Tübingen 2003 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 15: Poster-Sitzung: Kern- und Teilchen-Astrophysik
HK 15.11: Poster
Dienstag, 18. März 2003, 13:30–15:30, Foyer
Canonical r-process calculations based on the new HFB-2 model — •K. Farouqi1, K.-L. Kratz1, U. Heinzmann1, B. Pfeiffer1, K. Vaughan2, A. Aprahamian2, and F.-K. Thielemann3 — 1Inst. f. Kernchemie, Univ. Mainz — 2Dept. of Physics, Univ. Notre Dame, USA — 3Dept. f. Physik & Astronomie, Univ. Basel, Schweiz
We have applied the new self-consistent HFB-2 model [1] in our canonical [2] and dynamical network [3] r-process calculations. The neutron number densities for the “waiting-point” nuclides were determined from the nuclear Saha equation. With time-dependent calculations, we determined the duration of the process at the magic neutron numbers N=50, 82, 126. In addition to the canonical seed element Fe we investigated the influence of higher-Z seed elements.
[1] M. Samyn et al., Nucl. Phys. A700 (2001) 142
[2] K.-L. Kratz et al., Ap.J. 403 (1993) 216
[3] C. Freiburghaus et al., Ap.J. 516 (1999) 381