study of nuclear structure of even-even Dy isotopes

Ali, Aziz Mohammad; Qasim, Yaser; Yousuf, Mutasim Mahmood

doi:10.33899/edusj.2021.129809.1151

	study of nuclear structure of even-even Dy isotopes
Journal of Education and Science
Article 8, Volume 30, Issue 4, 2021, Pages 94-105 PDF (525.17 K)
Document Type: Research Paper
DOI: 10.33899/edusj.2021.129809.1151
Authors
Aziz Mohammad Ali¹; Yaser Qasim^* ²; Mutasim Mahmood Yousuf³
¹Department of Educational and Psychological Sciences, College of Education for Human Sciences, University of Mosul, Mosul, Iraq
²physics,education for pure science,Mosul,Iraq
³Department of Physics, College of Education for Pure Sciences, University of Mosul, Mosul
Abstract
(〖E(8〗_1^+))/(〖E(2〗_1^+)),(〖E(6〗_1^+))/(〖E(2〗_1^+)) , ( 〖E(4〗_1^+))/(〖E(2〗_1^+)) and the ratios of In this study, the energy of the first exited 21+ for 152-156DY even-even isotopes are compared with the standard values for the three limits, the vibration U(5), gamma-soft O(6) and the rotational SU(3). The back-bending curve and the relation between E/ I as a function of I ( E-GOS), the ratio 〖E(J〗_1^+)/〖E(2〗_1^+) and the ratio r (I+2/I) as a function of spin (I) are drawn for these isotopes to have more information about their properties. Calculation of the energy of different states along the yrast region has been done using the standard relations for each limit, U(5), O(6) and SU(3) and a comparison with the experimental data show that they the isotopes 152-154DY possess vibration U(5) properties and isotope 156DY possess gamma-soft O(6) properties. The interacting boson model IBM-1,BM and IVBM has been used to calculate the energy of different states along the yrast region applying a suitable limit for each isotopes. A program with MATLAB 10 has been built for this purpose. Agood agreement with the experimental data was obtained
Keywords
Dy isotopes,,; ,،,؛back-bending,,; ,،,؛IBM-1

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