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Shell model study of neutron rich 18-28O isotopes using effective interactions
Other Title(s)
دراسة أنموذج القشرة لنظائر الأوكسجين18-28O الغنية بالنيوترونات باستخدام تفاعلات مؤثرة
Joint Authors
Bahr, Husam Ali
Hammudi, Adil Khalaf
Source
Issue
Vol. 57, Issue 4C (31 Dec. 2016), pp.2863-2879, 17 p.
Publisher
University of Baghdad College of Science
Publication Date
2016-12-31
Country of Publication
Iraq
No. of Pages
17
Main Subjects
Topics
Abstract EN
We employ a simple effective nucleon-nucleon interaction for sd-shell model calculations derived from the Reid soft-core potential folded with two-body correlation functions which take account of the strong short-range repulsion and large tensor component in the Reid force.
Shell model calculations for ground and low lying energy states of neutron rich oxygen isotopes 18-28O are performed using OXBASH code.
Generally, this interaction predicts correct ordering of levels, yields reasonable energies for ground states of considered isotopes and predicts very well the newly observed excitation energy of in 26O.
Besides, it produces reasonable energy spectra for 23-27O and compressed energy spectra for 18-22O isotopes.
This is mainly due entirely to defects in the diagonal matrix elements of employed interaction.
To improve the present calculations, we modify the interaction through replacing the 14 diagonal matrix elements of with those of the USD interaction.
Mostly, our modified interaction predicts well the ordering of levels, the ground state energies and low lying energy spectra for all selected oxygen isotopes.
The modified interaction confirms the location of the neutron drip line at and also identifies the presence of the shell gap at and which proves the doubly magic behavior of 22O and 24O.
The spins in 24O of several excitation energies around 7.5 MeV are predicted by our interactions.
The calculated results obtained with the modified interaction are very close to those obtained with the empirical interactions of USDB and WPN.
American Psychological Association (APA)
Hammudi, Adil Khalaf& Bahr, Husam Ali. 2016. Shell model study of neutron rich 18-28O isotopes using effective interactions. Iraqi Journal of Science،Vol. 57, no. 4C, pp.2863-2879.
https://search.emarefa.net/detail/BIM-733926
Modern Language Association (MLA)
Hammudi, Adil Khalaf& Bahr, Husam Ali. Shell model study of neutron rich 18-28O isotopes using effective interactions. Iraqi Journal of Science Vol. 57, no. 4C (2016), pp.2863-2879.
https://search.emarefa.net/detail/BIM-733926
American Medical Association (AMA)
Hammudi, Adil Khalaf& Bahr, Husam Ali. Shell model study of neutron rich 18-28O isotopes using effective interactions. Iraqi Journal of Science. 2016. Vol. 57, no. 4C, pp.2863-2879.
https://search.emarefa.net/detail/BIM-733926
Data Type
Journal Articles
Language
English
Notes
Text in English ; abstracts in English and Arabic.
Record ID
BIM-733926