Joachim Goerres
Research Professor, Department of Physics & Astronomy
- Office
- 110 Nieuwland Science Hall
Notre Dame, IN 46556 - Phone
- +1 574-631-7716
- jgoerres@nd.edu
Research Interests
The synthesis of elements and the generation of energy in stars is strongly influenced by the properties of nuclei (such as their mass and lifetime) and the speed with which reactions between nuclei take place. Prof. Görres’ research is geared toward the experimental determination of these parameters with special emphasis on hydrogen burning, which, for example, takes place in novae and supernovae, and on the nucleosynthesis in AGB stars. This experimental work is supplemented by the theoretical calculations of reaction rates that at present cannot be determined experimentally and by network calculations to identify nuclear reactions that have a strong influence on nucleosynthesis, e.g., waiting points and bottlenecks. The results of this work can be linked to measurements of elemental abundances in the ejecta of novae and to the observations of discrete gamma-lines from the decay of long-lived nuclei (e.g., 26Al and 44Ti) using the space-based Compton Gamma Ray Observatory.
Education
Vordiplom (B.S.) in Physics, Universität Münster, 1974
Diplom (M.S.) in Physics, Universität Münster, 1979
Ph.D. in Nuclear Physics, Universität Münster, 1983
Publications
“Bridging the Waiting Points – The Role of Two-Proton Capture Reactions in the rp-Process,” J. Görres, M. Wiescher, and F.-K. Thielemann, Phys. Rev. C 51, 392 (1995).
“First Measurement of Excited States in the Very Proton Rich Nucleus 24Si and the Consequences for 22Na Nucleosynthesis in Novae,” H. Schatz, J. Görres, H. Herndl, E. Stech, P. Tischhauser, M. Wiescher, A. Bacher, G. Berg, T. Black, S. Choi, C. Foster, X. Jiang, and E. Stephenson, Phys. Rev. Lett. 79, 3845 (1997).
“The 18F(p,a) Reaction and Its Astrophysical Implications,” J.S. Graulich, F. Binon, W. Bradfield-Smith, M. Cogneau, R. Coszach, T. Davinson, Th. Delbar, M. Gaelens, W. Galster, J. Görres, D. Labar, P. Leleux, M. Loiselet, J. McKenzie, R. Neal, G. Ryckewaert, A.C. Shotter, J. Vanhorenbeeck, J. Vervier, M. Wiescher, and Ph. Woods, Nuclear Physics A 626, 751 (1997).
“Lifetime of 44Ti as a Probe for Supernova Models,” J. Görres, J. Meissner, H. Schatz, E. Stech, P. Tischhauser, M. Wiescher, D. Bazin, R. Harkewicz, M. Hellström, B. Sherrill, M. Steiner, R.N. Boyd, L. Buchmann, D.H. Hartmann, and J.D. Hinnefeld, Phys. Rev. Lett. 80, 2554 (1998).
“Stellar He burning of 18O: A measurement of low-energy resonances and their astrophysical implications,” S. Dababneh, M. Heil, F. Käppeler, J. Görres, M. Wiescher, R. Reifarth, and H. Leiste, Phys. Rev. C 68 , 025801 (2003).