Search

Thick Target Inverse Kinematics Method [1] was used to study the resonance scattering at the DC-60 heavy ion cyclotron [2] (2.0 MeV/A maximal energy) at Astana. We combined Time of Flight measurements with the conventional TTIK approach [3]. In this way, we obtained the excitation functions for the elastic scattering of 17O, 16O, 15N, 13C on He-4 and on hydrogen; helium and hydrogen gas being used as a target. Measurements of the particle energy loss were used to improve energy calibrations. A comparison of the experimental data with shell model predictions for cluster widths is given. [ABSTRACT FROM AUTHOR]

Experimental search for the low-lying 7H resonance was performed in the d(8He,3He)7H reaction with a 8He beam at 42A MeV. No well-pronounced peak of 7H was observed, but the spectrum has some peculiarities at ∼2 MeV and ∼10.5 MeV above the t+4 n threshold. The d(12Be,3He)11Li reaction simultaneously measured at 71A MeV showed the population of 11Li ground state with the c.m.s. cross section of ≈1 mb/sr. [ABSTRACT FROM AUTHOR]

The 4He(6He,2α)2n reaction was studied in experiments designed for the observation of a quasi-free scattering (QFS) occurring between the α core of the Borromean 6He nuclei and the 4He target nuclei. The helium gas target cooled down to 14 K was bombarded by a 25A MeV secondary beam of 6He nuclei produced at the fragment separator ACCULINNA (Dubna). The data were analyzed with the use of the Plane Wave Impulse Approximation (PWIA) and the three-body wave function of 6He and taking into account the n - n final state interaction. Correlation obtained in the reaction exit channel between the momentum values characteristic to the α-2n and n-n subsystems were found to be consistent with the PWIA predictions. This suggests that QFS could be suitable for the study of other Borromean nuclei. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]