Resonance cross-section

{
  "id": "MLC-T-CHM-010244",
  "term": "Resonance cross-section",
  "field": "Chemistry",
  "definition": "The effective area presented by a nucleus for the resonant absorption of a gamma ray in Mössbauer spectroscopy, representing the probability of the interaction. This cross-section is at its maximum at the exact resonance energy and is described by the Breit-Wigner formula. Its maximum value depends on the gamma-ray wavelength, the nuclear spin states of the ground and excited levels, and the internal conversion coefficient.",
  "subject": "Physical and Biophysical Chemistry",
  "references": [
    "PAC, 1976, 45, 211. 'Nomenclature and Conventions for Reporting Mössbauer Spectroscopic Data' on page 214 (https://doi.org/10.1351/pac197645030211)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/resonance-cross-section/"
}