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2 edition of Measurements and applications of the excitation functions for fast neutron induced reactions. found in the catalog.

Measurements and applications of the excitation functions for fast neutron induced reactions.

Raik A. Jarjis

Measurements and applications of the excitation functions for fast neutron induced reactions.

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Published by University of Aston in Birmingham. Department of Physics in Birmingham .
Written in English


Edition Notes

SeriesPh. D. Thesis
ID Numbers
Open LibraryOL19625290M

A facility for detection of scattered neutrons in the energy interval MeV, SCANDAL (SCAttered Nucleon Detection AssembLy), has recently been installed at the 20 - MeV neutron beam line of The Svedberg Laboratory, Uppsala. Elastic neutron scattering from 12C, 16O, 56Fe, 89Y, and Pb has been studied at 96 MeV in the deg. interval. A large number of new measurements with the activation technique were performed for (n,2n) and neutron-induced {delta}Z=1,2 reaction cross sections on the stable molybdenum isotopes in the energy range from to 21 MeV. Proposal for a Solenoidal Spectrometer to Study Reactions with Short-Lived Beams A. H. Wuosmaa1, B. B. more conventional approaches to measurements of key reactions, and is essential to the study of which provide information related to cross sections in neutron-induced reactions on shortlived isotopes, and are needed for stockpile. Radiation - Radiation - Neutrons: A neutron is an uncharged particle with the same spin as an electron and with mass slightly greater than a proton mass. In free space it decays into a proton, an electron, and an antineutrino and has a half-life of about 12–13 minutes, which is so large compared with lifetimes of interactions with nuclei that the particle disappears predominantly by such.


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Measurements and applications of the excitation functions for fast neutron induced reactions. by Raik A. Jarjis Download PDF EPUB FB2

Excitation functions of neutron induced reactions were measured in the energy range – MeV by means of the activation method.

Results for the following reactions are reported: (n, 2n) reaction in N 14, F 19, K 39, Ga 69 and Sr 88, (n, p) reaction in F 19 and Zn 66 and (n, α) reaction Cited by: Measurements and applications of the excitation functions for fast neutron induced reactions Author: Jarjis, Raik A.

ISNI: Awarding Body: University of Aston in Birmingham Current Institution: Aston University Date of Award: Author: Raik A. Jarjis. Measurements and applications of the excitation functions for fast neutron induced reactions By Raik A.

Jarjis OAI identifier: oai:or: Raik A. Jarjis. The importance of a knowledge of the excitation function of reaction used as monitors for 14 MeV flux measurements is discussed. The information on excitation functions of frequently used reactions is summarised and some new measurements are reported.

by: 3. In this work, the excitation functions for protons induced nuclear reactions with stainless steel's constituent elements were measured and the results were used in Proton Activation Analysis (PAA) of 18/10 steel samples which was carried out at Egyptian MGC by: 1.

Systematics for excitation functions for (n,2n) reactions are presented, based on the dependence of position and value of the maximum cross-section, t Cited by: 9.

Excitation functions of some (n, p), (n, 2n) and (n,α) reactions usually employed as standard monitors have been measured by activation in the range ( ÷ ) MeV neutron energy with an energy spread of ≈ 50 keV. The results have been compared with the best fits obtained for the same reactions from the known data in the range ( ÷ ) by: The excitation functions for the reactions induced by protons on Cd and Cd, and on Cd have been measured radiochemically in the proton energy range from 5 to 37 by: Abstract.

Excitation functions for the production of 68 Ga, 67 Ga, 66 Ga, 65 Ga + 65 Zn and 61 Cu fromα-induced reactions in natural copper have been measured in the energy range ≈ 10–40 MeV using the stacked foil technique.A stack of nine copper foils was irradiated by a 40 γ-rays emitted from the irradiated samples were tion functions have also been Cited by: Excitation Functions of Neutron Induced Reactions on some Isotopes of Zinc, Gallium and Germanium in the Energy Range of to MeV Article (PDF Available) in Radiochimica Acta Neutron Induced Reactions Proceedings of the 4th International Symposium Smolenice, Czechoslovakia, June Deriving Excitation Function of 27Al[(n,t)+(n,nt)] Reaction from Measurement Performed in Diverse Neutron Fields.

Pages Brand: Springer Netherlands. Introduction to neutron-induced reactions and the R-matrix formalism Frank Gunsing CEA Saclay, Irfu, F Gif-sur-Yvette France On leave at CERN, CH Gen Switzerland September Introduction One of the most striking features of neutron-nucleus interactions is the resonance.

