scholarly journals Statistical model calculations of 72,73Ge(n,p) and 72,74Ge(n,α) reactions on natural Ge

2020 ◽  
Vol 15 ◽  
pp. 104
Author(s):  
S. Galanopoulos ◽  
R. Vlastou ◽  
P. Demetriou ◽  
M. Kokkoris ◽  
C. T. Papadopoulos ◽  
...  
Keyword(s):  
Statistical Model ◽  
Energy Range ◽  
Neutron Energy ◽  
Cross Sections ◽  
Reaction Cross ◽  
Model Calculations ◽  
Monoenergetic Neutron ◽  
Theoretical Investigations ◽  
Equilibrium Emission ◽  
Reaction Cross Sections

Systematic experimental and theoretical investigations of the 72,73Ge(n,p)72,73 Ga and 72,74Ge(n,α)69,71Znm reaction cross sections are presented in the energy range from thresh- old to about 17 MeV neutron energy. The above reaction cross sections were measured from 8.8 to 11.4 MeV by using the activation method, relative to the 27Al(n,α)24Na refer- ence reaction. The quasi-monoenergetic neutron beams were produced via the 2H(d,n)3He reaction at the 5 MV VdG Tandem T11/25 accelerator of NCSR “Demokritos”. Statisti- cal model calculations using the code EMPIRE-II (version 2.19) taking into consideration pre-equilibrium emission were performed on the data measured in this work as well as on data reported in literature.

scholarly journals Thermonuclear Reaction Rates for Reactions Leading to N = 28 Nuclei

1995 ◽  
Vol 48 (1) ◽  
pp. 125
Author(s):  
A.J Morton ◽  
DG Sargood
Keyword(s):  
Statistical Model ◽  
Nuclear Reaction ◽  
Cross Sections ◽  
Optical Model ◽  
Reaction Rates ◽  
Reaction Cross ◽  
Model Parameters ◽  
Thermonuclear Reaction ◽  
Model Calculations ◽  
Reaction Cross Sections

Nuclear reaction cross sections derived from statistical-model calculations have been used in the calculation of thermonuclear reaction rates for 36 nuclei at temperatures that are representative of the interiors of evolving stars and supernovae as nucleosynthesis approaches the production of nuclei with N = 28. The statistical-model calculations used optical-model parameters in the particle channels which had been selected to give the best overall agreement between theoretical and experimental cross sections for reactions on stable target nuclei in the mass and energy ranges of importance for the stellar conditions of interest. The optical-model parameters used, and the stellar reaction rates obtained, are tabulated. Comparisons are made between these stellar rates and those from other statistical-model calculations in the literature.

scholarly journals Statistical-model calculations for α-capture reactions relevant to the p process

2019 ◽  
Vol 26 ◽  
pp. 228
Author(s):  
C. Fakiola ◽  
I. Karakasis ◽  
I. Sideris ◽  
A. Khaliel ◽  
T. J. Mertzimekis
Keyword(s):  
Experimental Data ◽  
Statistical Model ◽  
Cross Sections ◽  
Theoretical Calculations ◽  
Reaction Network ◽  
Reaction Cross ◽  
Model Parameters ◽  
Model Calculations ◽  
Reaction Channels ◽  
Reaction Cross Sections

About 35 nuclides which lie on the neutron deficient side of the isotopic chart cannot be created by the two basic nucleosynthetic processes, the sand the rprocess. Due to scarce experimental data and the vast complexity of the reaction network involved, cross sections and reactions are estimated theoretically, using the Hauser–Feshbach statistical model. In the present work, theoretical calculations of cross sections of radiative α-capture reactions on the neutron–deficient Erbium and Xenon isotopes are presented in an attempt to make predictions inside the astrophysically relevant energy window (Gamow). The particular reactions are predicted to be sensitive branchings in the γprocess path.The most recent versions of TALYS (v1.9) and Fresco codes were employed for all calculations, initially focusing on investigating the influence of the default eight (8) α–nucleus optical potential models of TALYS on reaction cross sections. The theoretical results of both codes are compared and for the reactions where experimental data exist in literature, the optical model parameters were adjusted appropriately to best describe the data and were subsequently used for estimating (α,γ) reaction cross sections. Predictions for the (α,n) reaction channels have also been calculated and studied.

scholarly journals Isomeric Cross Section Study of neutron induced reactions on Ge

