Work

Li K α Emission Spectrum of LiF Under Electron Beam Irradiation

Year: 2026

Type: article

Abstract: ABSTRACT It is possible to obtain the Li Kα spectrum of LiF on an electron microprobe, with minimal damage, provided a low acceleration energy (1 kV) and a small current density (1 pA/μm 2 ) are used. The presented spectrum agrees with the one obtained with synchrotron radiation many years ago and is expected to be free of damage. The spectrum displays two main peaks: the first one at c.a . 47 eV coming from the electron transition from the occupied valence states toward the Li 1s core level; the second one at c.a . 62 eV giving evidence of the radiative recombination of the lithium core exciton. These features, as well as the background due to cathodoluminescence, change drastically after 1 min of electron irradiation, due to fluorine leaving the sample and the subsequent oxidation of the remaining lithium atoms in the residual atmosphere of the microprobe.

Source: X-Ray Spectrometry

DOI: 10.1002/xrs.70077

Authors: Philippe Jonnard, Karine Le Guen, Nawel Temmar, Anthony Boucly, Wanqiu Bai, Nicolas Rividi

Institutions: Centre National de la Recherche Scientifique, Sorbonne Université, Laboratoire de Chimie Physique - Matière et Rayonnement, Observatoire des sciences de l'Univers Paris-Centre Ecce Terra

Language: English

Topic: X-ray Spectroscopy and Fluorescence Analysis

Subfield: Radiation

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Agence Nationale de la Recherche, CHIST-ERA

Award: Spectroscopy and quantification of lithium by x-ray microanalysis