First Angle-Resolved Photoelectron Measurements following Inner-Shell Resonant Excitation in a Singly Charged Ion

S. Al Moussalami; J. M. Bizau; B. Rouvellou; D. Cubaynes; L. Journel; F. J. Wuilleumier; J. Obert; J. C. Putaux; T. J. Morgan; M. Richter

doi:10.1103/PhysRevLett.76.4496

First Angle-Resolved Photoelectron Measurements following Inner-Shell Resonant Excitation in a Singly Charged Ion

S. Al Moussalami, J. M. Bizau, B. Rouvellou, D. Cubaynes, L. Journel, F. J. Wuilleumier, J. Obert, J. C. Putaux, T. J. Morgan, and M. Richter

Phys. Rev. Lett. 76, 4496 – Published 10 June 1996

Abstract

We have measured the angular distribution of electrons emitted in the autoionization of the giant resonance ${3 p}^{6} 4 s {}^{2}S \to [({3 p}^{5} 3 d {}^{1}P) 4 s]^{2} P$ in ${Ca}^{+}$ ions over the profile of the resonance. The absolute value of the asymmetry parameter we have determined at the top of the resonance is $β = 1.89 \pm 0.13$ , suggesting that $LS$ coupling remains a good approximation for the description of this ionic resonance.

Received 12 January 1996

DOI:https://doi.org/10.1103/PhysRevLett.76.4496

Authors & Affiliations

S. Al Moussalami, J. M. Bizau, B. Rouvellou, D. Cubaynes, L. Journel, and F. J. Wuilleumier

Laboratoire de Spectroscopie Atomique et Ionique and Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Bâtiment 350, Université Paris-Sud, 91405 Orsay Cedex, France

J. Obert and J. C. Putaux