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Дата изменения: Wed Apr 14 16:06:56 1999
Дата индексирования: Tue Oct 2 12:05:47 2012
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Seminars

All-Moscow Seminar of Astrophysicists
(ASA)

The seminar is supported by the grant of Federal Programm "Integration"
annotation of talk
Panov Igor Vital'evich (ITEP) "R-process nucleosynthesis of heavy elements"


The present status of r-process theory is discussed: achgievements in kinetic consideration of the process and difficulties in understanding of r-process site. The important question about nature of r-process event - unique or multi - is discussed.

The original model, where r-process goes on driving by neutrino pulse from collapsing supernova with mass equal to 10-15 solar masses, is discussed.

The necessary for nucleosynthesis amount of free neutrons are emerge due to evaporation of neutrons from helium nuclei excited by neutrino-nuclear inelastic collisions. The influence of proton-nuclei and alpha-nuclei reactions on r-process is analized taking into account the shock-wave propagation.

Here we consider the possibility to obtain sufficient yields of r-elements in such model, at least in mass-range from A=80 till A=130.