## Abstract

Within a full dynamical parameter study including freezeout effects, we have determined the astrophysical conditions for an r-process in the so-called "neutrino-wind" scenario of core-collapse type II supernovae (SNII). We have started our calculations after the total photo disintegration of the matter above the nascent neutron star at 9 (.) 101 Kelvin with protons and neutrons. We have used the charged-particle network of Thielemann and the r-process code of Freiburghaus, combined with the NON-SMOKER neutron-capture rates of Rauscher, nuclear masses from the ETFS1-Q mass model and recent experimental and theoretical gross beta-decay properties. Using the three parameters V-exp (expansion speed of the shock wave), S (entropy of the bubble) and the neutron-to-proton ratio Y-e, we show that the above quantities have to fulfill specific conditions in order to make a successful r-process. According to observations and hydrodynamical simulations, respectively, a realistic value for V-exp is 7500 km/s, and Y-e

Original language | English |
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Pages (from-to) | 631C-634C |

Number of pages | 4 |

Journal | Nuclear Physics A |

Volume | 758 |

DOIs | |

Publication status | Published - 25 Jul 2005 |

Event | 8th International Symposium on Nucle in the Cosmos (NIC8) - Vancouver, Canada Duration: 19 Jul 2004 → 23 Jul 2004 |