Typical Cross Sections
In the following, some cross sections which are of importance in a nuclear reactor are given. The thermal cross-section is averaged using a Maxwellian spectrum and the fast cross section is averaged using the uranium-235 fission spectrum. The cross sections are taken from the Jeff-3.1.1 library using Janis software.
| Thermal cross section (barn) | Fast cross section (barn) | ||||||
| Scattering | Capture | Fission | Scattering | Capture | Fission | ||
| Moderator | H-1 | 2E+1 | 2E-1 | - | 4E+0 | 4E-5 | - |
| H-2 | 4E+0 | 3E-4 | - | 3E+0 | 7E-6 | - | |
| C (nat) | 5E+0 | 2E-3 | - | 2E+0 | 1E-5 | - | |
| Structural materials, others | Zr-90 | 5E+0 | 6E-3 | - | 5E+0 | 6E-3 | - |
| Fe-56 | 1E+1 | 2E+0 | - | 2E+1 | 3E-3 | - | |
| Cr-52 | 3E+0 | 5E-1 | - | 3E+0 | 2E-3 | - | |
| Ni-58 | 2E+1 | 3E+0 | - | 3E+0 | 8E-3 | - | |
| O-16 | 4E+0 | 1E-4 | - | 3E+0 | 3E-8 | - | |
| Absorber | B-10 | 2E+0 | 2E+3 | - | 2E+0 | 4E-1 | - |
| Cd-113 | 1E+2 | 3E+4 | - | 4E+0 | 5E-2 | - | |
| Xe-135 | 4E+5 | 2E+6 | - | 5E+0 | 8E-4 | - | |
| In-115 | 2E+0 | 1E+2 | - | 4E+0 | 2E-1 | - | |
| Fuel | U-235 | 1E+1 | 6E+1 | 3E+2 | 4E+0 | 9E-2 | 1E+0 |
| U-238 | 9E+0 | 2E+0 | 2E-5 | 5E+0 | 7E-2 | 3E-1 | |
| Pu-239 | 8E+0 | 4E-2 | 7E-2 | 5E+0 | 5E-2 | 2E+0 | |
Read more about this topic: Neutron Cross Section
Famous quotes containing the words typical, cross and/or sections:
“A building is akin to dogma; it is insolent, like dogma. Whether or no it is permanent, it claims permanence, like a dogma. People ask why we have no typical architecture of the modern world, like impressionism in painting. Surely it is obviously because we have not enough dogmas; we cannot bear to see anything in the sky that is solid and enduring, anything in the sky that does not change like the clouds of the sky.”
—Gilbert Keith Chesterton (1874–1936)
“The cross of the Legion of Honor has been conferred on me. However, few escape that distinction.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)
“Childhood lasts all through life. It returns to animate broad sections of adult life.... Poets will help us to find this living childhood within us, this permanent, durable immobile world.”
—Gaston Bachelard (1884–1962)