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. 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 standard unit for measuring the cross section is the barn, which is equal to 10−28 m2 or 10−24 cm2.
Read more about Neutron Cross Section: Parameters of Interest, Link To Reaction Rate and Interpretation, Continuous Versus Average Cross Section, Microscopic Versus Macroscopic Cross Section, Mean Free Path, Within Stars, Typical Cross Sections
Famous quotes containing the words cross and/or section:
“It is an agreeable change to cross a lake, after you have been shut up in the woods, not only on account of the greater expanse of water, but also of sky. It is one of the surprises which Nature has in store for the traveler in the forest. To look down, in this case, over eighteen miles of water, was liberating and civilizing even.”
—Henry David Thoreau (1817–1862)
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—Sugar Rautbord, U.S. socialite fund-raiser and self-described “trash” novelist. As quoted in The Great Divide, book 2, section 7, by Studs Terkel (1988)