Table of Contents
Research Letters in Physics
Volume 2009, Article ID 832413, 5 pages
Research Letter

On the Appearance of a Cooper Minimum in the Photoionization Cross Sections of the Plasma-Embedded Li Atom

1Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei-106, Taiwan, China
2Department of Physics, Raidighi College, South 24 Parganas, West Bengal, Pin-743383, India

Received 13 April 2009; Accepted 14 June 2009

Academic Editor: Eric G. Blackman

Copyright © 2009 Satyabrata Sahoo and Y. K. Ho. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The plasma screening effect is found to uncover a Cooper minimum in the photoionization cross sections from the ground state of the Li atom embedded in Debye plasma environment. The variation of the location of this minimum with Debye screening length is discussed and analyzed in terms of the instability of the ground state.