Ядерна фізика та енергетика Nuclear Physics and Atomic Energy   ISSN: 1818-331X (Print), 2074-0565 (Online)   Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine   Languages: Ukrainian, English   Periodicity: 4 times per year   Open access peer reviewed journal

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V. M. Lebedev¹, V. G. Neudatchin¹, B. G. Struzhko<sup>2

1</sup>Nuclear Physics Research Institute, Moscow State University, Moscow, Russia
²Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine

Abstract: The experimental two-dimensional proton-proton coincidence spectra of the four-particle reaction d + d → p + p + n + n are simulated with regard to dominant quasi-binary processes, viz. a quasi-free scattering of protons and final-state interaction of nucleons. Differential cross-sections dσ(ϑ, E)/dΩ of a deuteron charge exchange ²H(d,²n)²p reaction (0.57 ± 0.03 mb/sr at θ_cm = 62.5°, 1.01 ± 0.05 mb /sr at θ_cm = 79.6°, E_cm = 11.6 MeV) and spin-isospin flip ²H(d,d*)d* one (1.1 ± 0.3 mb /sr at θ_cm = 90°, E_cm = 23.4 MeV) are defined. They are compared to the cross-sections calculated in the approach of generalized (supermultiplet) potential model where the problem of the interaction of clusters A and B can be reduced to a transformations set of one-channel scattering problems with potentials V^[f] , where [f] are the allowed Young schemes for the system A + B. This is important for channels with minimum total spin S, in which the nonunitary elastic scattering amplitude T_LS is the half-sum of two different amplitudes T_L^[f] , which are invariant to SU(4). Inelastic amplitudes of the deuteron spin-isospin flip or charge exchange reactions are the half-difference of T_L^[f] ones. The theoretical cross-sections of inelastic processes are obtained equal 0.48, 1.61 and 0.61 mb /sr respectively.

1. Warner R. E., Di Cenzo S. B., Ball G. G. et al. Nucl. Phys. A 243 (1975) 189. https://doi.org/10.1016/0375-9474(75)90243-2

2. Watson K. M. Phys. Rev. 88 (1952) 1163. https://doi.org/10.1103/PhysRev.88.1163

3. Мигдал А. Б. ЖЭТФ 28 (1955) 3.

4. Стружко Б. Г. Укр. фіз. журнал 45 (2000) 1154;

Изв. РАН 64 (2000) 466.

5. Zhang Ying-Ji, Yang Jin-qing, Zhang Jie, He Jian-hua. Phys. Rev. C 45 (1992) 528. https://doi.org/10.1103/PhysRevC.45.528

6. Neudachin V. G., Sakharuk A. A., Smirnov Yu. F. Fiz. Elem. Chastits At. Yadra 23 (1992) 479;

Neudachin V. G., Kukulin V. I., Pomerantcev V. N., Sakharuk A. A. Phys. Rev. C 45 (1992) 1512. https://doi.org/10.1103/PhysRevC.45.1512

7. Leeman B. Th., Pugh M. G., Chant N. S., Chang C. C. Phys. Rev. C 17 (1978) 410. https://doi.org/10.1103/PhysRevC.17.410

8. Warner R. E. Phys. Rev. C 24 (1981) 2759. https://doi.org/10.1103/PhysRevD.24.2759

9. Конфедератенко В. І., Стружко Б. Г., Гурач Г. та ін. Укр. фіз. журнал 42 (1997) 274.

10. Головач Л. А., Зеркин В. В., Стружко Б. Г. и др. Изв. АН СССР. Сер. физ. 51 (1987) 166.

11. Zhang Ying-Ji, He Jian-hua, Yang Jin-qing, and Zhang Jie. Phys. Rev. C 47 (1993) 468. https://doi.org/10.1103/PhysRevC.47.468

12. Kumpf H. Proceedings of the VII International Conference on Few Body Problems in Nuclear and Particle Physics, Dehli, 1976 (Amsterdam, 1976) p. 225.

13. Allas R. G., Beach L. A., Bondelid R. O. et al. Nucl. Phys. A 304 (1978) 461. https://doi.org/10.1016/0375-9474(78)90244-0

14. Durand D. L., Arvieux J., Fiore A. et al. Phys. Rev. C 6 (1972) 393. https://doi.org/10.1103/PhysRevC.6.393

15. Koori N., Ohsawa T., Seki S. et al. Phys. Rev. C 31 (1985) 246. https://doi.org/10.1103/PhysRevC.31.246

16. Конфедератенко В. І., Поворозник О. М., Стружко Б. Г. та ін. Укр. фіз. журнал 42 (1997) 1175.

17. Struzhko B. Journal of Physical Studies 3 (1999) 431. https://doi.org/10.30970/jps.03.431

18. Гольдбергер С., Ватсон К. Теория столкновений. Пер. с англ. (Москва: Мир, 1967) 823 с.

19. Kluge Wolfgang. Fortschritte der Physik 22 (1974) 691. https://doi.org/10.1002/prop.19740221202

20. Machleidt R. Advances in Nuclear Physics 19 (1989) 189. https://doi.org/10.1007/978-1-4613-9907-0_2

21. Tornow W., Carman T. S., Chen Q. et al. Nucl. Phys. A 631 (1998) 421. https://doi.org/10.1016/S0375-9474(98)00040-2

22. Alderliesten C., Djaloeis A., Bojowald J. et al. Phys. Rev. C 18 (1978) 2001. https://doi.org/10.1103/PhysRevC.18.2001

23. Стружко Б. Г. Укр. фіз. журнал 43 (1999) 305.

24. Лебедев В. М., Неудачин В. Г., Сахарук А. А. Ядерная физика 63 (2000) 248.