Abstract
A study is performed of the mechanism responsible for the creation of prescission neutrons in spontaneous fission and fission induced by thermal neutrons, a process that has been investigated experimentally in a number of works for nuclei of the actinide group. It is shown that the spectra of prescission neutrons correspond to mean kinetic energies on the order of 0.5 MeV and angular distributions with a characteristic maximum near an angle of 90° between the direction of the emission of the indicated neutrons and that of a light fragment of fission. It is shown these characteristics of the neutron spectrum can be explained by considering the emission of prescission neutrons from the neck of a compound fissile nucleus, based on virtual ternary nuclear fission.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
Akhiezer, A.I. and Berestetskii, V.B., Kvantovaya elektrodinamika (Quantum Electrodynamics), Moscow: Fizmatgiz, 1981.
Kadmensky, S.G. and Ivankov, Yu.V., Phys. At. Nucl., 2014, vol. 77, no. 8, p. 119.
Kadmensky, S.G. and Ivankov, Yu.V., Phys. At. Nucl., 2014, vol. 77, no. 12, p. 1605.
Kadmensky, S.G., Ivankov, Yu.V., and Lyubashevsky, D.E., Phys. At. Nucl., 2017, vol. 80, no. 5, p. 903.
Kadmensky, S.G., Titova, L.V., and Lyubashevsky, D.E., Phys. At. Nucl., 2020, vol. 83, no. 4, p. 326.
Goldansky, V.I., Zh. Eksp. Teor. Fiz., 1960, vol. 39, p. 497.
Goldansky, V.I., Usp. Fiz. Nauk, 1965, vol. 87, p. 255.
Pfutzner, M., Badura, E., Bingham, C., et al., Eur. Rev. Lett., 2002, vol. 14, p. 279.
Giovanezzo, J., Blank, B., Chartier, M.S., et al., Phys. Rev. Lett., 2002, vol. 89.
Dossat, C., Bey, A., Blank, B., et al., Phys. Rev. C, 2005, vol. 72, 054315.
Lyubashevsky, D.E., Bull. Russ. Acad. Sci.: Phys., 2021, vol. 85, no. 10, p. 1201.
Sliv, L.A., Zh. Eksp. Teor. Fiz., 1950, vol. 20, p. 1035.
Suhonen, J. and Civitarese, O., Phys. Rep., 1998, vol. 300, p. 123.
Tretyak, V.I., Double Beta Decay: History and Current Status, Kyiv: Kyiv Inst. Nucl. Res., 2014.
Kadmensky, S.G. and Titova, L.V., Bull. Russ. Acad. Sci. Phys, 2021, vol. 85, no. 5, p. 569.
Kadmensky, S.G. and Bulychev, A.O., Phys. At. Nucl., 2016, vol. 79, no. 5, p. 793.
Kadmensky, S.G. and Bulychev, A.O., Bull. Russ. Acad. Sci.: Phys., 2016, vol. 80, p. 921.
Vermote, S., Wagemans, C., Serot, O., et al., Nucl. Phys. A, 2010, vol. 837, p. 176.
Mutterer, M. and Theobald, J.P., Dinuclear Decay Modes, Bristol: IOP, 1976, chapter 12.
Capote, R., Chen, Y.-J., Hambsch, F.-J., et al., Nucl. Data Sheeets, 2016, vol. 131, p. 1.
Vorobyev A.S., Shcherbakov O.A., Gagarsky A.M. et al., J. Exp. Theor. Phys., 2017, vol. 152, no. 4, p. 619.
Vorobyev A.S., Shcherbakov O.A., Gagarsky A.M. et al., J. Exp. Theor. Phys., 2018, vol. 154, p. 659.
Vorobyev A.S., Shcherbakov O.A., Gagarsky A.M. et al., Bull. Russ. Acad. Sci.: Phys., 2018, vol. 82, no. 10, p. 1245.
Vorobyev, A.S., Shcherbakov, O.A., Gagarsky, A.M., et al., EPJ Web Conf., 2020, vol. 239, 05008.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
The authors declare they have no conflicts of interest.
Additional information
Translated by I. Obrezanova
About this article
Cite this article
Kadmensky, S.G., Kufaev, S.V. & Otvodenko, Y.O. Possibility of Identifying Virtual Components for Prescission Neutrons. Bull. Russ. Acad. Sci. Phys. 86, 1102–1107 (2022). https://doi.org/10.3103/S1062873822090106
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S1062873822090106