Influence of shell structure and pairing correlations on the nuclear state density

We demonstrate that pairing phase transition (superfluid to normal) can be described quite generally in terms of the thermodynamical properties after verifying the obtained level densities with the available experimental data for [Formula: see text]- isotopes. Periodic-orbit theory conveniently connects the oscillatory part of level density to the underlying classical periodic orbits and hence, leads to the shell effects in the single-particle level density. Such methods incorporated with pairing effects can be used effectively to study the phase transitions in [Formula: see text]-isotopes. In addition to this, an interplay between pairing correlations and the shell effects has been understood by analyzing the results obtained for the critical temperatures and shell structure energies for [Formula: see text] isotopes. A relation between variation in critical temperatures caused by shell effects and the shell structure energies determined with and without pairing effects has been established. Furthermore, the systematics of the heat capacity (giving a clear signature of pairing phase transition) as function of temperature for these nuclei are investigated as well.

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ISOSPIN MIXING IN THE HIGHER TAMM-DANCOFF APPROXIMATION

International Journal of Modern Physics E ◽

10.1142/s0218301309013099 ◽

2009 ◽

Vol 18 (04) ◽

pp. 951-957 ◽

Cited By ~ 2

Author(s):

LUDOVIC BONNEAU ◽

JULIEN LE BLOAS ◽

PHILIPPE QUENTIN ◽

JOHANN BARTEL ◽

DANIEL STROTTMAN

Keyword(s):

Nuclear State ◽

Mixing Parameter ◽

Level Model ◽

Pairing Correlations ◽

The Impact ◽

Insight Into ◽

Two Level Model

We present a formalism to study the isospin content of a nuclear state in the framework of the Higher Tamm-Dancoff Approximation. This formalism is then applied to the description of even-even N = Z nuclei. Finally a schematic two-level model provides some insight into the isospin-mixing mechanism at work and the impact of the pairing correlations on the isospin-mixing parameter.

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Enhanced Nuclear State Density Equation in a Two-Component Pre-Equilibrium Exciton Model for Heavy Nuclei

Journal of Al-Nahrain University-Science ◽

10.22401/jnus.18.2.11 ◽

2015 ◽

Vol 18 (2) ◽

pp. 83-89

Author(s):

Rasha S. Ahmed ◽

Keyword(s):

State Density ◽

Nuclear State ◽

Heavy Nuclei ◽

Exciton Model ◽

Two Component ◽

Density Equation

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Electronic shell structure in clusters as reflected in mass abundance spectra

Philosophical Magazine B ◽

10.1080/014186399256655 ◽

1999 ◽

Vol 79 (9) ◽

pp. 1321-1342

Author(s):

Svenbjo Rnholm, Jo Rnborggreen

Keyword(s):

Shell Structure ◽

Electronic Shell

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Electrical Conductivity of Ni-YSZ Anode for SOFCs According to the Ni Powder Size Variations in Core-shell Structure

Korean Journal of Metals and Materials ◽

10.3365/kjmm.2015.53.4.287 ◽

2015 ◽

Vol 53 (4) ◽

pp. 287-293

Author(s):

Byung-Hyun Choi ◽

Young Jin Kang ◽

Sung-Hun Jung ◽

Yong-Tae An ◽

Mi-Jung Ji

Keyword(s):

Electrical Conductivity ◽

Shell Structure ◽

Core Shell ◽

Powder Size ◽

Ni Powder ◽

Core Shell Structure

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Electron state density and anomalies in the electronic and lattice properties of metals and alloys

Uspekhi Fizicheskih Nauk ◽

10.3367/ufnr.0154.198803f.0523 ◽

1988 ◽

Vol 154 (3) ◽

pp. 523 ◽

Cited By ~ 6

Author(s):

M.I. Katsnel'son ◽

A.V. Trefilov

Keyword(s):

Electron State ◽

State Density ◽

Metals And Alloys ◽

Electron State Density

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Exploring Baryon Rich Matter with Heavy-Ion Collisions

Ukrainian Journal of Physics ◽

10.15407/ujpe64.7.583 ◽

2019 ◽

Vol 64 (7) ◽

pp. 583 ◽

Cited By ~ 1

Author(s):

S. Harabasz

Keyword(s):

Center Of Mass ◽

Heavy Ion ◽

State Density ◽

Heavy Nuclei ◽

First Order ◽

Center Of Mass Energy ◽

Ion Collisions ◽

Deconfinement Phase Transition ◽

Ground State Density

Collisions of heavy nuclei at (ultra-)relativistic energies provide a fascinating opportunity to re-create various forms of matter in the laboratory. For a short extent of time (10-22 s), matter under extreme conditions of temperature and density can exist. In dedicated experiments, one explores the microscopic structure of strongly interacting matter and its phase diagram. In heavy-ion reactions at SIS18 collision energies, matter is substantially compressed (2–3 times ground-state density), while moderate temperatures are reached (T < 70 MeV). The conditions closely resemble those that prevail, e.g., in neutron star mergers. Matter under such conditions is currently being studied at the High Acceptance DiElecton Spectrometer (HADES). Important topics of the research program are the mechanisms of strangeness production, the emissivity of matter, and the role of baryonic resonances herein. In this contribution, we will focus on the important experimental results obtained by HADES in Au+Au collisions at 2.4 GeV center-of-mass energy. We will also present perspectives for future experiments with HADES and CBM at SIS100, where higher beam energies and intensities will allow for the studies of the first-order deconfinement phase transition and its critical endpoint.

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