(p, n) Cross Section and Proton Optical-Model Parameters in the 4- to 5.5-Mev Energy Region

1959 ◽  
Vol 115 (4) ◽  
pp. 925-927 ◽  
Author(s):  
Richard D. Albert
Keyword(s):  
Cross Section ◽  
Energy Region ◽  
Optical Model ◽  
Model Parameters

scholarly journals Neutron inelastic cross section measurements on 54Fe

2020 ◽  
Vol 239 ◽  
pp. 01010
Author(s):  
Adina Olacel ◽  
Catalin Borcea ◽  
Marian Boromiza ◽  
Philippe Dessagne ◽  
Gregoire Henning ◽  
...  
Keyword(s):  
Cross Section ◽  
Optical Model ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Analysis Procedure ◽  
Model Parameters ◽  
Electron Linear Accelerator ◽  
Section Measurement ◽  
Data Analysis Procedure ◽  
Experimental Values

A 54Fe(n, n'γ) cross section measurement was performed at the Geel Electron LINear Accelerator of EC-JRC, Geel using the Gamma Array for Inelastic Neutron Scattering spectrometer and a 235U fission chamber for flux normalization. The experimental results are presented in comparison with talys 1.9 default and tuned calculations. The tuned calculation, implying modifications of the optical model parameters, improved significantly the description of the experimental values and led to interesting conclusions regarding the interaction of the 54Fe nucleus with neutrons. Since the results of these calculations were already presented extensively in a dedicated paper, the present article focuses on details related to the experimental particularities and data analysis procedure.

Evaluation of Optical Model Potential Using Neutron Induced Cross Section Reaction for Spherical Uranium-238 Isotope up to 20MeV

2015 ◽  
Vol 59 ◽  
pp. 26-34
Author(s):  
Iman Tarik Al-Alawy ◽  
Ronak Ikram Ali
Keyword(s):  
Experimental Data ◽  
Energy Range ◽  
Cross Section ◽  
Cross Sections ◽  
Optical Model ◽  
Threshold Energy ◽  
Model Potential ◽  
Model Parameters ◽  
Incident Neutron ◽  
Optical Model Potential

The evaluation are based on mainly on the calculations of the nuclear optical model potential and relevant parameters are collected and selected from References Input Parameter Library (RIPL) which is being developed under the international project coordinated by the International Atomic Energy Agency (IAEA). The analyzing of a complete energy range has done starting from threshold energy for each reaction. The cross sections are reproduced in fine steps of incident neutron energy with 0.01MeV intervals with their corresponding errors. The recommended cross sections for available experimental data taken from EXFOR library have been calculated for all the considered neutron induced reactions for U-238 isotopes. The calculated results are analyzed and compared with the experimental data. The optimized optical potential model parameters give a very good agreement with the experimental data over the energy range 0.001-20MeV for neutron induced cross section reactions (n,f), (n,tot), (n,el), (n,inl), (n,2n), (n,3n), and (n,γ) for spherical U-238 target elements.

scholarly journals Optical Model Potential Using CINDA Library for Neutron Induced Cross Section Reactions for Spherical Uranium-235,238 Isotopes

2015 ◽  
Vol 60 ◽  
pp. 66-73
Author(s):  
Iman Tarik Al-Alawy ◽  
Ronak Ikram Ali
Keyword(s):  
Experimental Data ◽  
Energy Range ◽  
Cross Section ◽  
Cross Sections ◽  
Optical Model ◽  
Threshold Energy ◽  
Model Potential ◽  
Model Parameters ◽  
Incident Neutron ◽  
Optical Model Potential

The calculation are based mainly on the nuclear optical model potential and relevant parameters are collected and selected from References Input Parameter Library (RIPL) which is being developed under the international project coordinated by the International Atomic Energy Agency (IAEA). The analyzing of a complete energy range has done starting from threshold energy for each reaction. The cross sections are reproduced in fine steps of incident neutron energy with 0.01MeV intervals with their corresponding errors. The recommended cross sections for available experimental data taken from CINDA library have been calculated for all the considered neutron induced reactions for spherical U-235 and U-238 isotopes. The calculated results are analyzed and compared with the experimental data. The optimized optical potential model parameters give a very good agreement with the experimental data over the energy range 0.001-20MeV for neutron induced cross section reactions (n,f), (n,tot), (n,el), (n,inl), (n,2n), (n,3n), and (n,γ) for spherical U-235 and U-238 target elements.

