Probing Different Characteristics of Shell Evolution Driven by Central, Spin-Orbit, and Tensor Forces

In this paper, the validity of the shell-evolution picture is investigated on the basis of shell-model calculations for the atomic mass number <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>25&l...

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Main Author: Yutaka Utsuno
Format: Article
Language:English
Published: MDPI AG 2022-02-01
Series:Physics
Subjects:
Online Access:https://www.mdpi.com/2624-8174/4/1/14
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author Yutaka Utsuno
author_facet Yutaka Utsuno
author_sort Yutaka Utsuno
collection DOAJ
description In this paper, the validity of the shell-evolution picture is investigated on the basis of shell-model calculations for the atomic mass number <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>25</mn><mo>≲</mo><mi>A</mi><mo>≲</mo><mn>55</mn></mrow></semantics></math></inline-formula> neutron-rich nuclei. For this purpose, the so-called SDPF-MU interaction is used. Its central, two-body spin–orbit, and tensor forces are taken from a simple Gaussian force, the M3Y (Michigan 3-range Yukawa) interaction, and a <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>π</mi><mo>+</mo><mi>ρ</mi></mrow></semantics></math></inline-formula> meson exchange force, respectively. Carrying out almost a complete survey of the predicted effective single-particle energies, it is confirmed here that the present scheme is quite effective for describing shell evolution in exotic nuclei.
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spelling doaj.art-507fb70bd14f43c6aac1377899cc5dd52023-11-30T21:59:53ZengMDPI AGPhysics2624-81742022-02-014118520110.3390/physics4010014Probing Different Characteristics of Shell Evolution Driven by Central, Spin-Orbit, and Tensor ForcesYutaka Utsuno0Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, JapanIn this paper, the validity of the shell-evolution picture is investigated on the basis of shell-model calculations for the atomic mass number <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>25</mn><mo>≲</mo><mi>A</mi><mo>≲</mo><mn>55</mn></mrow></semantics></math></inline-formula> neutron-rich nuclei. For this purpose, the so-called SDPF-MU interaction is used. Its central, two-body spin–orbit, and tensor forces are taken from a simple Gaussian force, the M3Y (Michigan 3-range Yukawa) interaction, and a <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>π</mi><mo>+</mo><mi>ρ</mi></mrow></semantics></math></inline-formula> meson exchange force, respectively. Carrying out almost a complete survey of the predicted effective single-particle energies, it is confirmed here that the present scheme is quite effective for describing shell evolution in exotic nuclei.https://www.mdpi.com/2624-8174/4/1/14shell evolutionexotic nucleishell modeleffective interactiontensor forcespectroscopic factor
spellingShingle Yutaka Utsuno
Probing Different Characteristics of Shell Evolution Driven by Central, Spin-Orbit, and Tensor Forces
Physics
shell evolution
exotic nuclei
shell model
effective interaction
tensor force
spectroscopic factor
title Probing Different Characteristics of Shell Evolution Driven by Central, Spin-Orbit, and Tensor Forces
title_full Probing Different Characteristics of Shell Evolution Driven by Central, Spin-Orbit, and Tensor Forces
title_fullStr Probing Different Characteristics of Shell Evolution Driven by Central, Spin-Orbit, and Tensor Forces
title_full_unstemmed Probing Different Characteristics of Shell Evolution Driven by Central, Spin-Orbit, and Tensor Forces
title_short Probing Different Characteristics of Shell Evolution Driven by Central, Spin-Orbit, and Tensor Forces
title_sort probing different characteristics of shell evolution driven by central spin orbit and tensor forces
topic shell evolution
exotic nuclei
shell model
effective interaction
tensor force
spectroscopic factor
url https://www.mdpi.com/2624-8174/4/1/14
work_keys_str_mv AT yutakautsuno probingdifferentcharacteristicsofshellevolutiondrivenbycentralspinorbitandtensorforces