Zobrazeno 1 - 10
of 60
pro vyhledávání: '"H. Herndl"'
Publikováno v:
Physical Review C. 58:1798-1803
Updated stellar rates for the reaction {sup 23}Mg(p,{gamma}){sup 24}Al are calculated by using all available experimental information on {sup 24}Al excitation energies. Proton and {gamma}-ray partial widths for astrophysically important resonances ar
Autor:
Jean Vanhorenbeeck, P. Duhamel, H. Herndl, Michel Gaelens, Freddy Binon, W. Galster, H. Oberhummer, Cs. Sükösd, Alain Ninane, J.S. Graulich, C.R. Bain, Marc Huyse, G. Vancraeynest, Robert Page, Alan Shotter, Michael Wiescher, Philip Woods, E. Liénard, Patrick Decrock, C. Michotte, P. Leleux, R. Coszach, P. Van Duppen, Th. Delbar, Jean Vervier, P. Lipnik, Thomas Davinson
Publikováno v:
Physical Review C. 57:2711-2723
The population of the Na-20 resonances at 448, 661, 797, and 887 keV above the proton threshold has been studied in measurements of the Ne-19(p,gamma)Na-20 reaction with radioactive Ne-19 beams. The data have been analyzed fully in terms of resonance
Autor:
B. A. Brown, H. Herndl
Publikováno v:
Nuclear Physics A. 627:35-52
Extensive shell-model calculations in the mass range A = 86–100 on the neutron-deficient side of the nuclear chart are performed. The complete spectra of all isotopes are computed and compared to experimental excitation energies where available. Be
Autor:
G. P. A. Berg, E. J. Stephenson, T. Black, A.D. Bacher, Edward Stech, Joachim Görres, K. Jiang, H. Herndl, Seonho Choi, N. Kaloskamis, P. Tischhauser, C. C. Foster, Hendrik Schatz, Michael Wiescher
Publikováno v:
Physical Review Letters. 79:3845-3848
The ${}^{28}\mathrm{Si}(\ensuremath{\alpha}{,}^{8}\mathrm{He}{)}^{24}\mathrm{Si}$ reaction has been used to measure the energies of the first two excited states in ${}^{24}$Si. The excitation energies were found to be $1.879\ifmmode\pm\else\textpm\fi
Publikováno v:
Zeitschrift für Physik A: Hadrons and Nuclei. 355:101-105
Recent investigations suggest that the neutrino--heated hot bubble between the nascent neutron star and the overlying stellar mantle of a type--II supernova may be the site of the r--process. In the preceding $\alpha$--process building up the element
Publikováno v:
Scopus-Elsevier
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Neutron--induced nucleosynthesis plays an important role in astrophysical scenarios like in primordial nucleosynthesis in the early universe, in the s--process occurring in Red Giants, and in the $\alpha$--rich freeze--out and r--process taking place
Autor:
C. Coceva, H. Beer, R. Hofinger, Yu. P. Popov, Peter Mohr, P. V. Sedyshev, Heinz Oberhummer, H. Herndl
Publikováno v:
Physical Review C. 54:2014-2022
At the Karlsruhe pulsed 3.75 MV Van de Graaff accelerator the thermonuclear $^{48}\mathrm{Ca}$(n,\ensuremath{\gamma}${)}^{49}$Ca(8.72 min) cross section was measured by the fast cyclic activation technique via the 3084.4 keV \ensuremath{\gamma}-ray l
Publikováno v:
Physical Review C. 53:977-981
The neutron capture rate on $^{15}\mathrm{N}$ may be of considerable importance for s-process nucleosynthesis in red giants as well as for the nucleosynthesis in inhomogeneous big bang scenarios. We measured the reaction cross section of $^{15}\mathr
Publikováno v:
Physical Review C. 53:475-496
Existing experimental proton stripping reaction data on {sup 25}Mg leading to threshold states in {sup 26}Al are reinvestigated and reanalyzed in a consistent and improved manner. We use unbound state form factors in the DWBA analysis of the measured
Autor:
H. Herndl, Hendrik Schatz, F. Käppeler, H. Beer, Joachim Görres, Michael Wiescher, J. Meissner
Publikováno v:
Physical Review C. 53:459-468
The neutron capture rate on $^{18}\mathrm{O}$ is of considerable interest in the interpretation of nucleosynthesis in inhomogeneous big bang scenarios and for stellar helium burning in massive red giant stars as well as AGB stars. We measured the rea