Two-component equilibration in the exciton model of nuclear reactions

1981 ◽  
Vol 303 (4) ◽  
pp. 329-333 ◽  
Author(s):  
S. K. Gupta
Keyword(s):  
Nuclear Reactions ◽  
Exciton Model ◽  
Two Component

Production cross-section calculations of 111In via proton and alpha-induced nuclear reactions

2021 ◽  
Vol 36 (08) ◽  
pp. 2150051
Author(s):  
H. Özdoğan ◽  
İsmail Hakki Sarpün ◽  
Mert Şekerci ◽  
Abdullah Kaplan
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Nuclear Reactions ◽  
Production Cross ◽  
Weighting Matrix ◽  
Nuclear Models ◽  
Geometry Dependent Hybrid Model ◽  
Equilibrium Reactions ◽  
Two Component ◽  
Gamma Emitter

[Formula: see text], a known gamma emitter, is used for many medical purposes such as imaging of myocardial metastases. It can be produced by using different nuclear reactions. In this study, the reactions of [Formula: see text]Ag([Formula: see text]2n)[Formula: see text], [Formula: see text](p,[Formula: see text]n)[Formula: see text], [Formula: see text](p,[Formula: see text]2n)[Formula: see text], [Formula: see text](p,[Formula: see text]3n)[Formula: see text] and [Formula: see text](p,[Formula: see text]4n)[Formula: see text], which are the production routes of [Formula: see text], were investigated. Production cross-section calculations were performed by using equilibrium and pre-equilibrium models of TALYS 1.95 and EMPIRE 3.2 nuclear reaction codes. Hauser–Feshbach Model was appointed in both codes for calculations of equilibrium approximations. Exciton and Hybrid Monte Carlo Simulation (HMS) models were used in the EMPIRE 3.2, whereas Two-Component Exciton and Geometry Dependent Hybrid Model, which is implemented to TALYS code, has been used in the TALYS 1.95 for pre-equilibrium reactions. Also, a weighting matrix of the nuclear models was obtained by using statistical variance analysis. The optimum beam energy to obtain [Formula: see text] has been determined by using the results obtained from this weighting matrix.

Cascade-exciton model of nuclear reactions

1983 ◽  
Vol 401 (2) ◽  
pp. 329-361 ◽  
Author(s):  
K.K. Gudima ◽  
S.G. Mashnik ◽  
V.D. Toneev
Keyword(s):  
Nuclear Reactions ◽  
Exciton Model

Level Density of the Pre Compound Nucleus Calculations for [28 60Ni], [28 58Ni], Using Exciton Model

2021 ◽  
Vol 900 ◽  
pp. 34-41
Author(s):  
Maha Taha Idrees
Keyword(s):  
Energy Dependence ◽  
Compound Nucleus ◽  
Level Density ◽  
Major Effect ◽  
State Density ◽  
Hole State ◽  
Two Component System ◽  
Exciton Model ◽  
Component System ◽  
Two Component

The level density for the pre compound [28 60Ni],[2858Ni], at certain exciton number, are calculated for one &two component system based on Ericson's formula. The Pauli, Slight and Pairing correction are examined with the behavior of the level density for one & two components. The particle – hole state density has been calculated by means of the energy dependence of excited number in [28 60Ni], [2858Ni]. The present results are compared between one &two component with Pauli, Slight and Pairing correction. The Pairing correction has a major effect in the present calculations. Keyword: level density, Exciton model, [28 60Ni],[2858Ni], , Formula ESM.

Microscopic two-component multistep direct theory for continuum nuclear reactions

1997 ◽  
Vol 56 (2) ◽  
pp. 970-994 ◽  
Author(s):  
A. J. Koning ◽  
M. B. Chadwick
Keyword(s):  
Nuclear Reactions ◽  
Two Component ◽  
Direct Theory

An exciton model approach to the analysis of α-particle-induced nuclear reactions

1976 ◽  
Vol 6 (1) ◽  
pp. 1-38 ◽  
Author(s):  
E. Gadioli ◽  
E. Gadioli Erba ◽  
L. Sajo-Bohus ◽  
G. Tagliaferri
Keyword(s):  
Nuclear Reactions ◽  
Exciton Model ◽  
Model Approach

scholarly journals A Comparison Between the Theoretical Cross Section Based on the Partial Level Density Formulae Calculated by the Exciton Model with the Experimental Data for (_79^197)Au nucleus

2021 ◽  
Vol 18 (1) ◽  
pp. 0139
Author(s):  
Athraa Abdullah ◽  
Ali D Salloum
Keyword(s):  
Experimental Data ◽  
Cross Section ◽  
Level Density ◽  
Experimental Cross Section ◽  
Theoretical Cross Section ◽  
Exciton Model ◽  
Experimental Cross ◽  
Two Component ◽  
The One ◽  
Acceptable Agreement

In this paper, the theoretical cross section in pre-equilibrium nuclear reaction has been studied for the reaction  at energy 22.4 MeV. Ericson’s formula of partial level density PLD and their corrections (William’s correction and spin correction) have been substituted  in the theoretical cross section and compared with the experimental data for  nucleus. It has been found that the theoretical cross section with one-component PLD from Ericson’s formula when  doesn’t agree with the experimental value and when . There is little agreement only at the high value of energy range with  the experimental cross section. The theoretical cross section that depends on the one-component William's formula and on-component corrected to spin PLD formula doesn't agree with the experimental cross section. But in case of theoretical cross section based on two-component Ericson's and William's PLD formulae it has been found that there is acceptable agreement when the exciton number is taken .  

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