Radiation from the Negative Lithium Ion

R. L. Brooks; J. E. Hardis; H. G. Berry; L. J. Curtis; K. T. Cheng; W. Ray

doi:10.1103/PhysRevLett.45.1318

Radiation from the Negative Lithium Ion

R. L. Brooks, J. E. Hardis, H. G. Berry, L. J. Curtis, K. T. Cheng, and W. Ray

Phys. Rev. Lett. 45, 1318 – Published 20 October 1980

Abstract

It is confirmed that the 3489-Å transition observed in beam-foil excited lithium spectra originates from the negative lithium ion. It is most probably the transition $1 s 2 s 2 p^{2} {}^{5}P - 1 s 2 p^{3} {}^{5}S^{\circ}$ , as suggested by Bunge. A new electric field acceleration technique provides identification of the charge state of the emitting ion. The decay curve is a cascade-free single exponential. The polarization and beam energy dependence of the light yield have also been measured. The transition has been identified in heavier isoelectronic ions.

Received 16 July 1980

DOI:https://doi.org/10.1103/PhysRevLett.45.1318

Authors & Affiliations

R. L. Brooks, J. E. Hardis^*, H. G. Berry, L. J. Curtis^†, K. T. Cheng, and W. Ray

Argonne National Laboratory, Argonne, Illinois 60439

^*Also at Department of Physics, University of Chicago, Chicago, III. 60637.
^†Permanent address: Department of Physics and Astronomy, University of Toledo, Toledo, Ohio 43606.