NDLI: Dirac coupled channel analyses of the 2$^{−}$ gamma vibrational band excitation in $^{20}$Ne

Content Provider	Springer Nature Link
Author	Shim, Sugie
Copyright Year	2014
Abstract	Dirac coupled channel analyses are performed using the optical potential model for the highlying excited states that belong to the 2$^{−}$ gamma vibrational band for 800 MeV unpolarized proton inelastic scatterings from $^{20}$Ne. First-order vibrational collective models are used to obtain the transition optical potentials to describe the high-lying excited vibrational collective states, and Lorentz-covariant scalar and time-like vector potentials are used as direct optical potentials. The complicated Dirac coupled channel equations are solved phenomenologically to reproduce the differential cross section data by varying the optical potential and the deformation parameters and by using the minimum chi-square method. Relativistic Dirac coupled channel calculation is able to describe the excited states of the 2$^{−}$ gamma vibrational band in $^{20}$Ne much better than the nonrelativistic coupled channel calculation, especially for the 2$^{−}$ and the 3$^{−}$ states of the band. The multistep excitation process via channel coupling with the 3$^{−}$ state is shown to be essential in describing the excitation of the 2$^{−}$ state, and the pure direct transition from the ground state is dominant for the excitation of the 3$^{−}$ state at the 2$^{−}$ gamma vibrational band in $^{20}$Ne.
Starting Page	1179
Ending Page	1184
Page Count	6
File Format	PDF
ISSN	03744884
Journal	Journal of the Korean Physical Society
Volume Number	65
Issue Number	7
e-ISSN	19768524
Language	English
Publisher	The Korean Physical Society
Publisher Date	2014-10-23
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Collective model Optical potential model Theoretical, Mathematical and Computational Physics Proton inelastic scattering Dirac coupled channel analysis Physics Particle and Nuclear Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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