Vector analyzing powers for the reaction to a transitional nucleus 147Nd

1977 ◽  
Vol 55 (19) ◽  
pp. 1697-1703 ◽  
Author(s):  
O. Straume ◽  
G. Løvhøiden ◽  
D. G. Burke ◽  
J. C. Waddington
Keyword(s):  
Cross Section ◽  
Proportional Counter ◽  
Focal Plane ◽  
Optical Model ◽  
Mass Region ◽  
Angular Distributions ◽  
Model Parameters ◽  
Analyzing Powers ◽  
Dwba Calculation ◽  
Position Sensitive

The [Formula: see text] reaction has been studied using 17 MeV deuterons with a vector polarization of ~0.75 from the McMaster University tandem Van de Graaff accelerator. Measurements were made at 18 angles from 6° to 57.5° using a magnetic spectrograph equipped with a position-sensitive proportional counter in the focal plane. It was found that the [Formula: see text] reaction is a very powerful technique for spin determinations in this mass region as the vector analyzing powers have quite large magnitudes. A DWBA calculation with optical model parameters previously optimized to fit cross-section angular distributions was also successful in predicting the analyzing powers for states of known spin and parity. The measured analyzing powers made it possible to give unambiguous spin assignments for over 15 states for which spin information was previously conflicting, incomplete, or lacking.

Cross Section Measurements for the Reactions 53Cr(p,g)54Mn, 53Cr(p,n)53Mn and 53Cr(p, p')53Cr

1981 ◽  
Vol 34 (1) ◽  
pp. 25 ◽  
Author(s):  
HJ Gardner ◽  
LW Mitchell ◽  
SR Kennett ◽  
MR Anderson ◽  
DG Sargood
Keyword(s):  
Statistical Model ◽  
Cross Section ◽  
Cross Sections ◽  
Proton Energy ◽  
Optical Model ◽  
Model Parameters ◽  
Model Calculations ◽  
Isobaric Analogue ◽  
Theory And Experiment

Cross sections have been measured for the reactions 53Cr(p, y)5 4Mn, 53Cr(p, n)53Mn and 53Cr(p, p/)53Cr over the proton energy range O'88-2'40 MeV. The results are compared with the predictions of statistical model, calculations with global optical model parameters, with particular reference to the role of isobaric analogue resonances. Satisfactory agreement between theory and experiment is achieved for all three reactions.

scholarly journals Scattering of High Energy Polarized Nucleons by Complex Nuclei

1959 ◽  
Vol 12 (3) ◽  
pp. 248 ◽  
Author(s):  
BA Robson
Keyword(s):  
Elastic Scattering ◽  
Energy Region ◽  
Optical Model ◽  
High Energy ◽  
Model Parameters ◽  
Wkb Method ◽  
Substantial Agreement ◽  
Simplified Form ◽  
Complex Nuclei

The elastic scattering of 220 MeV polarized nucleons by carbon and calcium is studied using a new expression for the polarization. Except at small angles of scattering, substantial agreement is obtained with the results of calculations using a simplified form of the WKB method. Optical model parameters are found which are compared with those obtained by other workers for this energy region.

Use of Al analyzing power

1979 ◽  
Vol 57 (4) ◽  
pp. 505-507 ◽  
Author(s):  
M. A. M. Shahabuddin ◽  
L. Buja-Bijunas ◽  
W. R. Stott ◽  
J. C. Waddington
Keyword(s):  
Cross Section ◽  
Optical Model ◽  
Angular Distributions ◽  
Model Parameters ◽  
Analyzing Power

The [Formula: see text] Al cross section and analyzing power angular distributions were measured at Ep = 17.0 MeV. The fits to the cluster DWBA calculations have shown that the analyzing power can play an important role in the determination of the correct optical model parameters.

scholarly journals Neutron Capture Cross Section Measurement of Praseodymium in the Energy Region from 0.003 eV to 140 keV

2003 ◽  
Vol 40 (7) ◽  
pp. 447-456 ◽  
Author(s):  
Jungran YOON ◽  
Samyol LEE ◽  
Shuji YAMAMOTO ◽  
Katsuhei KOBAYASHI ◽  
Taeik RO
Keyword(s):  
Cross Section ◽  
Neutron Capture ◽  
Energy Region ◽  
Capture Cross Section ◽  
Capture Cross ◽  
Neutron Capture Cross Section ◽  
Cross Section Measurement ◽  
Section Measurement

Optical Model Parameters for the Ar-36+α and Ca-40+α Systems

2005 ◽  
Author(s):  
L. Generalov
Keyword(s):  
Optical Model ◽  
Model Parameters

Differential KL → KS regeneration cross section in coherent production model and optical model

1974 ◽  
Vol 73 (1) ◽  
pp. 23-39 ◽  
Author(s):  
W.L. Wang ◽  
Fumiyo Uchiyama
Keyword(s):  
Cross Section ◽  
Optical Model ◽  
Production Model
Sign in / Sign up

Export Citation Format

Share Document