Electron Capture Cross-Section of a Negative Ion Vacancy in NaCl at Room Temperature

Abstract

With a high intensity spark-light a temporary bleaching is obtained in γ-rays coloured NaCl crystals at room temperature. From measurements of the changes in F and F′ centre concentrations and the production of free electrons, during this bleaching, the electron capture cross-section of a negative ion vacancy is obtained. For the ground state a value of ∼6×10⁻¹² cm² is found.