WHY ARE SOME NUCLEI SPHERICAL?

1993 ◽  
Vol 02 (supp01) ◽  
pp. 71-79 ◽  
Author(s):  
KRISHNA KUMAR
Keyword(s):  
Potential Energy ◽  
Spherical Shell ◽  
Shell Model ◽  
Energy Minimization ◽  
Zero Point ◽  
Natural State ◽  
Atomic Nuclei ◽  
Point Motion ◽  
Spherical Nuclei ◽  
General Conditions

Energy minimization is not sufficient to determine whether a nucleus is spherical or deformed. The quantal zero-point motion can make a nucleus spherical even if the potential energy has a deformed minimum. However, some general conditions give deformed shape as the natural state of atomic nuclei. They are spherical only under some special conditions. Some general criteria for distinguishing spherical nuclei from deformed, as well as some advantages of using a deformed-shell model rather than a spherical-shell model, are presented.

THE PARTICLE CONSERVING SHELL CORRECTION METHOD AND THE NUCLEAR ZERO-POINT MOTION

2005 ◽  
Vol 14 (03) ◽  
pp. 499-503 ◽  
Author(s):  
HERVÉ MOLIQUE ◽  
JERZY DUDEK ◽  
KRZYSZTOF POMORSKI
Keyword(s):  
Zero Point ◽  
Correction Method ◽  
Shell Correction ◽  
Motion Mechanism ◽  
Point Motion ◽  
Spherical Nuclei

We estimate the influence of the zero-point motion mechanism on the shell-energies calculated within the method of Strutinsky — applied for the doubly-magic spherical nuclei.

Ionic displacement correlations from the zero-point motion of pressurized solid argon

2004 ◽  
Vol 69 (17) ◽  
Author(s):  
Hadley M. Lawler ◽  
Eric K. Chang ◽  
Eric L. Shirley
Keyword(s):  
Zero Point ◽  
Point Motion ◽  
Ionic Displacement ◽  
Solid Argon

Large Cryogenic Storage of Hydrogen in Carbon Nanotubes at Low Pressures

2001 ◽  
Vol 706 ◽  
Author(s):  
B. K. Pradhan ◽  
A. Harutyunyan ◽  
D. Stojkovic ◽  
P. Zhang ◽  
M. W. Cole ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Zero Point ◽  
Isosteric Heat ◽  
Low Pressure ◽  
Quantum Mechanical ◽  
Strong Adsorption ◽  
Point Motion ◽  
Post Synthesis ◽  
Walled Carbon Nanotubes ◽  
Low Pressures

AbstractWe report (6 wt %) storage of H2 at T=77 K in processed bundles of single-walled carbon nanotubes at P=2 atmospheres. The hydrogen storage isotherms are completely reversible. D2 isotherms confirm this anomalous low-pressure adsorption and further reveal the effects of quantum mechanical zero point motion. We propose that our post-synthesis treatment of the sample not only improves access for hydrogen to the central pores within individual nanotubes, but also may create a roughened tube surface with an enhanced binding energy for hydrogen. Such an enhancement is needed to understand the strong adsorption at low pressure. We obtain an experimental isosteric heat qst=125 ± 5 meV for processed SWNT materials.

Extension of the Shell Model for Heavy Spherical Nuclei

1960 ◽  
Vol 120 (3) ◽  
pp. 957-968 ◽  
Author(s):  
Michel Baranger
Keyword(s):  
Shell Model ◽  
Spherical Nuclei

Comment on "Weak Localization in Two and Three Dimensions: Dephasing by Zero-Point Motion"

1988 ◽  
Vol 60 (19) ◽  
pp. 1985-1985 ◽  
Author(s):  
Jørgen Rammer ◽  
Andrei L. Shelankov ◽  
Albert Schmid
Keyword(s):  
Weak Localization ◽  
Zero Point ◽  
Three Dimensions ◽  
Point Motion
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