Neutron Cross Section Database

Nist continues to be deeply involved with measurements and evaluations of neutron cross section standards.

Neutron cross section database. Nist maintains a limited experimental effort focused on improvements to the database of the standards. The larger the neutron cross section the more likely a neutron. This neutron cross section chart table gives the neutron cross section of all the elements of periodic table.

Select the element and you will get a list of scattering lengths and cross sections. In conjunction with the neutron flux it enables the calculation of the reaction rate for example to derive the thermal power of a nuclear power plant. The ngatlas contains neutron capture cross sections in the range 10 5ev 20mev as evaluated and compiled in recent activation libraries.

In nuclear and particle physics the concept of a neutron cross section is used to express the likelihood of interaction between an incident neutron and a target nucleus. Neutron cross section standards are important in the measurement and evaluation of all other neutron reaction cross sections. All of this data was taken from the special feature section of neutron scattering lengths and cross sections of the elements and their isotopes in neutron news vol.

The pdf version contains tables of simple integral neutron cross section data for the main reaction channels as well as tables of reaction q values for residual production cross sections. More information is provided in each of the following books. The most recent evaluations were completed in 2005 and a report was published in 2007 sti pub 1291.

Numerical values of n g cross sections are available for a total of 739 targets for the elements h z 1 a 1 to cm z 96 a 248 totaling 972 reactions. Links in the index provide access to more information about the individual materials including raw and interpreted views of the endf file and pdf plots of the cross sections and distributions. The standard unit for measuring the cross section is the barn which is equal to 10 28 m2 or 10 24 cm2.

Neutron cross section chart neutron cross section of all the elements in table chart. Plots of the pointwise data and comparisons with the available experimental values at thermal energy 30 kev and 14 5 mev can be found in the report indc nds 362 iaea vienna 1997 available upon. Up to date curated data provided by mathematica s elementdata function from wolfram research inc.