In view of plans for future fusion reactors with high fast neutron fluxes, the need for precise measurements of cross sections of various nuclear reactions has increased, e.g., the data oh (n,2n) reactions are important for calculating the neutron multiplication, those on (n,p) and (n,a) reactions for evaluating the radiation damage.

Deriving Excitation Function of 27 Al[(n,t)+(n,nt)] Reaction from Measurement Performed in Diverse Neutron Fields. Excitation functions were calculated for the α-particle induced reactions In(α,x)mSn, Cd(α,n)mSn, Cd(α,3n)mSn and natCd(α,x)mSn to analyse the.

Neutron activation cross-sections on different isotopes of Zr for 15 to 21 MeV incident en-ergy. 33 Measurements and nuclear model calculations for neutron induced reactions on I, I isotopes up to 21 MeV 36 Measurement of the inelastic neutron scattering cross section for Ni at high resolution.

45File Size: 4MB. The neutron induced reactions were studied using the fast neutron spectrum produced in the break-up of 53 MeV deuterons on Be. The excitation function of the (α, n) reaction was measured over Eα. Deuterons are weakly bound nuclei which easily undergo break up reactions.

This is well known at low energies, around 10 MeV, where deuteron beams have been used to produce neutrons very efficiently. These neutrons have a widely application field such as fission energy production and hybrid reactor systems. In this study, neutron emission cross sections produced by (d,2n) reactions Cited by: 6.

The main purpose of this study is the investigation of a cross section of proton induced nuclear reactions. The excitation functions of the reactions: 56 Fe(p,2n) 55 Co 58 Fe(p,2n) 57 Co, Cd(p,2n) In, Cd(p,2n) In, Te(p,2n) I, Te(p,2n) I, 68 Zn(p,2n) 67 Gawere investigated. These reactions were studied as the resulting radioisotopes are used in medical Author: Susan Shukur Noori, İskender Akkurt, Nurdan Karpuz Demir.

Excitation functions and average range measurements are reported for the (alpha, alphan), (3He, alpha), (alpha, 3n), and (3He, 2n) reactions of Cd. Isomer ratios for reactions leading to m.

A new technique of neutron energy measurement not requiring neutron collimation is described. The method employs the nuclear reaction Li 6 (n, α)H 3 (Q= Mev) observed within photographic emulsions impregnated with enriched Li s on monoenergetic neutrons indicate a resolution of at least ± Mev in the region studied (from thermal energies up to Mev).Cited by: 4.

Abstract. The measurement of the capture cross-section of fissile elements, of utmost importance for the design of innovative nuclear reactors and the management of nuclear waste, faces particular difficulties related to the \(\gamma\)-ray background generated in the competing fission the CERN neutron time-of-flight facility n_TOF we have combined the Total Absorption Cited by: Excitation functions were measured for production of 66,67Ga, 62,65,69mZn, 61,64,67Cu and 58Co radioisotopes in deuteron induced reactions on natural Zn up to 50 MeV by activation using stacked.

Temperature shift of neutron resonances.- Chemically induced shifts of uranium neutron resonances.- GDR excitation in 58Ni(n,p)58Co reaction at MeV neutron energy (poster).- Fission.- Invited talks.- Measurement and theoretical calculation of the Cf spontaneous-fission neutron spectrum.- (n,p), (n,?) and neutron induced ternary fission.

Level Excitation Function Data for Fast Neutron Scattering on Actinide Nuclei Calculated with the Unified Statistical S-Matrix Formalism. Measurement and Hybrid Model Analysis of Integral Excitation Functions for α-Induced Reactions on Vanadium and Manganese. Nuclear Data for Science and Technology Book SubtitleBrand: Springer Netherlands.

In this work, the reaction cross-section for neutron-induced reactions on I isotope was calculated using EXIFON code in the energy range of incident particle from 0 MeV to 30 MeV. The code is based on an analytical model for statistical multistep direct and multistep compound reactions (SMD/SMC model).

In order to see the effect of nuclear structure on cross sections, the calculation was Cited by: 1. To estimate the induced activity, excitation functions of the various radionuclides were calculated using the two Experiments of fast neutron-induced reactions at intermediate energies (En = 20 Measurement and theoretical estimation of induced activity in natIn Figure 1.

Schematic view of the experimental arrangement. Excitation Function for the Reaction 11 B Application and Validation of Event Generator in the PHITS Code for the Low-Energy Neutron-Induced Reactions.

