GROUND-STATE AND ALPHA-DECAY PROPERTIES OF EVEN Hs ISOTOPES

2008 ◽  
Vol 17 (supp01) ◽  
pp. 97-108
Author(s):  
L. MA ◽  
H. F. ZHANG ◽  
X. H. ZHOU ◽  
Z. G. GAN ◽  
J. Q. LI ◽  
...  
Keyword(s):  
Ground State ◽  
Alpha Decay ◽  
Particle Energy ◽  
Drip Line ◽  
Single Particle Energy ◽  
Pairing Interaction ◽  
Fermi Surfaces ◽  
Decay Properties ◽  
The Continuum ◽  
Isotope Chain

The ground state properties of Hs nuclei were studied to give an overview to the isotope chain. It is seen that more stable isotopes are located on the proton abundant side of the chain. The last stable nucleus to the proton drip line is 256 Hs . The most stable unknown Hs nucleus may be 268 Hs . The proton Fermi surfaces of Hs nuclei are close to zero, the conventional BCS treatment with constant pairing interaction can excite protons to the continuum, and causes the failure for pairing correction. The density dependent delta interaction results in more reasonable single-particle energy level distributions and nucleon occupation. Therefore it has improved the BCS treatment, and is available to describe the properties of nuclei in the superheavy region.

ENERGY LEVELS IN THE STATISTICAL ATOM WITH EXCHANGE AND CORRELATION

1967 ◽  
Vol 45 (5) ◽  
pp. 1745-1754 ◽  
Author(s):  
Ashok Jain ◽  
Satish Kumar
Keyword(s):  
Ground State ◽  
Energy Levels ◽  
Argon Atom ◽  
Particle Energy ◽  
Single Particle Energy ◽  
Relativistic Generalization ◽  
Quantum Numbers ◽  
Different Types ◽  
Present Formalism ◽  
Experimental Values

In this paper, quantum numbers are introduced in a statistical model of atoms that includes the correlation and the exchange terms (TFDC model). Two different types of angular momentum assignments have been introduced into the model and, as an application of this, the single-particle energy levels of the argon atom in its ground state have been calculated. A simple relativistic generalization of the present formalism is discussed and is shown to give better agreement with experimental values. Finally, some suggestions for improvement of the present formalism are made.

scholarly journals PROTON SINGLE PARTICLE ENERGY SHIFTS DUE TO COULOMB CORRELATIONS

2001 ◽  
Vol 15 (10n11) ◽  
pp. 1572-1574
Author(s):  
A. BULGAC ◽  
V. R. SHAGINYAN
Keyword(s):  
Strong Interaction ◽  
Single Particle ◽  
Mass Difference ◽  
Particle Energy ◽  
Drip Line ◽  
Coulomb Energy ◽  
Single Particle Energy ◽  
Proton Mass ◽  
Coulomb Correlations ◽  
Consistent Approach

A theoretically consistent approach to the calculation of the Coulomb energy of nuclei is presented. New contributions to the single-particle energies are taken into account. We show that the interplay between the Coulomb interaction and the strong interaction leads to an upward shift of the proton single-particle levels, affecting the position of the calculated proton drip line. The same contributions are responsible for significant corrections to the mass difference of the mirror nuclei (Nolen-Schiffer anomaly) and to the effective proton mass.

scholarly journals HARTREE–FOCK GROUND STATE OF THE COMPOSITE FERMION METAL

1995 ◽  
Vol 09 (14) ◽  
pp. 889-894
Author(s):  
PIOTR SITKO ◽  
LUCJAN JACAK
Keyword(s):  
Single Particle ◽  
Ground State ◽  
Particle Energy ◽  
Fermi Velocity ◽  
Exchange Term ◽  
Single Particle Energy ◽  
Composite Fermion ◽  
Hartree Fock ◽  
Logarithmic Interaction ◽  
Particle Exchange

Within the Hartree–Fock approximation the ground state of the composite fermion metal is found. We observe that the single-particle energy spectrum is dominated by the logarithmic interaction exchange term which leads to an infinite jump of the single-particle exchange at the Fermi momentum. It is shown that the Hartree–Fock result brings no corrections to the RPA Fermi velocity.

