References - Bogoliubov Laboratory of Theoretical Physics - JINR

Typical momentum spectrum for the 12 C( −→ d,p) 13 C ∗ reaction is shown in figure 1.
Peaks corresponding to the 13 C states are labeled by their excitation energies in MeV.
Results and discussion
The results on the tensor analyzing power T20 for the 12 C( −→ d,p) 13 C ∗ reaction are
presented in figure 2. The circles, squares and triangles represent the data on T20 for
12 C( −→ d,p) 13 C(g.s.), 12 C( −→ d,p) 13 C(3.089MeV )and 12 C( −→ d,p) 13 C(3.6845 + 3.854MeV)reactions,
respectively. The data on T20 for this reaction at the energy Td = 270 MeV
agree each other. The difference in the analyzing power for the 12 C( −→ d,p) 13 C(g.s.) and
for the reaction with the excitation of 13 C levels at the energies Td = 140 and 200 MeV
is observed.
Figure 2: The experimental results on T20 in 12 C( −→ d,p) 13 C ∗ reactions at the energy Td = 140, 200 and
270 MeV and emission angle Θcm=0 ◦ .
The experimental results on the vector Ay and tensor Ayy, Axx and Axz analyzing
powers of the 12 C( −→ d,p) 13 C ∗ and 12 C( −→ d,p) 13 C(g.s.) reactions at Td = 270 MeV are
presented by the circles and triangles respectively in figure 3. The sign of Ay data for
12 C( −→ d,p) 13 C(g.s.) andfor 12 C( −→ d,p) 13 C ∗ reactions is different. Values of the tensor Ayy
and Axz analyzing powers for these reactions are positive and in accordance within experimental
accuracy. The sign of Axx data is negative.
Summary
The results on the tensor analyzing power T20 for the 12 C( −→ d,p) 13 C ∗ reaction at the
energies Td = 140, 200 and 270 MeV and emission angle Θcm=0 ◦ have been obtained.
The tensor analyzing power for 12 C( −→ d,p) 13 C ∗ reactions is decreasing with increasing
of the kinetic energy of an incident deuteron.
The data on T20 for 12 C( −→ d,p) 13 C(3.089MeV)and 12 C( −→ d,p) 13 C(3.6845+3.854MeV)
reactions agree each other.
The experimental results on the vector Ay and tensor Ayy, Axx, Axz analyzing powers
of the 12 C( −→ d,p) 13 C ∗ reaction at the energy Td = 270 MeV in the angular range from 4 ◦
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