Russian Federation
Russian Federation
Within the framework of the quantum fission theory on the base of the mechanism of the intermediate nucleus formation in the virtual state, research continues on the experimental characteristics of prescission light nuclei for cases of ternary spontaneous and induced fission (with the participation of thermal neutrons) of heavy nuclei 252Cf and 235U, 239Pu, respectively. On the basis of Gamow's alpha-decay theory, the probabilities of the formation of ω_(n_3 ) nuclei in the parent nuclei were calculated. It was found that for the cases of the appearance of third particles in two types of fission (spontaneous and induced), such characteristics as the values of the yields δ_(n_3 ), the maxima of the experimental energy distributions T_(n_3 max), as well as the probabilities of formation of ω_(n_3 )obtained in this work for prescission light nuclei, are close.
ternary nuclear fission, virtual mechanism, spontaneous and induced fission, prescission light nuclei, probability of formation in the parent nucleus
1. Gol'danskiy, V.I. Predely stabil'nosti i protonnaya i dvuhprotonnaya radioaktivnost' neytronodeficitnyh izotopov legkih yader / V.I. Gol'danskiy // Zhurnal eksperimental'noy i teoreticheskoy fiziki. – 1961. – T. 39, № 2. – S. 497.
2. Kadmenskiy, S.G. Teoriya mnogostupenchatyh statisticheskih raspadov v cepochkah geneticheski svyazannyh yader / S.G. Kadmenskiy, A.O. Bulychev // Izvestiya RAN. Seriya fizicheskaya. – 2016. – T. 80, № 8. – S. 1009-1014.
3. Kadmenskiy, S.G. Novyy klass yadernyh raspadov s uchastiem virtual'nyh sostoyaniy promezhutochnyh yader / S.G. Kadmenskiy, L.V. Titova, D.E. Lyubashevskiy // Yadernaya fizika. – 2020. – T. 83, № 4. – S. 326-335.
4. Kadmenskiy, S.G. Al'fa-raspad i rodstvennye yadernye reakcii / S.G. Kadmenskiy, V.I. Furman. – Moskva : Energoatomizdat, 1985. – 221 s.
5. Kadmenskiy, S.G. Obobschennyy podhod k opisaniyu mnogostupenchatyh raspadov v cepochkah geneticheski svyazannyh yader / S.G. Kadmenskiy, A.O. Bulychev // Izvestiya RAN. Seriya fizicheskaya. – 2015. – T. 79, № 7. – S. 967-974.
6. Kadmenskiy, S.G. Virtual'nyy harakter spontannogo i vynuzhdennogo (s uchastiem teplovyh neytronov) troynogo deleniya yader s ispuskaniem predrazryvnyh nuklonov i legkih yader / S.G. Kadmenskiy, Ya.O. Otvodenko // Yadernye i rodstvennye analiticheskie metody v ekologii i materialovedenii: materialy mezhdunarodnogo seminara po vzaimodeystviyu neytronov s yadrami - 29. – Dubna, 2023. – S. 247-262.
7. Titova, L.V. Virtual'nyy mehanizm troynogo deleniya yader / L.V. Titova // VMU. Seriya 3. Fizika. Astronomiya: zhurnal. – Moskva: MGU, 2021. – № 5. – S. 64-69.
8. Serot, O. Description of long-range alpha emission using the sudden approximation / O. Serot, N. Carjan, C. Wagemans // The European Physical Journal A. – 2000. – Vol. 8. – P. 187-196.
9. Emission of light nuclei in thermal neutron fission of 239Pu / T. Krogulski, J. Chwaszczewska, M. Dakowski, E. Piasecki, M. Sowiński // Nuclear Physics A. – 1969. – Vol. 128. – P. 219-223.
10. Energy spectra of long range particles from the thermal neutron fission of 235U / M. Dakowski, J. Chwaszczewska, T. Krogulski, E. Piasecki, M. Sowinski // Physics Letter B. – 1967. – Vol. 25, No. 3. – P. 213-214.
11. Li and Be nuclei emitted during the thermal neutron fission of 235U / J. Blocki, J. Chwaszczewska, M. Dakowski, T. Krogulski, E. Piasecki, M. Sowinski, A. Stegner, T. Tys // Nuclear Physics A. – 1969. – Vol. 127. – P. 495.
12. Cosper, S.W. Long-Range Particles of Z=1 to 4 Emitted During the Spontaneous Fission of 252Cf / S.W. Cosper, J. Cerny, R.C. Gatti // Physical Review. – 1967. – Vol. 154, No. 4. – P. 1193-1206.
13. 5He, 7He, and 8Li (E*=2.26 MeV) intermediate ternary particles in the spontaneous fission of 252Cf / Yu.N. Kopatch, M. Mutterer, D. Schwalm, P. Thirolf, F. Gonnenwein // Physical Review C. – 2002. – Vol. 65. – P. 044614-1 - 044614-16.