ASYMMETRIC CLUSTERS IN 14Be

2011 ◽  
Vol 20 (04) ◽  
pp. 870-873
Author(s):  
MAKOTO ITO
Keyword(s):  
Excited States ◽  
Single Particle ◽  
Level Scheme ◽  
Cluster Model ◽  
Cluster Configuration

The generalized two-center cluster model (GTCM), which can treat various single particle configurations in general two-center systems, is applied to 14 Be =α+α+6N. We mainly investigate an appearance of asymmetric cluster structures, 6 He +8 He , in the excited states of 14 Be . The level scheme in 14 Be is discussed in a comparison with that in 10 Be . The relation between 14 Be and 10 Be can be understood from the viewpoint of the particle-hole symmetry in the x He +y He cluster configuration.

Level Scheme ofU235and the Distribution of Single-Particle Strength in Its Excited States

1972 ◽  
Vol 5 (6) ◽  
pp. 2072-2095 ◽  
Author(s):  
Frank A. Rickey ◽  
E. T. Jurney ◽  
H. C. Britt
Keyword(s):  
Excited States ◽  
Single Particle ◽  
Level Scheme ◽  
Particle Strength

scholarly journals Nuclear shape coexistence in 193Hg

2020 ◽  
Vol 6 ◽  
pp. 131
Author(s):  
N. Fotiades ◽  
Et al.
Keyword(s):  
Excited States ◽  
Single Particle ◽  
Level Scheme ◽  
Beam Energy ◽  
Nuclear Shape ◽  
Shape Coexistence ◽  
Intermediate Region ◽  
Lower Region ◽  
Rotational Bands

Excited states of the 193Hg nucleus have been investigated by the reaction 150Nd(48Ca,5n) at a beam energy of 213 MeV. The level scheme has been extended up to 10.7 MeV. Three different level pattern regions have been identified. A lower region with rotational bands, an intermediate region with single-particle character and an upper region with sequences of dipole transitions. The nature and the corresponding nuclear shape in these regions are discussed and compared with similar phenomena in the neighbouring nuclei.

scholarly journals Excited state Rényi entropy and subsystem distance in two-dimensional non-compact bosonic theory. Part I. Single-particle states

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Jiaju Zhang ◽  
M.A. Rajabpour
Keyword(s):  
Excited States ◽  
Single Particle ◽  
Renyi Entropy ◽  
Rényi Entropy ◽  
Large Momentum ◽  
Particle State ◽  
Two Dimensional ◽  
Universal Form ◽  
Conformal Field ◽  
Harmonic Chain

Abstract We investigate the Rényi entropy of the excited states produced by the current and its derivatives in the two-dimensional free massless non-compact bosonic theory, which is a two-dimensional conformal field theory. We also study the subsystem Schatten distance between these states. The two-dimensional free massless non-compact bosonic theory is the continuum limit of the finite periodic gapless harmonic chains with the local interactions. We identify the excited states produced by current and its derivatives in the massless bosonic theory as the single-particle excited states in the gapless harmonic chain. We calculate analytically the second Rényi entropy and the second Schatten distance in the massless bosonic theory. We then use the wave functions of the excited states and calculate the second Rényi entropy and the second Schatten distance in the gapless limit of the harmonic chain, which match perfectly with the analytical results in the massless bosonic theory. We verify that in the large momentum limit the single-particle state Rényi entropy takes a universal form. We also show that in the limit of large momenta and large momentum difference the subsystem Schatten distance takes a universal form but it is replaced by a new corrected form when the momentum difference is small. Finally we also comment on the mutual Rényi entropy of two disjoint intervals in the excited states of the two-dimensional free non-compact bosonic theory.

DEGENERATING CLUSTERS IN AN UNBOUND REGION OF 12Be

2009 ◽  
Vol 24 (11) ◽  
pp. 2175-2182 ◽  
Author(s):  
MAKOTO ITO
Keyword(s):  
Excitation Energy ◽  
Single Particle ◽  
Cluster Model ◽  
Particle Decay ◽  
Decay Threshold

The generalized two-center cluster model (GTCM), which can treat various single particle configurations in general two center systems, is applied to the light neutron-rich system, 12 Be = α+α+4N. We discuss the change of the neutrons' configuration around two α-cores as a variation of an excitation energy. We found that the covalent, ionic and atomic configurations appear with a prominent degenerating feature above the α+8 He g.s. particle-decay threshold.

scholarly journals Level studies of 73As via 73Ge(p, nγ)73As reaction and density of discrete levels in 73As

2009 ◽  
Vol 24 (2) ◽  
pp. 82-85 ◽  
Author(s):  
Aziz Behkami ◽  
Rohallah Razavi ◽  
Tayeb Kakavand
Keyword(s):  
Proton Beam ◽  
Excited States ◽  
Level Scheme ◽  
Level Density ◽  
Fermi Gas ◽  
Temperature Model ◽  
Nuclear Level Density ◽  
Nuclear Level ◽  
Level Densities ◽  
Experimental Level

The excited states of 73As have been investigated via the 73Ge(p, n?)73As reaction with the proton beam energies from 2.5-4.3 MeV. The parameters of the nuclear level density formula have been determined from the extensive and complete level scheme for 73As. The Bethe formula for the back-shifted Fermi gas model and the constant temperature model are compared with the experimental level densities.

EXCITED STATES OF 16O IN THE HARTREE–FOCK (H F) APPROXIMATION

1967 ◽  
Vol 45 (2) ◽  
pp. 333-337 ◽  
Author(s):  
R. Muthukrishnan
Keyword(s):  
Excited States ◽  
Single Particle ◽  
Hole State ◽  
Nucleon Interaction ◽  
Hartree Fock

The intrinsic 4-particle – 4-hole state of 16O is calculated in the Hartree–Fock approximation. The energy and single-particle levels are compared with previous calculations and some observations regarding the two-nucleon interaction are made.

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