic Resource
    Electronic Resource
    Stellar reaction rate of26Mg(p, γ)27Al (1980)
    Springer
    The European physical journal 296 (1980), S. 273-280 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The reaction26Mg(p, γ)27Al has been investigated atE p (lab)=80–355 keV. The existence of the resonances atE p =292 and 338 keV has been verified and new resonances were found atE p =227 and 275 keV. Information on branching and mixing ratios,ωγ values, total widths, andJ π assignments for the observed resonances is given. Upper limits on theωγ strengths for expected resonances in the energy range covered are presented. The astrophysical aspects of the data are discussed in the light of the26Mg(26Al) isotopic anomaly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01415841
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The3He(α,γ)7Be reaction and the solar neutrino problem (1982)
    Springer
    The European physical journal 304 (1982), S. 307-332 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The capture reaction3He(α,γ)7Be has been investigated in the energy range ofE c.m. =107 to 1,266 keV. The4He or3He beams of up to 300 μA particle current were incident on3He or4He gas targets, respectively. The gas target systems were all of the windowless and recirculating type. Excitation functions have been obtained with the use of an extended-static gas target, while the measurements ofγ-ray angular distributions involved a quasi-point supersonic jet system. The determination of absolute cross sections has been carried out with both types of gas target systems. Theγ-ray yields in the3He(α,γ)7Be reaction were detected using 80 cm3 Ge(Li) detectors. The data lead to a zero-energy intercept of the astrophysicalS(E) factor ofS(0)=0.30±0.03 keV-b. This result reduces the calculated solar neutrino rate by a factor of 1.76.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01421513
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Resonance strengths of some light nuclei (1982)
    Springer
    The European physical journal 305 (1982), S. 319-323 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The strengths of theE c.m.=324 and 829 keV resonances in19F(ρ, αγ)16O have been determined relative to the Rutherford elastic scattering cross section. With these values as standards, the strengths of theE c.m.=259, {pp143} (also 1,106) and 1,259 keV resonances in14N(ρ, γ)15 O,18O(ρp, γy)19F and14N(α, γ)18F were measured, respectively. In addition, the cross section of the direct capture process in16O(ρ, γ)17F atE c.m.=853 keV has been obtained. All measurements were carried out by interchanging the role of projectiles and target nuclei, i.e.14N,16O,18O and19F ion beams of appropriate energies were guided into windowless gas target systems filled with hydrogen or helium gas. The results are compared with previous work.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01419080
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    Paper (German National Licenses)
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