Fission neutrons [electronic resource] : experiments, evaluation, modeling and open problems / Nikolay Kornilov.
Kornilov, Nikolay, author.
2014
QC790
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Title Fission neutrons [electronic resource] : experiments, evaluation, modeling and open problems / Nikolay Kornilov.
Author Kornilov, Nikolay, author.
ISBN 9783319071336 electronic book
3319071335 electronic book
9783319071329
DOI https://doi.org/10.1007/978-3-319-07133-6
Published Cham : Springer, [2014]
Copyright ©2015
Language English
Description 1 online resource (vi, 132 pages) : illustrations.
Item Number 10.1007/978-3-319-07133-6 doi
Call Number QC790
Dewey Decimal Classification 539./627
Summary Although the fission of heavy nuclei was discovered over 75 years ago, many problems and questions still remain to be addressed and answered. The reader will be presented with an old, but persistent problem of this field: The contradiction between Prompt Fission Neutron (PFN) spectra measured with differential (microscopic) experiments and integral (macroscopic and benchmark) experiments (the Micro-Macro problem). The difference in average energy is rather small ~3% but it is stable and we cannot explain the difference due to experimental uncertainties. Can we measure the PFN spectrum with hig.
Bibliography, etc. Note Includes bibliographical references.
Access Note Access limited to authorized users.
Source of Description Description based on online resource; title from PDF title page (SpringerLink, viewed August 5, 2014).
Available in Other Form Fission Neutrons : Experiments, Evaluation, Modeling and Open Problems
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Chapter-1; Introduction; References; Chapter-2; Experiment; 2.1 Microscopic Experiments; 2.1.1 Methods of FF Counting; 2.1.2 Neutron Spectroscopy by TOF Method; 2.1.3 Time-Correlated Background; 2.1.4 Time Shift in Neutron Detector; 2.1.5 Neutron-Gamma Discrimination and its Influence on Result; 2.1.6 Measurement of the ND Efficiency; 2.1.7 Time Resolution and "Bin" Corrections; 2.1.8 Additional Time Spread for "Solid Sample" Experiment at Low Input Energy; 2.1.9 Possible Distortion Factors in Second Type Experiment

2.1.10 The Calculation of the Detector Efficiency with High Accuracy up to 20 MeV2.1.11 Correction for Neutron Scattering in FF Detector; 2.1.12 Multidetector Systems and "Cross Talk Correction"; 2.2 Macroscopic Experiments; References; Chapter-3; Microscopic Spectra Evaluation. Semiempirical Modeling; 3.1 Maxwellian Function and Terrell's Systematic; 3.2 252Cf Spectrum Evaluation; 3.3 Two Watt Spectra (TWS) Approach; 3.4 Maxwellian Together with Power Expansion for 235U(th); 3.5 Scale Method; 3.6 PFNS for Multiple Chance Fission; References; Chapter-4; Physical Models

4.1 Basis for Theoretical Modeling4.2 True or Plausible Results?; 4.3 Model Realized in Code FINE (FIssion Neutron Emission); 4.3.1 Estimation of the Two-Dimensional Y(A,TKE) Distribution; 4.3.2 Neutron Emission from Excited Fragments; 4.3.3 Monte Carlo Simulation of Energy-Angular Distribution. Verification; 4.3.4 Level Density Verification; 4.4 Comparison Experimental and Calculated Results; References; Chapter-5; Achievements and Still Open Problems; 5.1 Real Achievements; 5.2 Mechanism of Neutron Emission in Fission

5.3 Left-Right and Angular Effects for Fission Neutron Emission at 0.5 MeV Input Energy5.4 Contradiction Between Microscopic and Macroscopic experiments (Mic-Mac Problem); 5.5 New Experimental Proposals

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