22-26 October 2018
Hotel Intourist Kolomenskoye 4*
Europe/Moscow timezone


22 Oct 2018, 15:40
2h 30m
Petrovskiy hall (Hotel Intourist Kolomenskoye 4*)

Petrovskiy hall

Hotel Intourist Kolomenskoye 4*

Kashirskoye shosse, 39B, Moscow, Russia, 115409
Poster Nuclear physics Poster session and coffee-buffet


Viktar Starastsin (National Research Center «Kurchatov Institute»)


The experiment was done to study $^{11}$B($^{3}$He,d)$^{12}$C reaction with energy E($^{3}$He) = 25 MeV.

The aim of the experiment is to determine the properties of $^{12}$C states at high excitation energies and in particular to verify which of the conflicting spin-parity assignments of the 13.35 MeV state (2¯ or 4¯) is consistent with the data and optical model predictions.

The contradicting reports attribute either 2¯ [1-4] or 4¯ [5,6] for 13.35 MeV state in $^{12}$C. Unambiguous determination of the spin parity of the 13.35 MeV state is necessary to define its possible contribution to the part of the spectrum that we have previously identified as a new level in $^{12}$C with excitation energy of 13.75 MeV [7]. Initially, we have estimated this contribution as equal to the measured state 11.83 MeV (J$^π$ =2¯). This estimation assumed spin parity J$^π$ =2¯ of the 13.35 MeV state. However, from our experiment was settled spin-parity of the 13.35 state is 4¯.


  1. F. Ajzenberg-Selove, Nucl. Phys. A 506 (1990) 1

  2. P.D. Miller et al., Nuclear Physics A l36 (1969) 229-240

  3. G.M. Reynolds et al., Phys. Rev. C 3, # 2 (1971)

  4. P.K. Bindal et al., Phys. Rev. C 9, #6 (1974)

  5. M. Freer et al.,Phys. Rev. Lett. 113, 012502 (2014)

  6. O.S. Kirsebom et al., Phys. Rev. C 81, 064313 (2010)

  7. A. A.Ogloblin et al., EPJ Web of Conf. 66, 02074 (2014).

Primary author

Viktar Starastsin (National Research Center «Kurchatov Institute»)


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