scholarly journals Information on Energy Levels in 8Be from Neutron Energy Spectra

1955 ◽  
Vol 8 (4) ◽  
pp. 567 ◽  
Author(s):  
JR Bird ◽  
RH Spear
Keyword(s):  
Neutron Energy ◽  
Energy Levels ◽  
Energy Spectra ◽  
Final Nucleus

A number of measurements have been made of the neutron energy spectra emitted in the reaction 7Li(d, n)8Be, and, as is the case for other reactions leading to the same final nucleus, contradictory conclusions have been reached as to the number of levels observed.

Simulation and analysis of time-dependent neutron energy spectra

1995 ◽  
Vol 37 (10) ◽  
pp. 1187-1196 ◽  
Author(s):  
B Wolle ◽  
U Gerstel ◽  
K Hubner ◽  
L -G Eriksson ◽  
G Sadler ◽  
...  
Keyword(s):  
Neutron Energy ◽  
Time Dependent ◽  
Energy Spectra

Neutron-Energy Spectra for Fast Reactor Irradiation Effects

1970 ◽  
Vol 9 (4) ◽  
pp. 454-507 ◽  
Author(s):  
D. Okrent ◽  
W. B. Loewenstein ◽  
A. D. Rossin ◽  
A. B. Smith ◽  
B. A. Zolotar ◽  
...  
Keyword(s):  
Neutron Energy ◽  
Fast Reactor ◽  
Energy Spectra ◽  
Reactor Irradiation ◽  
Irradiation Effects

Measurement of neutron energy spectra behind shielding of a 120GeV/c hadron beam facility

2006 ◽  
Vol 562 (2) ◽  
pp. 950-953 ◽  
Author(s):  
Noriaki Nakao ◽  
Shingo Taniguchi ◽  
Sayed H. Rokni ◽  
Stefan Roesler ◽  
Markus Brugger ◽  
...  
Keyword(s):  
Neutron Energy ◽  
Energy Spectra ◽  
Hadron Beam

MCNP simulation of neutron energy spectra for a TN-32 dry shielded container

2008 ◽  
Vol 35 (7) ◽  
pp. 1296-1300 ◽  
Author(s):  
Sylena E. Smith ◽  
Xiaodong Sun ◽  
C. Alan Ford ◽  
Audeen W. Fentiman
Keyword(s):  
Neutron Energy ◽  
Energy Spectra ◽  
Mcnp Simulation

scholarly journals Влияние деформации на энергетический спектр и спектр оптического поглощения фуллерена C-=SUB=-20-=/SUB=- в модели Хаббарда

2019 ◽  
Vol 61 (2) ◽  
pp. 395
Author(s):  
А.В. Силантьев
Keyword(s):  
Group Theory ◽  
Hubbard Model ◽  
Symmetry Group ◽  
Energy Levels ◽  
Analytical Form ◽  
Symmetry Reduction ◽  
Energy Spectra ◽  
Symmetry Groups ◽  
Static Fluctuation Approximation ◽  
Static Fluctuation

Abstract —Anticommutator Green’s functions and energy spectra of fullerene C_20 with the I _ h , D _5 d , and D _3 d symmetry groups have been obtained in an analytical form within the Hubbard model and static fluctuation approximation. The energy states have been classified using the methods of group theory, and the allowed transitions in the energy spectra of fullerene C_20 with the I _ h , D _5 d , and D _3 d symmetry groups have been determined. It is also shown how the energy levels of fullerene C_20 with the I _ h symmetry group are split with the symmetry reduction.

Study of High-spin States for 90,91,92Y Isotopes by Using Oxbash Code

2021 ◽  
Vol 14 (1) ◽  
pp. 25-33
Keyword(s):  
Experimental Data ◽  
Transition Probabilities ◽  
Energy Levels ◽  
Model Space ◽  
Low Energy ◽  
Energy Spectra ◽  
Spin States ◽  
Nuclear Shell Model ◽  
High Spin States ◽  
Nuclear Shell

Abstract: In this paper, calculations of 90,91,92Y isotopes have been performed by application of nuclear shell model in the Gloeckner (Gl) model space for two different interactions (Gloeckner (Gl) and Gloeckner pulse bare G-Matrix (Glb) using Oxbash code. The energy levels are compared and discussed with experimental data and based on our results, many predictions about spins and parity were observed between experimental states, in addition to the predictions of low-energy spectra and B (E2; ↓) and B (M1; ↓)) transitional strengths in the isotopes 90,91,92Y. These predictions were not known in the experimental data. Keywords: Energy levels, Transition probabilities, Oxbash code.

scholarly journals Theoretical investigation of energy levels and transition data for S II, Cl III, Ar IV

2019 ◽  
Vol 623 ◽  
pp. A155 ◽  
Author(s):  
P. Rynkun ◽  
G. Gaigalas ◽  
P. Jönsson
Keyword(s):  
Energy Levels ◽  
Electric Quadrupole ◽  
General Purpose ◽  
Energy Spectra ◽  
Astrophysical Plasmas ◽  
Internal Validation ◽  
Hartree Fock ◽  
Self Energy ◽  
Relativistic Configuration ◽  
Relativistic Configuration Interaction

Aims. The aim of this work is to present accurate and extensive results of energy spectra and transition data for the S II, Cl III, and Ar IV ions. These data are useful for understanding and probing physical processes and conditions in various types of astrophysical plasmas.Methods. The multiconfiguration Dirac–Hartree–Fock (MCDHF) and relativistic configuration interaction (RCI) methods, which are implemented in the general-purpose relativistic atomic structure package GRASP2K, are used in the present work. In the RCI calculations the transverse-photon (Breit) interaction, the vacuum polarization, and the self-energy corrections are included.Results. Energy spectra are presented comprising the 134, 87, and 103 lowest states in S II, Cl III, and Ar IV, respectively. Energy levels are in very good agreement with NIST database recommended values and associated with smaller uncertainties than energies from other theoretical computations. Electric dipole (E1), magnetic dipole (M1), and electric quadrupole (E2) transition data are computed between the above states together with the corresponding lifetimes. Based on internal validation, transition rates for the majority of the stronger transitions are estimated to have uncertainties of less than 3%.

scholarly journals Geometric Models of the Relativistic Harmonic Oscillator

1997 ◽  
Vol 12 (20) ◽  
pp. 3545-3550 ◽  
Author(s):  
Ion I. Cotăescu
Keyword(s):  
Harmonic Oscillator ◽  
Finite Number ◽  
Continuous Spectrum ◽  
Energy Levels ◽  
Nonrelativistic Limit ◽  
Energy Spectra ◽  
De Sitter ◽  
Geometric Models ◽  
Relativistic Harmonic Oscillator ◽  
Quantum Models

A family of relativistic geometric models is defined as a generalization of the actual anti-de Sitter (1 + 1) model of the relativistic harmonic oscillator. It is shown that all these models lead to the usual harmonic oscillator in the nonrelativistic limit, even though their relativistic behavior is quite different. Among quantum models we find a set of models with countable energy spectra, and another one having only a finite number of energy levels and in addition a continuous spectrum.

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