Assertion: cross section | /r/AtLocation | the region of 0.001 barn
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text: Observed cross sections vary enormously - for example, slow neutrons absorbed by the (n, γ {\displaystyle \gamma } ) reaction show a cross section much higher than 1,000 barns in some cases (boron-10, cadmium-113, and xenon-135), while the cross sections for transmutations by gamma-ray absorption are in the region of 0.001 barn.