Band Structure of nuclei in Deformed Hartree- Fock and Angular

88 Pages·2007·4.23 MB·English

Band Structure of nuclei in Deformed Hartree-
Fock and Angular Momentum Projection theory
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INT Workshop
1
Nov 2007
Outline of talk
Motivation

Formalism

 HF calculation
 Angular momentum projection
 Band mixing
Results and Discussion

 Configurations and band structure
Normal deformed bands
•
• Large K bands
• “Chiral” bands
• Superdeformed bands
 B(E2) & B(M1)
m

 Q , Q &
s t N
Conclusion

INT Workshop C. R. Praharaj, IOP,
2
Nov 2007 Bhubaneswar
Motivation
After coming of Heavy Ion accelerators

and new generation of detector arrays:
Extend upto very high spins

Many bands are known

Need theoretical frame work to correlate

and understand these starting from a
fundamental principle :-
Nucleon-nucleon interaction (Strong)

Shell model (both closed and away from

that)
INT Workshop C. R. Praharaj, IOP,
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Nov 2007 Bhubaneswar
Some interesting phenomena in nuclear

spectroscopy are
Regular and irregular spectra

Known upto very high spins

 Band crossings
 Inter-band transitions
 Signature effects
Large K bands. K selection violation

Identical bands

Staggering in B(E2) and B(M1)

INT Workshop C. R. Praharaj, IOP,
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Nov 2007 Bhubaneswar
Hartree-Fock (HF) method
INT Workshop C. R. Praharaj, IOP,
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Nov 2007 Bhubaneswar
C. R. Praharaj, IOP,
07/31/07 6
Bhubaneswar
INT Workshop C. R. Praharaj, IOP,
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Nov 2007 Bhubaneswar
INT Workshop C. R. Praharaj, IOP,
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Nov 2007 Bhubaneswar
C. R. Praharaj, IOP,
07/31/07 9
Bhubaneswar
RESIDUAL INTERACTIONS
C. R. Praharaj, IOP,
07/31/07 10
Bhubaneswar