Mean-field calculation of compressed finite nuclei with {Delta} excitations

Journal Article · Mon Dec 01 04:00:00 EST 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.56.3063· OSTI ID:679093

Hasan, Mahmoud A ^[1]

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1. Applied Science University, Amman (Jordan)

The energies and matter densities of finite nuclei under radial compression are predicted by using a constrained Hartree-Fock method with the {Delta} degree of freedom included. The results are presented for {sup 90}Zr in a calculation within a model space of seven major oscillator shells. The main feature of this calculation is that the effective baryon-baryon interactions associated with the {Delta} are evaluated within a G-matrix approach based on a coupled-channel NN{circle_plus}N{Delta}{circle_plus}{pi}NN model that can describe the NN data up to 1 GeV. It is found that as the nucleus is compressed to about 2{endash}3 times of the ordinary nuclear density, the {Delta} component is sharply increased to about 10{percent} of all baryons in the system. This result is consistent with the values extracted from relativistic heavy-ion collisions. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Iowa State University
• DOE Contract Number: FG02-87ER40371; W-31109-ENG-38
• OSTI ID: 679093
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 56; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BARYON-BARYON INTERACTIONS
COUPLED CHANNEL THEORY
DELTA BARYONS
ENERGY DENSITY
G MATRIX
HARTREE-FOCK METHOD
HEAVY ION REACTIONS
MEAN-FIELD THEORY
OSCILLATORS
SHELL MODELS
ZIRCONIUM 90