High-Resolution Study of Fluorine Metastable X-Ray Emitters

Abstract
A crystal spectrometer is used to study foil-excited fluorine beam x rays. The transitions from 2P1 and 2P3 to 1S01 He-like fluorine states and the transitions from P2(1) and P4(1) to 1S122 Li-like fluorine states are observed. Lifetimes of 0.537 ± 0.02 and 2.000 ± 0.025 nsec are measured and identified with the 2P13 and either the 2P324(1) or 2P124(1) decays, respectively.