ELFT HÍRADÓ

[Zoltan Mate <mate AT namafia.atomki.hu>]

Az MTA Atommagkutató Intézetének nagy előadójában
(Debrecen, Bem tér 18/c. 12. ép. III. em.)
2008. január 31-én, csütörtökön 11:00-kor

           N. Özkan  and  R.T. Güray
       (Kocaeli University, Kocaeli, Turkey)      

        Charged particle induced reactions
         and the astrophysical p-process

címmel előadást tartanak.
Az előadás előtt 10:30-tól tea.
Vendégeket szívesen látunk.


                              Máté Zoltán

Abstract:
The 35 stable nuclei, Z=34, located at neutron deficient side of valley of 
beta-stability are called as p-nuclei and are produced by so called 
p-process. P-process nucleosynthesis proceeds mainly via a series of 
photon induced reactions (g,n), (g,p), and/or (g,alpha ) in the high 
temperature astrophysical environments T9 = 2-3. Abundance calculations 
for the p-nuclei involve an extended network of about 20,000 nuclear 
reactions of almost 2000 nuclei. Since, so far most of these reactions are 
not accessible experimentally, these reaction rates mainly rely on the 
Hauser-Feshbach statistical model, using global optical potentials. Cross 
section measurements for proton and alpha induced reactions are crucial 
for the p-process nucleosynthesis and for testing this model. Elastic a 
scattering measurements provide an additional test for the alpha-nucleus 
potentials considered in p-process network calculations.
In this talk, the status of experimental cross section measurements of 
charged particle induced reactions will be described. The experimental 
database obtained by activation method up to now and what can be done in 
the future for the p-process will also be presented.