Speaker
Description
Maulen Nassurlla1,2, N. Burtebayev1,2, L.I. Galanina3, S.B. Sakuta4, S.K. Sakhiyev1, Marzhan Nassurlla1, D.A. Issayev1,2, Duysebayev B.A.1, Khojayev, R.A.1, A.Sabidolda1, K.A. Talpakova1
1 Institute of Nuclear Physics, Ministry of Energy of Republic of Kazakhstan, Almaty 050032, Kazakhstan
2 Department of Physics and Technology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
3 НИИЯФ им. Д. В. Скобельцына, МГУ имени М. В. Ломоносова, Москва 119991, Россия
4 NRC “Kurchatov Institute”, Moscow 123182, Russia
The 9Be nucleus is one of the most famous exotic nuclei. Its properties - spectroscopy, electron scattering form factors, matrix elements of electromagnetic transitions and beta decays - have been well studied experimentally [1]. This makes it possible to test various models of the nucleus and neutron periphery on it in theoretical calculations. New experimental angular distributions of elastic scattering α-particles were measured on the extracted beams of the U-150M isochronous cyclotron of the Institute of Nuclear Physics of the Republic of Kazakhstan at an energy Eα= 45 MeV. The metal foils made of beryllium were used as a target, the thickness of which was determined by weighing, as well as by the energy loss of α-particles of the radioactive source 241Am-243Am-244Cm and 239Pu with an accuracy of 7%. Registration and identification of scattered α-particles was carried out using the standard ΔE-E technique, implemented on the basis of a PC/AT personal computer. After processing the energy spectra, differential cross sections for the scattering of α-particles in center-of-mass systems at an energy of 45 MeV were obtained for the following levels of the 9Be nucleus: the ground state (3/2-), as well as for the excited states 2.43 MeV (5/2-) and 6.38 MeV (7/2-) in the angle range up to 166o (for elastic scattering).
An analysis of elastic and inelastic scattering of α-particles was carried out within the framework of the optical model and the coupled channel method using the FRESCO program [2]. Good agreement between the calculated data and the experimental differential cross sections has been achieved.
Funding: This work was supported by the program #BR23891530 (Development of integrated scientific research in nuclear and radiation physics on the basis of Kazakhstan’s accelerator complexes) of the Ministry of Energy of the Republic of Kazakhstan.
References:
1. F. Ajenberg-Selove, Nuclear Physics A 490, 1-225 (1988)
2. I.J. Thompson FRESCO, Department of Physics, University of Surrey, July 2006, GuildfordGU27XH, England, version FRESCO 2.0, http://www.fresco.org.uk/
| Section | Nuclear physics (Section 1) |
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