Abstract
The results are presented that were obtained by measuring the differential cross sections for the reaction 10B(d, p)11B occurring at E d = 15.3 MeV and leading to the production of a 11B nucleus in the ground state (3/2−) and in the lowest two excited states (the 1/2− state at 2.125 MeV and the 5/2− state at 4.445 MeV). The energy dependence of the differential cross section for this reaction was measured for several proton emission angles in the energy range E d = 12–15.3 MeV. The double-differential cross sections for the reaction 10B(d, pγ)11B were measured for the 5/2− state of the 11B nucleus at 4.445 MeV, and the angular dependences of the even spin-tensor components of the density matrix were reconstructed on the basis of these data. The angular dependences of the populations of magnetic sublevels are also given. The experimental results in question are compared with their theoretical counterparts obtained under the assumption of various reaction mechanisms (neutron stripping, heavy-particle stripping, and a two-step mechanism that takes into account the delay of interaction). On the basis of this comparison, the deformation parameters of the boron nuclei were found to be β 2(10B) = −0.55 and β 2(11B) = 0.4.
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References
N. S. Zelenskaya et al., Yad. Fiz. 64, 1995 (2001) [Phys. At. Nucl. 64, 1909 (2001)].
V. M. Lebedev, N. V. Orlova, and A. V. Spassky, Yad. Fiz. 61, 1604 (1998) [Phys. At. Nucl. 61, 1493 (1998)].
N. S. Zelenskaya et al., Yad. Fiz. 13, 734 (1971) [Sov. J. Nucl. Phys. 13, 417 (1971)].
M. S. Al’vesh et al., Yad. Fiz. 27, 1431 (1978) [Sov. J. Nucl. Phys. 27, 755 (1978)].
L. I. Galanina et al., Vestn. Mosk. Univ., Ser. 3: Fiz., Astron., No. 4, 24 (2004).
W. R. Smith and E. V. Ivash, Phys. Rev. 131, 304 (1963).
B. Zeidman, J. L. Yntema, and G. R. Satchler, in Proceedings of the Rutherford Jubilee International Conference, Manchester, 1961 (Heywood and Co., London, 1961), p. 515.
H. W. Barz et al., Nucl. Phys. 73, 473 (1965).
J. P. Schiffer et al., Phys. Rev. 164, 1274 (1967).
N. T. S. Evans and W. C. Parkinson, Proc. Phys. Soc. London, Sect. A 67, 684 (1954).
O. M. Bilaniuk and J. C. Hensel, Phys. Rev. 120, 211 (1960).
I. B. Teplov et al., Prib.Tekh. Éksp., No. 6, 45 (1965).
A. V. Ignatenko et al., Yad. Fiz. 55, 597 (1992) [Sov. J. Nucl. Phys. 55, 330 (1992)].
N. S. Zelenskaya, V. M. Lebedev, and A. V. Spasskii, Naukoemkie Tekhnologii 4, 19 (2003).
A. V. Ignatenko et al., in Proceedings of the 49th Conference on Nuclear Spectroscopy and Nuclear Structure, Dubna, 1999 (Petersburg Nucl. Phys. Inst., Russ. Acad. Sci., St. Petersburg, 1999), p. 156.
F. Ajzenberg-Selove, Nucl. Phys. A 433, 1 (1985).
R. A. I. Bell, R. D. Gill, B. C. Robertson, et al., Nucl. Phys. A 118, 481 (1968).
H. J. Rose and D. M. Brink, Rev. Mod. Phys. 39, 306 (1967).
Yu. P. Pyt’ev and I. A. Shishmarev, Course of Probability Theory and Mathematical Statistics for Physicists (Mosk. Gos. Univ., Moscow, 1983), p. 256.
N. S. Zelenskaya and I. B. Teplov, Properties of Excited Nuclear States and Angular Correlations in Nuclear Reactions (Énergoatomizdat, Moscow, 1995) [in Russian].
A. V. Ignatenko et al., Izv. Akad. Nauk, Ser. Fiz. 58, 188 (1994).
N. S. Zelenskaya and I. B. Teplov, Fiz. Élem. Chastits At. Yadra 18, 1283 (1987) [Sov. J. Part. Nucl. 18, 546 (1987)].
O. Yu. Balashova, N. S. Zelenskaya, and A. A. Ovchinnikova, Brief Description of Software Means for the Computers of the Institute of Nuclear Physics at Moscow State University (Mosk. Gos. Univ., Moscow, 1988), p. 97 [in Russian].
A. N. Boyarkina, Structure of 1p-Shell Nuclei (Mosk. Gos. Univ., Moscow, 1973) [in Russian].
V. M. Lebedev, N. V. Orlova, and A. V. Spasskii, Izv. Akad. Nauk, Ser. Fiz. 65, 724 (2001).
F. Ajzenberg-Selove, Nucl. Phys. A 490, 1 (1988).
M. N. Haraken et al., Nucl. Phys. A 344, 15 (1980).
E. Fabrici et al., Phys. Rev. C 21, 844 (1980).
P. D. Kunz and J. Cejpek, The Niels Bohr Institute, Comp. Prog. Library, Computer Code CHUCK (1977) (modified by R.N. Boyd, H. Clement, and E. Sugarbarker for the calculation of angular correlations).
L. I. Galanina and N. S. Zelenskaya, Izv. Akad. Nauk, Ser. Fiz. 63, 47 (1999).
D. Kurath, Nucl. Phys. A 317, 175 (1979).
J. F. Cavaignac, S. Jang, and D. H. Worledge, Nucl. Phys. A 243, 349 (1975).
T. L. Belyaeva et al., Comput. Phys. Commun. 73, 161 (1992).
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Translated from Yadernaya Fizika, Vol. 68, No. 12, 2005, pp. 2019–2029.
Original Russian Text Copyright © 2005 by Galanina, Zelenskaya, Ignatenko, Lebedev, Orlova, Serikov, Spassky.
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Galanina, L.I., Zelenskaya, N.S., Ignatenko, A.V. et al. Investigation of the mechanism of the reaction 10B(d, pγ)11B at E d = 15.3 MeV by the method of angular pγ correlations. Phys. Atom. Nuclei 68, 1957–1967 (2005). https://doi.org/10.1134/1.2149076
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DOI: https://doi.org/10.1134/1.2149076