ELFT HÍRADÓ

[somogyi <somogyi.gabor AT wigner.hu>]

Wigner FK RMI Elméleti Osztály Szemináriuma
Tisztelettel meghívjuk


                  Sergei P. Maydanyuk
                  (Wigner RCP)


"Synthesis of elements in compact stars in pycnonuclear reactions with 
Carbon isotopes"


     címmel tartandó szemináriumára.


Kivonat:



Purpose: Conditions of formation of compound nuclear system needed for 
synthesis of heavy nuclei in pycnonuclear reactions in compact stars are 
studied on quantum mechanical basis. Methods: Method of multiple 
internal reflections is generalized for pycnoreactions in compact stars 
with new calculations of quasibound spectra and spectra of zero-point 
vibrations. Results: Peculiarities of the method are analyzed for 
reactions with isotopes of Carbon. The developed method takes into 
account continuity and conservation of quantum flux (describing 
pycnonuclear reaction) inside the full spacial region of reaction 
including nuclear region. This gives appearance of new states (called as 
quasibound states), in which compound nuclear systems of Magnesium are 
formed with the largest probability. These states have not been studied 
yet by other researchers in study of synthesis of elements in stars. 
Energy spectra of zero-point vibrations and spectra of quasibound states 
are estimated with high precision for reactions with isotopes of Carbon. 
Conclusions: Probability of formation of compound nuclear system in 
quasibound states in pycnonuclear reaction is essentially larger than 
probability of formation of this system in states of zero-point 
vibrations studied by Zel'dovich and followers of that idea. Therefore, 
synthesis of more heavy nuclei of Magnesium from isotopes of Carbon is 
essentially more probable in quasibound states than in states of 
zero-point vibrations in compact stars.



Helye: Wigner FK RMI II. ép. Médiaterem (SZOKÁSOSTÓL ELTÉRŐ HELYSZÍN)
Ideje: 2023. május 26 péntek d.u. 14 óra

Az előadást a következő zoom linken is lehet majd követni:

Topic: Wigner RCP theory seminar by Sergei P. Maydanyuk: Synthesis of 
elements in compact stars in pycnonuclear reactions with Carbon isotopes
Time: May 26, 2023 02:00 PM Budapest

Join Zoom Meeting
https://wigner-hu.zoom.us/j/6857321936?pwd=UmVTNWt3WkxWeVhsUWl5QjJraHlwdz09

Meeting ID: 685 732 1936
Passcode: 828694



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                             Somogyi Gábor