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  • 1985-1989  (3)
  • 97.10  (2)
  • 25.90  (1)
  • 24.30
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  • 1
    Electronic Resource
    Electronic Resource
    The triple-alpha-reaction at low temperatures (1986)
    Springer
    The European physical journal 324 (1986), S. 147-152 
    Details
    ISSN: 1434-601X
    Keywords: 97.10 ; 97.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have studied the triple-α-reaction at low temperatures which is of importance on accreting white dwarfs and neutron stars. Although we have improved a recent investigation of Nomoto, Thielemann and Miyaji on several points, we find a reaction rate for the relevant temperature range (T=107−108K) which is rather similar to the previous result. In particular, our improved study confirms that helium might be ignited on accreting white dwarfs at temperaturesT≦4.107 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01325126
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of electron screening on low-energy fusion cross sections (1987)
    Springer
    The European physical journal 327 (1987), S. 461-468 
    Details
    ISSN: 1434-601X
    Keywords: 25.90 ; 97.10.Cv
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The effects of electron screening on the low-energy cross sections of nuclear fusion reactions of astrophysical interest have been studied within the Born-Oppenheimer approximation using a simplified model. These studies indicate that a significant enhancement of the cross sections can occur already at beam energies, which are about a factor 100 higher than the electron binding energies. Cross sections near such energies can now be measured, in some cases, and several examples are discussed. For an understanding of the low-energy data as well as for a reliable extrapolation of the cross sections (for bare nuclei) to lower energies, the effects of electron screening must be well understood.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01289572
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The proton capture reactions on21Na and22Na under hydrogen burning conditions (1986)
    Springer
    The European physical journal 325 (1986), S. 309-315 
    Details
    ISSN: 1434-601X
    Keywords: 25.40 ; 97.10
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have updated and recalculated the21Na(p, γ)22Mg and22Na(p, γ)23Mg reaction rates for temperatures 107–109 K relevant for explosive hydrogen burning in stellar environment. We find the21Na(p, γ)22Mg rate lower than recently suggested. Considering various uncertainties in spin and parity assignments of the low energy22Na+p resonances we present upper and lower limits for the22Na(p, γ)23Mg reaction rate which, however, allows for a meaningful discussion of the consequences of the new rates on the Ne - Na cycle under various stellar conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294614
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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