Prog. Nucl. Sci. Scientific Reports Cited by: 4. Important Applications/Issues Associated with Neutron Activation 1. Neutron Activation Analysis (NAA) This is an extraordinarily powerful technique for identifying General and quantifying various elements (and nuclides) in a sample.

Neutron Fluence Rate (Flux) Measurements Neutron fluence rates in reactors or other neutron sources. Introduction CDCC Applications CDCC* Excitation functions for (d,p) reaction Conclusion CHAU Huu-Tai Pierre CEA/DAM/DIF CDCC P(ND) - October Introduction.

Deuteron induced reactions are useful tools 1 to investigate nuclear structure via elastic, inelastic or transfer reactions.

Neutron flux measurement using fast-neutron activation of 12B and 12N isotopes in hydrocarbonate scintillators M. Boliev At the same time, inelastic neutron-induced reactions with the carbon of the scintillator allow to measure the neutron flux with sufficient accu-racy.

During the passage of the neutrons through the scintillator Author: Makhti Kochkarov, Mousabi Boliev, Yurii Novoseltsev, Rita Novoseltseva, Valerii Petkov. Known for its comprehensive coverage and up-to-date literature citations, this classic text provides students and instructors with the most complete coverage available of radiation detection and measurement.

Over the decade that has passed since the publication of the 3rd edition, technical developments continue to enhance the instruments and techniques available for the detection and. @article{osti_, title = {Fast neutron capture cross section measurements, evaluations and model calculations of fission product nuclei.

5 to 4. 0 MeV]}, author = {Poenitz, W. P.}, abstractNote = {The fast-neutron capture cross sections of elemental rhodium, palladium, neodymium, and samarium were measured in the energy range to MeV relative to the standard capture cross. neutron-induced reactions, neutron target, nucleosynthesis, storage rings and a high flux reactor or a spallation source would allow a direct measurement of neutron-induced reactions over a wide energy range of isotopes with half-lives down to minutes [11, 12].

Neutron-induced reactions in nuclear astrophysics.). Abstract. Advanced modelling of neutron induced reactions on U nucleus is aimed at improving our knowledge of the neutron scattering.

Capture and fissio n channels are well constrained by available experimental data and neutron standard evaluation. A fo-cus of this contribution is on elastic and inelastic scattering cross sections. The employedCited by: Owing to the high neutron flux, experimental nuclear reactors operating in the maximum thermal power region of kW MW with a maximum thermal neutron flux of 10 14 neutrons cm-2 s-1 are the most efficient neutron sources for high sensitivity activation analysis induced by epithermal and thermal neutrons.

The reason for the high Cited by: NEUTRON-INDUCED REACTIONS IN TISSUE-RESIIDENT ELEMENTS 1. INTRODUCTION Inencouraging results for the neutron radiotherapy treatment of cancer were reported from the Hammersmith Hospital at the Conference on Particle Accelerators in Radiation Therapy 1].

At the. A Wallner NEMEA-7 / CIELO - neutron-induced reactions on actinides Motivation: U(n,)/Th(n,): E n > thermal ratio of capture to fission of the fissile isotopes existing data via TOF and detections of prompt -rays; multiple scattering corrections due to large sample size in previous exp.

(e.g. 2 gram). The proton induced nuclear reactions on (86)Sr, (88)Sr and (nat)Zr were investigated for the production of (86)Y. The literature data were compared with the results of nuclear model calculations using the codes ALICE-IPPE, TALYS and EMPIRE The thick target yields of (86)Y were calculated from the recommended excitation by: 8.

Neutron-Induced Nuclear Fission 5 Fig. Binding energy per nucleon. (From Ref. 1; used with permission of McGraw-Hill.) Neutron-Induced Fission When a neutron is absorbed into a heavy nucleus (A,Z) to form a compound nu- cleus (A+1,Z),theBE/A value is lower for the compound nucleus than for the original Size: KB.

Cross sections of deuteron induced nuclear reactions on metal targets fast neutron sources (IFMIF), in thin layer activation technol-ogy (TLA), in medical radioisotope production, in activation analysis, etc. The Technical Meeting on Nuclear Data for the excitation functions File Size: 53KB.Measurement and theoretical calculation of the Cf spontaneous-fission neutron spectrum.- (n,p), (n,?) and neutron induced ternary fission reactions.- Contributions.- Peculiarities of mean kinetic energy dependence of fragments at nuclei fission by neutrons (poster)The barium fluoride crystals are scintillation (light generating) detectors with very fast response time, and are therefore suitable for high count rate experiments.

Actual neutron capture events must be reliably distinguished from background {gamma}-rays, which are always present in neutron induced reactions.