Abstract
The angular distributions of α + 12C elastic and inelastic (to the 4.44 MeV, 2+; 7.65MeV, 0+; and 9.64MeV, 3− states) scattering at 110 MeV are characterized by pronounced enhancement and strong oscillations at large angles. We performed calculations of the differential cross sections of these reactions assuming a potential scattering in the forward hemisphere and the direct transfer of 8Be cluster θ c.m. > 90°. We showed that the α + 8Be cluster configuration with relative angular momentum L = 0 dominates in the Hoyle state being 4.4 times larger than that in the ground state. This result also contributes to the verification of αBEC hypothesis and is consistent with the conjecture of a dilute 3α structure of the Hoyle state. In the 9.64 MeV, 3− state, a positive interference of all allowed α + 8Be configurations with a dominance of the p-orbital (49%) α-8Be relative motion is found. This finding manifests the exotic 3α, but hardly condensed structure of the 9.64-MeV 3− state in 12C.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
W. von Oertzen and H. G. Bohlen, Phys. Rep. 19, C1 (1975).
T. L. Belyaeva, N. S. Zelenskaya, and I. B. Teplov, Sov. J. Nucl. Phys. 35, 815 (1982); Sov. J.Nucl. Phys. 38, 540 (1983).
A. S. Demyanova et al., Nucl. Phys. A 542, 208 (1992).
A. S. Demyanova et al., in Proceedings of the 23rd International Nuclear Physics Conference, Tokyo, 3–8 June 2007, Ed. by S. Nagamiya et al. (Physical Society of Japan, Tokyo, 2008), Vol. 2, p. 489; Phys. At. Nucl. 72, 1611 (2009).
A. Tohsaki, H. Horiuchi, P. Schuck, and G. Ropke, Phys. Rev. Lett. 87, 192501 (2001); P. Schuck, Y. Funaki, H. Horiuchi, et al., Nucl. Phys. A 738, 94 (2004); Y. Funaki, H. Horiuchi, G. Ropke, et al., Phys. Rev. C 77, 064312 (2008).
A. A. Ogloblin, S. A. Goncharov, T. L. Belyaeva, and A. S. Demyanova, Phys. At. Nucl. 69, 1149 (2006).
Y. Kanada-En’yo, Phys. Rev. C 75, 024302 (2007).
M. Chernykh, H. Feldmeier, T. Neff, et al., Phys. Rev. Lett. 98, 032501 (2007).
G. R. Satchler, Introduction to Nuclear Reactions (Macmillan, New York, 1990).
I. J. Thompson, Comput. Phys. Rept. 7, 167 (1988).
S. A. Goncharov and A. Izadpanah, Phys. At. Nucl. 70, 18, 1491 (2007).
A. A. Ogloblin, A. S. Demyanova, and S. A. Goncharov, in Proceedings of the 23rd International Nuclear Physics Conference, Tokyo, 3–8 June 2007, Ed. by S. Nagamiya et al. (Physical Society of Japan, Tokyo, 2008), Vol. 2, p. 495.
Y. Fukushima and M. Kamimura, in Proceedings of the International Conference on Nuclear Structure, Tokyo, Sept. 5–10, 1977, Ed. by T. Marumori (Physical Society of Japan, Tokyo, 1978); M. Kamimura, Nucl. Phys. A 351, 456 (1981).
S. Raman, C. W. Nestor, Jr., and P. Tikkanen, At. Data Nucl. Data Tables 78, 1 (2001).
C. Kurokawa and K. Kato, Nucl. Phys. A 792, 87 (2007).
T. Yamada and P. Schuck, Phys. Rev. C 69, 024309 (2004); Eur. Phys. J. A 26, 185 (2005).
A. N. Danilov, T. L. Belyaeva, A. S. Demyanova, et al., Phys. Rev. C 80, 054603 (2009).
E. Uegaki, S. Okabe, Y. Abe, and H. Tanaka, Prog. Theor. Phys. 57, 1262 (1977); E. Uegaki, Y. Abe, S. Okabe, and H. Tanaka, Prog. Theor. Phys. 59, 1031 (1978); Prog. Theor. Phys. 62, 1621 (1979).
A. S. Demyanova, A. A. Ogloblin, S. A. Goncharov, and T. L. Belyaeva, Int. J. Mod. Phys. E 17, 2118 (2008).
Author information
Authors and Affiliations
Corresponding author
Additional information
The text was submitted by the authors in English.
Rights and permissions
About this article
Cite this article
Belyaeva, T.L., Danilov, A.N., Demyanova, A.S. et al. Role of 8Be heavy stripping mechanism in the α + 12C inelastic scattering to the near-3α-threshold states in 12C. Phys. Atom. Nuclei 74, 1537–1542 (2011). https://doi.org/10.1134/S1063778811110032
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063778811110032