Cross section at a given beam energy and emission direction of the detected product for a particular nuclear reaction per atom.
Note: SI unit \(\pu{m2}\). Commonly used unit barn, \(\pu{1 barn} = \pu{E-28 m2}\).
Source:
PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1834 (https://doi.org/10.1515/pac-2019-0404)