The p-process Workshop

Session

gamma-process I

10 Sept 2009, 14:00

Seminar room 1.18 (Max-Planck Institut fuer Extraterrestrische Physik (MPE))

5. Alpha-induced reaction cross section measurements on 151Eu

Gyorgy Gyurky (Institute of Nuclear Research (ATOMKI), H-4001 Debrecen, POB. 51, Hungary)

10/09/2009, 14:00

In order to extend the available experimental database of alpha-induced reactions relevant for the p-process towards the heavier mass region, the cross section of the 151Eu(alpha,gamma)155Tb and 151Eu(alpha,n)154Tb reactions has been measured using the activation technique. The cross sections have been detemined in the center-of-mass energy range of 11.2 – 17 MeV and 12.3 – 17 MeV for the...

8. Proton-induced reactions for the astrophysical p-process

Zsolt Fulop (ATOMKI, H-4001 Debrecen, POB.51. Hungary)

10/09/2009, 14:30

ATOMKI has a long range program, supported by the European Research Council, to study reactions relevant to p-process using low energy accelerators. In addition to the alpha-induced reactions, proton-induced cross section data can test the reliability of the model calculations in the proton rich region as well as provide experimental information directly relevant to the p-process. Recent...

9. The (n, gamma) Cross Sections Of Heavy p-Process Nuclei

Justyna Marganiec (GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany)

10/09/2009, 14:50

The neutron capture cross sections of proton-rich nuclei are important for the nucleosynthesis of the heavy elements in the p process. Aspects of (n,gamma) reactions in the p process refer to the competition with (gamma,n) reactions, which affects the photodisintegration flux towards lighter nuclei, and to the formation of the final p-process abundances during the freeze-out phase. However,...

10. Detection, halflife and production of p-process nuclide 146Sm: progress report

Michael Paul (Racah Institute of Physics, Hebrew University, Jerusalem, Israel)

10/09/2009, 15:10

The 146Sm nuclide (t1/2= 1.03x10^8 a) belongs to the small family of nuclides produced by the nucleosynthesis p-process . Its presence as live radionuclide in the Early-Solar System was established by the study of isotopic anomalies of its 142Nd alpha daughter in meteorites. Interestingly, a difference in 142Nd isotopic signatures has been also discovered between terrestrial and chondritic...