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Phys. Rev. A 54, 1342 - 1350 (1996)

Polarization measurements on a magnetic quadrupole line in Ne-like barium

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E. Takács, E. S. Meyer, J. D. Gillaspy, and J. R. Roberts
Atomic Physics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899

C. T. Chantler, L. T. Hudson, and R. D. Deslattes
Quantum Metrology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899

C. M. Brown and J. M. Laming
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, D.C. 20375

J. Dubau
Observatoire de Paris, CNRS UPR No. 176, 92195 Meudon Cedex, France

M. K. Inal
Institut des Sciences Exactes, Departement de Physique, Boite Postale 119, 13000 Tlemcen, Algeria

Received 12 December 1995

We have measured the absolute polarization of the 2p61S0-2p5(2P3/2o)3s[3/2]2o magnetic quadrupole transition in Ne-like barium, excited in an electron-beam ion trap at a variety of energies. We find strong evidence for the existence of resonant excitation processes that are not explained by our collisional-radiative calculations even when the polarization arising from impact excitation is included. At energies well away from where the resonances occur, the agreement between experiment and theory is good. © 1996 The American Physical Society.


©1996 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.54.1342
DOI: 10.1103/PhysRevA.54.1342
PACS: 32.10.-f, 32.30.Rj, 34.80.Kw

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