Kirkuk Journal of Science

Kirkuk Journal of Science

Characteristics of Energy States and their Calculation Using IBM-1 and IVBM of Isotones 180HF, 182W, 184Os, 186Pt

Document Type : Research Paper

Author
Mohammed Ali Ahmed Alnejm
General Directorate of Nineveh Education, Ministry of Education, Mosul, Iraq.
10.32894/kujss.2021.167894
Abstract
The positive ground-state band (GSB) of isotones for N = 108 has been calculated using the Interacting Bosons Model (IBM-1), and Interacting Vector Boson Model (IVBM), while the negative-parity band (NPB) of  , has been calculated using the (IVBM). since (IBM-1) have different calculation according to the characteristics of each nucleus, these characteristics were identified using different method, Plotting  the relation of the  moment of inertia ( )  against the rotational frequency of the emitted photons ( ) during nuclear transition between different energy states were determined, The calculation shows that    nucleus do not have any back-bending effect which indicates that its characteristics have not changed, While  have a back-bending which indicate  that a change in their characteristics. Also using the relation between different excited states energies to their preceding values, one can determine  the characteristic of each nucleus which shows a rotational characteristics for  nucleus, while  have transitional characteristics between the two vibrational and rotational challenges, To get to know the characteristics of the nucleus more accurately the relation of the gamma energy over spin ( ) as a function of the spin (I) E-GOS was drown, the calculation showed pure rotational characteristic for  nucleus, While the nuclei have gamma soft O(6) characteristic, When staggering phenomena  between (NPB) and (GSB) has been studied, The contour plot show that  nucleus did not reach zero value which refer to the constancy of their characteristics.
Keywords
Interacting Boson Model
Interacting Vector Boson Model
Back bending
Staggering The isotones
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Kirkuk Journal of Science
Volume 16, Issue 1
Winter 2021
Page 48-72

  • Receive Date 30 March 2021