APS » PROLA » Phys. Rev. Lett. » Volume 76 » Issue 24

Phys. Rev. Lett. 76, 4496 - 4499 (1996)

First Angle-Resolved Photoelectron Measurements following Inner-Shell Resonant Excitation in a Singly Charged Ion
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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
Institut de Physique Nucléaire, Bâtiment 100, Université Paris-Sud, 91405 Orsay Cedex, France

T. J. Morgan
Wesleyan University, Middletown, Connecticut 06457

M. Richter
Technische Universität Berlin, D-10623 Berlin, Germany

Received 12 January 1996

We have measured the angular distribution of electrons emitted in the autoionization of the giant resonance 3p64s 2S→[(3p53d 1P)4s]2P 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±0.13, suggesting that LS coupling remains a good approximation for the description of this ionic resonance.


©1996 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v76/p4496
DOI: 10.1103/PhysRevLett.76.4496
PACS: 32.80.Hd, 32.80.Fb

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