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[Fizinfo] Atomki-szeminárium


Chronological Thread 
  • From: Zoltan Mate <mate AT namafia.atomki.hu>
  • To: Fizinfo AT lists.kfki.hu
  • Subject: [Fizinfo] Atomki-szeminárium
  • Date: Fri, 25 Jan 2008 16:06:02 +0100 (CET)
  • List-archive: <http://mailman.kfki.hu/pipermail/fizinfo>
  • List-id: ELFT HÍRADÓ <fizinfo.lists.kfki.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.


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