The cluster model for studying even–even light nuclei

2018 ◽  
Vol 96 (11) ◽  
pp. 1230-1234 ◽  
Author(s):  
Nafiseh Roshanbakht ◽  
Mohammad Reza Shojaei
Keyword(s):  
Excited States ◽  
Cluster Model ◽  
Energy Levels ◽  
Light Nuclei ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Potential Well ◽  
Cylindrical Coordinates ◽  
Well Model ◽  
Center Potential

According to the experimental results, even–even light nuclei have cluster structures at some excited states. To study nuclei having two identical clusters we used a two-center potential well model. We calculated the energy levels by solving the Schrödinger equation and evaluating the effect of spin–orbit coupling in cylindrical coordinates. Finally, the results of calculations were applied for the 8Be isotope.

scholarly journals Two-Center Gaussian Potential Well for Studying Light Nucleus in Cluster Structure

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Nafiseh Roshanbakht ◽  
Mohammad Reza Shojaei
Keyword(s):  
Light Nucleus ◽  
Energy Levels ◽  
Cluster Structure ◽  
Spherical Shape ◽  
Light Nuclei ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Potential Well ◽  
Cylindrical Coordinates ◽  
Gaussian Potential

The clustering phenomena are very important to determine structure of light nuclei and deformation of spherical shape is inevitable. Hence, we calculated the energy levels of two-center Gaussian potential well including spin-orbit coupling by solving the Schrödinger equation in the cylindrical coordinates. This model can predict the spin and parity of the light nuclei that have two identical cluster structures.

Ground configuration splitting in UCl5

1977 ◽  
Vol 55 (10) ◽  
pp. 937-942 ◽  
Author(s):  
A. F. Leung ◽  
Ying-Ming Poon
Keyword(s):  
Crystal Field ◽  
Energy Levels ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Coupling Constant ◽  
Point Charge Model ◽  
X Ray Crystallography ◽  
Charge Model ◽  
Crystal Field Parameters

The absorption spectra of UCl5 single crystal were observed in the region between 0.6 and 2.4 μm at room, 77, and 4.2 K temperatures. Five pure electronic transitions were assigned at 11 665, 9772, 8950, 6643, and 4300 cm−1. The energy levels associated with these transitions were identified as the splittings of the 5f1 ground configuration under the influence of the spin–orbit coupling and a crystal field of C2v symmetry. The number of crystal field parameters was reduced by assuming the point-charge model where the positions of the ions were determined by X-ray crystallography. Then, the crystal field parameters and the spin–orbit coupling constant were calculated to be [Formula: see text],[Formula: see text], [Formula: see text], and ξ = 1760 cm−1. The vibronic analysis showed that the 90, 200, and 320 cm−1 modes were similar to the T2u(v6), T1u(v4), and T1u(v3) of an UCl6− octahedron, respectively.

scholarly journals Excited-states of a rhenium carbonyl diimine complex: solvation models, spin–orbit coupling, and vibrational sampling effects

2017 ◽  
Vol 19 (40) ◽  
pp. 27240-27250 ◽  
Author(s):  
Sebastian Mai ◽  
Hugo Gattuso ◽  
Maria Fumanal ◽  
Aurora Muñoz-Losa ◽  
Antonio Monari ◽  
...  
Keyword(s):  
Absorption Spectra ◽  
Excited States ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Implicit Solvation ◽  
Td Dft ◽  
Rhenium Carbonyl ◽  
Solvation Models ◽  
P Absorption

Absorption spectra of [Re(CO)3(imidazole)(phenanthroline)]+ were computed using TD-DFT with QM/MM, frozen-density embedding, and implicit solvation models.

Spin-Orbit Interactions in Semiconductor Quantum Ring in the Presence of Magnetic Field

2019 ◽  
Vol 18 (03n04) ◽  
pp. 1940016
Author(s):  
A. V. Baran ◽  
V. V. Kudryashov
Keyword(s):  
Magnetic Field ◽  
Perturbation Theory ◽  
Constant Magnetic Field ◽  
Energy Levels ◽  
Finite Depth ◽  
Quantum Ring ◽  
Spin Orbit ◽  
Potential Well ◽  
Realistic Potential ◽  
Spin Orbit Interactions

Energy levels of electrons in the semiconductor circular quantum ring are obtained within the framework of perturbation theory in the presence of the Rashba and Dresselhaus spin-orbit interactions and external uniform constant magnetic field. The confinement effect is simulated by the realistic potential well of a finite depth.

ROTATIONAL ENERGY LEVELS OF STATES AND INTENSITIES IN TRANSITIONS: APPLICATIONS TO SOME HEAVIER HYDRIDES

1967 ◽  
Vol 45 (8) ◽  
pp. 2581-2596 ◽  
Author(s):  
I. Kopp ◽  
J. T. Hougen
Keyword(s):  
Energy Levels ◽  
Relative Size ◽  
Orbit Interaction ◽  
Spin Splitting ◽  
Energy Separation ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
First Approximation ◽  
Coupling Case ◽  
Π State

Three topics concerning [Formula: see text] states are discussed: (1) The magnitude of the Ω-type splitting in a [Formula: see text] state arising from a Σ state of even multiplicity has been considered and is found to be given to a first approximation by [Formula: see text]. This result leads to the introduction and discussion of a coupling case (a′) for Σ states. (2) Expressions for the Λ-type splitting in a 2Π state and the spin splitting in a 2Σ state (caused by their mutual interaction via spin-orbit coupling) are derived. These expressions are valid when the rotational intervals are small compared to both the spin-orbit interaction and the 2Π−2Σ energy separation, but do not place any restriction on the relative size of the latter two quantities. (3) Branch intensity expressions are presented which apply to any [Formula: see text] transition in which the [Formula: see text] states are not contaminated (due to uncoupling phenomena) by states having a different value of Ω.

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