neutron cross section


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neutron cross section

[′nü‚trän ′krȯs ‚sek·shən]
(nuclear physics)
A measure of the probability that an interaction of a given kind will take place between a nucleus and an incident neutron; it is an area such that the number of interactions which occur in a sample exposed to a beam of neutrons is equal to the product of the number of nuclei in the sample and the number of neutrons in the beam that would pass through this area if their velocities were perpendicular to it.
References in periodicals archive ?
Experiment planning tools in DAVE Neutron Cross Section Table (Fig, 2) Calculator (Sect.
Topics include power reactor surveillance, including justifications for extended service life in Russian reactors,; test reactors, accelerators, and advanced systems, including determination of adjusted neutron spectra and characterization of neutron fields using innovative techniques; nearly a dozen papers on benchmarks and inter-comparisons, including verification of helium generation,; cross sections and nuclear data in damage correlations, including an international evaluation of the neutron cross section standards; transport calculations; adjustment methods, including those for upgrades and to produce more reliable predictions; and an array of experimental techniques.
Knowing the neutron cross section and the pressure, the number of neutrons/sec absorbed in the 25 mm path length within the reaction chamber was determined as follows.
Vanadium metal is important in a number of areas, its structural strength and neutron cross section properties makes it useful in nuclear applications.
The ENDF/B-VI Neutron Cross Section Measurement Standards, NISTIR 5177 (1993).
It would allow precise measurements of important neutron cross section standards at near-thermal energies, such as [.
The effective thermal neutron cross section [sigma] measured with unpolarized neutrons is a statistical sum of the singlet [[sigma].