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Browsing by Author "Mezzacappa, A."
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Comparison of experimental and calculated S-factors of the p-process reaction Sm-144(alpha,gamma)Gd-148
Somorjai, E.; Fulop, Zs.; Kiss, A.Z.; Rolfs, C.E.; Trautvetter, H.P.; Greife, U.; Junker, M.; Goriely, S.; Arnould, M.; Rayet, M.; Rauscher, T.; Oberhummer, H. (IOP Publishing Ltd., 1998)The cross section of the Sm-144(alpha,gamma)Gd-148 reaction has been measured at bombarding energies in the 10.5 - 13.4 MeV range using an activation method based on the off-line alpha-activity measurement of the Gd-148 ... -
Element synthesis in stars
Thielemann, Friedrich-Karl; Brachwitz, F.; Freiburghaus, C.; Kolbe, E.; Martinez-Pinedo, Gabriel; Rauscher, T.; Rembges, F.; Hix, W. R.; Liebendoerfer, M.; Mezzacappa, A.; Kratz, K.L.; Pfeiffer, B.; Langanke, K.; Nomoto, K.; Rosswog, S.; Schatz, H.; Wiescher, Michael (Elsevier, 2001)Except for H-1, H-2, He-3, He-4, and Li-7, originating from the Big Bang, all heavier elements are made in stellar evolution and stellar explosions. Nuclear physics, and in many cases nuclear structure far from stability, ... -
Explosive H-burning, the rp-process, and X-ray bursts
Thielemann, Friedrich-Karl; Schatz, H.; Rauscher, T.; Rembges, J.F.; Gorres, J.; Wiescher, Michael; Bildsten, L. (IOP Publishing Ltd., 1998)The major astrophysical events which involve explosive H-burning are novae and type I X-ray bursts. Both are related to binary stellar systems with hydrogen accretion from a binary companion onto a compact object, and the ... -
Global statistical model calculations and the role of isospin
Rauscher, T.; Thielemann, Friedrich-Karl (IOP Publishing Ltd., 1998)An improved code for the calculation of astrophysical reaction rates in the statistical model is presented. It includes the possibility to study isospin effects. Such effects heavily affect rates involving self-conjugate ... -
Heavy elements and age determinations
Thielemann, Friedrich-Karl; Hauser, P.; Kolbe, E.; Martinez-Pinedo, Gabriel; Panov, I.; Rauscher, T.; Kratz, K.L.; Pfeiffer, B.; Rosswog, S.; Liebendoerfer, M.; Mezzacappa, A. (2002-01)The age of the universe, measured from the Big Bang to the present, is at the focus of cosmology. Its determination relies, however, on the use of stellar objects or their products. Stellar explosions, like type Ia supernovae ... -
Nuclear cross sections, nuclear structure and stellar nucleosynthesis
Thielemann, Friedrich-Karl; Argast, D.; Brachwitz, F.; Hix, W. R.; Hoflich, P.; Liebendoerfer, M.; Martinez-Pinedo, G.; Mezzacappa, A.; Panov, I.; Rauscher, T. (2003-05-05)The role of nuclear reactions (strong, weak and electromagnetic) and nuclear structure effects are discussed in a number of stellar applications. We address fusion cross sections in stellar evolution, neutrino-induced ... -
Nucleosynthesis and stellar evolution
Thielemann, Friedrich-Karl; Argast, D.; Brachwitz, F.; Martinez-Pinedo, G.; Rauscher, T.; Liebendoerfer, M.; Mezzacappa, A.; Hoflich, P.; Nomoto, K. (2002)Two of the basic building blocks of galaxies are stars and the interstellar medium. The evolution of the abundance composition in the latter and especially the enrichment of heavy elements as a function of space and time ... -
Nucleosynthesis in supernovae
Thielemann, Friedrich-Karl; Argast, D.; Brachwitz, F.; Martinez-Pinedo, Gabriel; Rauscher, T.; Liebendoerfer, M.; Mezzacappa, A.; Hoflich, P.; Iwamoto, K.; Nomoto, K. (Astronomical Society of the Pacific, 2002)The evolution of gas abundances in galaxies and the enrichment of heavy elements as a function of space and time reflects the history of star formation and the lifetimes of the diverse contributing stellar objects. Supernovae ...