The formation of isomeric pair in the natTi(3He,x)44m,gSc reactions: Effect of spin cut-off parameter on the isomeric ratio

Khandaker, Mayeen Uddin and Chakraborty, Animesh Kumer and Nagatsu, Kotaro and Obata, Honoka and Minegishi, Katsuyuki and Zhang, Ming-Rong and Okhunov, Abdurahim (2021) The formation of isomeric pair in the natTi(3He,x)44m,gSc reactions: Effect of spin cut-off parameter on the isomeric ratio. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 499. pp. 1-6. ISSN 0168-583X E-ISSN 1872-9584

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Abstract

Excitation functions for the natTi(3He, x)44g,mSc nuclear reactions were measured from respective threshold up to 55 MeV by using a conventional stacked-foil activation technique combined with HPGe γ-ray spectroscopy. Individual cross-section values for the production of 44mSc and 44gSc were separated using a proper mathematical method on the basis of their individual gamma lines and the data for 44gSc are reported here for the first time. The default parameters of TALYS-1.8 are unable to provide the 44mSc/44gSc isomeric cross-section ratio values consistent with those obtained experimentally. However, an adjustment of the level density model and optical model potentials together with some other relevant parameters, especially the spin cut-off parameter with the variation of η (=Ieff/Irigid) were found to be effective to reproduce the measured cross-sections. A similar parameter adjustment could be useful for accurate prediction of other medium mass isomeric pairs (i.e., when the metastable state is longer-lived than the ground state) where either experimental data are not available, or an expensive experiment is required to obtain them.

Item Type:	Article (Journal)
Additional Information:	6825/90861
Uncontrolled Keywords:	Natural titanium3He-particle activationStacked-foil technique44m,gSc isomeric pairModel calculations
Subjects:	Q Science > Q Science (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Science
Depositing User:	Dr. Abdurahim Okhunov
Date Deposited:	15 Jul 2021 17:35
Last Modified:	15 Jul 2021 17:35
URI:	http://irep.iium.edu.my/id/eprint/90861

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