Abstract.
The photoionization cross-section and number density of the 3p 2P1/2,3/2 excited levels of sodium have been measured as a function of the laser energy using two-step laser excitation in conjunction with a thermionic diode working in the space charge limited mode. Employing the saturation technique, the cross-sections for the 3p 2P1/2 and 3p 2P3/2 levels are determined as 2.16 (43) Mb and 3.74 (74) Mb respectively.
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Amin, N., Mahmood, S., Anwar-ul-Haq, M. et al. Measurement of the photoionization cross-section of the 3p 2P1/2, 3/2 excited levels of sodium. Eur. Phys. J. D 37, 23–28 (2006). https://doi.org/10.1140/epjd/e2005-00261-y
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DOI: https://doi.org/10.1140/epjd/e2005-00261-y