NEW ALPHA-DECAY BARRIER PENETRABILITIES WITH IGO POTENTIAL: EVEN-MASS NUCLEI

1966 ◽  
Vol 44 (7) ◽  
pp. 1479-1484 ◽  
Author(s):  
L. Kohlmann ◽  
T. Vörös
Keyword(s):  
Ground State ◽  
Alpha Decay ◽  
Particle Energy ◽  
Recoil Energy ◽  
State Transitions ◽  
Centrifugal Barrier ◽  
Barrier Effects ◽  
Energy Plus ◽  
Barrier Penetration ◽  
Alpha Particle Energy

The lgo potential is used for the calculation of barrier penetrabilities for ground-state and excited-state transitions of even–even nuclei and for transitions of odd–odd nuclei, measured after 1959. The barrier penetration factors were calculated by numerical integration in the WKB approximation, taking into consideration centrifugal barrier effects for even–even nuclei, but ignoring non-central interactions. Using the calculated penetration factors and the experimental alpha half-lives, the reduced level widths were calculated in each case. The barrier penetration factors and the reduced level widths are given for total decay energy (alpha-particle energy plus electron-screening correction plus recoil energy).

scholarly journals Description of nuclei with magic number Z (N) = 6

2018 ◽  
Vol 96 (12) ◽  
pp. 1413-1419
Author(s):  
M. Kumawat ◽  
G. Saxena ◽  
M. Kaushik ◽  
R. Sharma ◽  
S.K. Jain
Keyword(s):  
Ground State ◽  
Mean Field ◽  
Magic Number ◽  
Particle Energy ◽  
Energy Separation ◽  
Neutron Density ◽  
Single Particle Energy ◽  
Separation Energy ◽  
Relativistic Mean Field ◽  
Similar Kind

Encouraged by the evidence for Z = 6 magic number in neutron-rich carbon isotopes, we have performed relativistic mean-field plus BCS calculations to investigate ground state properties of entire chains of isotopes (isotones) with Z (N) = 6 including even and odd mass nuclei. Our calculations include deformation, binding energy, separation energy, single particle energy, root mean squared radii, along with charge and neutron density profile, etc., and are found to be an excellent match with latest experimental results demonstrating Z = 6 as a strong magic number. N = 6 is also found to have a similar kind of strong magic character.

On the single-particle-energy spectrum of a Λ particle in nuclear matter

1970 ◽  
Vol 48 (23) ◽  
pp. 2804-2808 ◽  
Author(s):  
K. F. Chong ◽  
Y. Nogami ◽  
E. Satoh
Keyword(s):  
Energy Spectrum ◽  
Nuclear Matter ◽  
Single Particle ◽  
Short Range ◽  
Particle Energy ◽  
Pair Approximation ◽  
Single Particle Energy ◽  
Short Range Repulsion ◽  
Separable Potentials ◽  
Independent Pair

The single-particle-energy spectrum of a Λ particle in nuclear matter is examined in the independent-pair approximation, by assuming nonlocal separable potentials for the ΛN interaction. Effects of short-range repulsion in the ΛN interaction on the Λ binding are also examined in terms of separable potentials of rank two.

Shell-Tunneling Spectroscopy of the Single-Particle Energy Levels of Insulating Quantum Dots

Nano Letters ◽  
2001 ◽  
Vol 1 (10) ◽  
pp. 551-556 ◽  
Author(s):  
E. P. A. M. Bakkers ◽  
Z. Hens ◽  
A. Zunger ◽  
A. Franceschetti ◽  
L. P. Kouwenhoven ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Single Particle ◽  
Energy Levels ◽  
Tunneling Spectroscopy ◽  
Particle Energy ◽  
Single Particle Energy

CHARGE DENSITY WAVE TRANSITIONS IN TWO-DIMENSIONAL TRANSITION METAL BRONZES AND OXIDES

1993 ◽  
Vol 07 (23n24) ◽  
pp. 3973-4003 ◽  
Author(s):  
P. FOURY ◽  
J.P. POUGET
Keyword(s):  
Transition Metal ◽  
Charge Density ◽  
Ground State ◽  
Charge Density Wave ◽  
Density Wave ◽  
Electron Localization ◽  
Two Dimensional ◽  
Fermi Surfaces ◽  
A Charge ◽  
Structural Instabilities

The structural instabilities towards the formation of a charge density wave (CDW) ground state exhibited by several layered Mo and W bronzes and oxides are reviewed. It is shown that in these two-dimensional (2D) metals, including the purple bronzes A x Mo 6 O 17 (A=K, Na, Tl; x≈1), the γ and η phases of MO 4 O 11 and the monophosphate tungsten bronzes with pentagonal tunnels ( PO 2)4 ( WO 3)2m(m=4, 6, 7), the CDW instability can be associated with particular chains of MoO 6 or WO 6 octahedra of the ReO 3 type slabs along which there is a strong overlap of the t 2g orbitals. The CDW critical wave vectors of the purple bronzes, Mo 4 O 11 and the tungsten bronzes with m=4 and 6 lead to a common nesting between differently oriented 1D Fermi surfaces. It is suggested that the anharmonic CDW modulation, which occurs in the tungsten bronzes with m≥7, could be the structural fingerprint of electron localization effects.

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