Values of the
backscattering energy for an element, or for an isotope, that is located at the surface of a sample.
Source:
PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1833 (https://doi.org/10.1515/pac-2019-0404)