Oscillator Strength Measurements of Even-Parity Autoionizing Resonances by Combined Synchrotron-Radiation-Laser Excitation

J. M. Bizau; F. Wuilleumier; D. L. Ederer; J. C. Keller; J. L. LeGouët; J. L. Picqué; B. Carré; P. M. Koch

doi:10.1103/PhysRevLett.55.1281

Oscillator Strength Measurements of Even-Parity Autoionizing Resonances by Combined Synchrotron-Radiation-Laser Excitation

J. M. Bizau, F. Wuilleumier, D. L. Ederer, J. C. Keller, J. L. LeGouët, J. L. Picqué, B. Carré, and P. M. Koch

Phys. Rev. Lett. 55, 1281 – Published 16 September 1985

Abstract

We have obtained oscillator strengths for transitions between a laser-excited initial state and autoionizing final states. In the case of sodium, a laser was used to populate the $3 p$ initial state, and synchrotron radiation was used to excite the autoionizing resonances. These transitions are of the type $2 p^{6} 3 p {}^{2}P \to 2 p^{5} ({}^{2}P) 3 s 3 p ({}^{1, 3}P) {}^{2, 4}S, {}^{2, 4}P, {}^{2, 4}D$ ; they decay to $2 p^{6} {}^{1}S + e$ . The sum of the oscillator strengths for all the observed transitions between the $2 p^{6} 3 p$ initial-state and the $2 p^{5} 3 s 3 p$ final-state configurations was found to be equal to 0.22(4).

Received 31 May 1985

DOI:https://doi.org/10.1103/PhysRevLett.55.1281

Authors & Affiliations

J. M. Bizau and F. Wuilleumier

Laboratoire de Spectroscopie Atomique et Ionique and Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Université Paris-Sud, 91405 Orsay, France

D. L. Ederer