THE STUDY OF α + 14C CLUSTER STATES OF 18O THROUGH THE RESONANT BREAKUP REACTION 12C(18O, 14Cα) AT E(18O) = 94.5 MeV

2009 ◽  
Vol 18 (09) ◽  
pp. 1917-1928 ◽  
Author(s):  
S. ADHIKARI ◽  
C. BASU ◽  
B. R. BEHERA ◽  
S. RAY ◽  
A. K. MITRA ◽  
...  
Keyword(s):  
Energy Spectrum ◽  
Excitation Energy ◽  
Cluster Structure ◽  
Breakup Reaction ◽  
Spectroscopy Technique ◽  
Cluster States ◽  
Excitation Energy Spectrum ◽  
Resonant States ◽  
Alpha Cluster

In this work, we study the alpha cluster structure of 18 O using resonant particle spectroscopy technique. Resonance breakup reaction of the projectile is studied experimentally to extract the excitation energy spectrum of the 18 O nucleus. The observed resonant states in the present work are 15.62, 15.82 (5-), 16.02, 16.22, 16.42, 16.92, 17.22, and 17.82 MeV.

Excitation energy spectrum in helium II

1979 ◽  
Vol 20 (9) ◽  
pp. 3709-3711 ◽  
Author(s):  
P. Lu ◽  
C. K. Chan
Keyword(s):  
Energy Spectrum ◽  
Excitation Energy ◽  
Helium Ii ◽  
Excitation Energy Spectrum

scholarly journals Many-Body Fermions and Riemann Hypothesis

2020 ◽  
Author(s):  
Xindong Wang ◽  
Alex Shulman
Keyword(s):  
Energy Spectrum ◽  
Excitation Energy ◽  
Algebraic Structure ◽  
Riemann Hypothesis ◽  
Many Body ◽  
Fermionic System ◽  
Excitation Energy Spectrum ◽  
Quadratic Matrix

We study the algebraic structure of the eigenvalues of a Hamiltonian that corresponds to a many-body fermionic system. As the Hamiltonian is quadratic in fermion creation and/or annihilation operators, the system is exactly integrable and the complete single fermion excitation energy spectrum is constructed using the non-interacting fermions that are eigenstates of the quadratic matrix related to the system Hamiltonian. Connection to the Riemann Hypothesis is discussed.

ALPHA CLUSTERS IN MEDIUM LIGHT NUCLEI: RECENT RESULTS AND OPEN QUESTIONS

2008 ◽  
Vol 17 (10) ◽  
pp. 2025-2028 ◽  
Author(s):  
MARKUS NORRBY ◽  
MÅRTEN BRENNER ◽  
TOM LÖNNROTH ◽  
KJELL-MIKAEL KÄLLMAN
Keyword(s):  
Cross Section ◽  
Energy Levels ◽  
Cluster Structure ◽  
Alpha Particles ◽  
Light Nuclei ◽  
Scattering Data ◽  
Cluster States ◽  
Open Questions ◽  
Alpha Cluster ◽  
Rich Side

The presence of alpha cluster structures in light nuclei is well established. This paper concentrates on the medium light nuclei between 16 O and 44 Ti . Especially the nucleus 32 S has been examined in detail and new data is presented. The elastic scattering data of alpha particles on 28 Si forming 32 S shows a peculiar disappearance of cross section at 31 MeV excitation energy and above. Also, the energy versus J(J + 1) plot shows at least one clear rotational-like band of alpha cluster states, with the main energy levels split into many narrow and closely lying levels with the same spin. Furthermore, few experiments have been carried out investigating the alpha cluster structure of non-nα nuclei, especially on the proton rich side of stability. The evidence at hand indicates that adding neutrons retains some alpha cluster structures and in some cases might even enhance them, but adding protons seems to destroy the structures.

Coupling of a j = 3/2 nucleon to an even–even core with Davidson potential

2018 ◽  
Vol 27 (10) ◽  
pp. 1850085 ◽  
Author(s):  
I. Inci ◽  
H. Sonkaya
Keyword(s):  
Experimental Data ◽  
Energy Spectrum ◽  
Excitation Energy ◽  
Single Particle ◽  
Electric Quadrupole ◽  
Quadrupole Transition ◽  
Excitation Energy Spectrum ◽  
Electric Quadrupole Transition ◽  
Particle Orbit ◽  
Davidson Potential

The properties of odd nuclei have been investigated within the collective model by assuming the system is composed of a single nucleon in the [Formula: see text] single particle orbit coupled to a [Formula: see text]-unstable even-core. The Davidson potential has been used in the corresponding Bohr Hamiltonian for the even core. The excitation energy spectrum and the electric quadrupole transition ratios have been obtained. The results have been used to predict the experimental data of the some selected odd isotopes.

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