2020 ◽  
Vol 16 ◽  
pp. 169
Author(s):  
R. Vlastou ◽  
S. Galanopoulos ◽  
C. T. Papadopoulos ◽  
M. Kokkoris ◽  
M. Serris ◽  
...  
Keyword(s):  
Statistical Model ◽  
Cross Section ◽  
Cross Sections ◽  
Reaction Cross ◽  
Model Calculations ◽  
Section Study ◽  
Reaction Cross Sections

The72Ge(n,α)69mZn, 74Ge(n,α)71mZn, 76Ge(n,2n)75g+mGe reaction cross sections have been measured from 9.6 to 11.4 MeV and studied, along with data from litera- ture, within the frame of statistical model calculations by using the code EMPIRE-II.

Measurement of Th232(n,γ) reaction cross sections in the neutron energy range of 11–19 MeV

2018 ◽  
Vol 98 (1) ◽  
Author(s):  
Siddharth Parashari ◽  
S. Mukherjee ◽  
A. P. Singh ◽  
Vibha Vansola ◽  
H. Naik ◽  
...  
Keyword(s):  
Energy Range ◽  
Neutron Energy ◽  
Cross Sections ◽  
Reaction Cross ◽  
Neutron Energy Range ◽  
Reaction Cross Sections

Calculation of proton total reaction cross sections for some target nuclei in incident energy range of 10–600 MeV

2010 ◽  
Vol 73 (10) ◽  
pp. 1700-1706 ◽  
Author(s):  
H. Büyükuslu ◽  
A. Kaplan ◽  
A. Aydin ◽  
E. Tel ◽  
G. Yıldırım
Keyword(s):  
Energy Range ◽  
Cross Sections ◽  
Incident Energy ◽  
Reaction Cross ◽  
Total Reaction ◽  
Reaction Cross Sections

scholarly journals Evaluation of neutron induced reactions on 56Fe with CONRAD

2020 ◽  
Vol 239 ◽  
pp. 11005 ◽  
Author(s):  
M. Diakaki ◽  
S. Chen ◽  
G. Noguere ◽  
D. Bernard ◽  
P. Tamagno ◽  
...  
Keyword(s):  
Statistical Model ◽  
Energy Range ◽  
Fast Neutron ◽  
Neutron Energy ◽  
Resonance Region ◽  
Covariance Matrices ◽  
Neutron Energy Range ◽  
Model Calculations ◽  
First Results ◽  
The Continuum

The evaluation of the 56Fe neutron induced reactions is currently ongoing at the CEA-Cadarache using the code CONRAD, with the goal to cover the whole energy range from the Resolved Resonance Region to the continuum and estimate the corresponding uncertainties and covariance matrices. Some first results and issues occurred from this work are presented and discussed here, more specifically on the analysed transmission and capture data in the Resolved Resonance Region, as well as the optical and statistical model calculations in the fast neutron energy range.

Microscopic analysis of the energy dependence of the 6He, 6Li + 28Si total reaction cross sections in the energy range E = 5−50 A MeV

2008 ◽  
Vol 72 (3) ◽  
pp. 356-360
Author(s):  
K. V. Lukyanov ◽  
E. V. Zemlyanaya ◽  
V. K. Lukyanov ◽  
I. N. Kukhtina ◽  
Yu. E. Penionzhkevich ◽  
...  
Keyword(s):  
Energy Range ◽  
Energy Dependence ◽  
Cross Sections ◽  
Microscopic Analysis ◽  
Reaction Cross ◽  
Total Reaction ◽  
Reaction Cross Sections

Measurement and covariance analysis of 100Mo (n, 2n) 99Mo and 96Mo (n, p) 96Nb reaction cross sections at the incident neutron energy of 14.54 MeV

2020 ◽  
Vol 325 (3) ◽  
pp. 831-840
Author(s):  
Sangeetha Prasanna Ram ◽  
Jayalekshmi Nair ◽  
Saraswatula Venkata Suryanarayana ◽  
Laxman Singh Danu ◽  
Saroj Bishnoi ◽  
...  
Keyword(s):  
Neutron Energy ◽  
Cross Sections ◽  
Reaction Cross ◽  
Covariance Analysis ◽  
Incident Neutron ◽  
Incident Neutron Energy ◽  
Reaction Cross Sections
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