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Determination of a-nucleus potentials by alpha-elastic scattering and its implications for the gamma-process
(2003-05-19)
Complete angular distributions for the reactions Sn-112,Sn-124(alpha,alpha)(112,124) Sn have been measured at different energies around the Coulomb barrier. Preliminary results for the Sn-112 circle times alpha and Sn-124 ...
alpha-nucleus potentials and photon-induced nucleosynthesis
(2003-05-05)
New data for the Sn-112,Sn-12 4(alpha,alpha) (112,124) Sn reaction have been measured and are presently analyzed. Results of the Sn-112 circle times alpha potential at the energy Ec.m approximate to 14 MeV are presented. ...
Measurement of the (gamma, n) cross section of the nucleus Au-197 close above the reaction threshold
(2002-08-26)
The cross section and the astrophysical reaction rate of the reaction Au-197(gamma,n)Au-196 have been measured close above the reaction threshold at E-thr = 8.071 MeV using the method of photoactivation. The results are ...
Mo-92(alpha,alpha)Mo-92 scattering, the Mo-92-alpha optical potential, and the Ru-96(gamma,alpha)Mo-92 reaction rate at astrophysically relevant energies
(2001-12)
The elastic scattering cross section of (MO)-M-92(alpha,alpha)Mo-92 has been measured at energies of E-c.m. approximate to 13, 16, and 19 MeV in a wide angular range. The real and imaginary parts of the optical potential ...
Measurement of the (gamma,n) reaction rates of the nuclides Pt-190, Pt-192, and Pt-198 in the astrophysical gamma process
(2001-05)
The nucleosynthesis of heavy neutron-deficient nuclei in a stellar photon bath at the temperatures relevant for the astrophysical gamma process was investigated. In order to derive (gamma ,n) cross sections and reaction ...
Experimental simulation of a stellar photon bath by bremsstrahlung: the astrophysical gamma-process
(2000-08-31)
The nucleosynthesis of heavy proton-rich nuclei in a stellar photon bath at temperatures of the astrophysical gamma-process was investigated where the photon bath was simulated by the superposition of bremsstrahlung spectra ...