Absolute photoionization cross-section measurements of the excited <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>4</mn><mi>D</mi></math></span> and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>5</mn><mi>S</mi></math></span> states of sodium

A. V. Smith; J. E. M. Goldsmith; D. E. Nitz; S. J. Smith

doi:10.1103/PhysRevA.22.577

Absolute photoionization cross-section measurements of the excited $4 D$ and $5 S$ states of sodium

A. V. Smith, J. E. M. Goldsmith, D. E. Nitz, and S. J. Smith

Phys. Rev. A 22, 577 – Published 1 August 1980

Abstract

We have measured the absolute cross section for photoionization of the $4 D$ and $5 S$ excited states of sodium for 1.06 μm radiation. The method of measurement is based on saturation of ionization probability at high intensity of the ionizing radiation. The measured cross sections for ionization of unaligned atoms are 15.2±1.7 Mb for the $4 D$ state and 1.49±0.13 Mb for the $5 S$ state, both in excellent agreement with calculated values.

Received 24 March 1980

DOI:https://doi.org/10.1103/PhysRevA.22.577

Authors & Affiliations

A. V. Smith, J. E. M. Goldsmith, D. E. Nitz^*, and S. J. Smith^†

Joint Institute for Laboratory Astrophysics, University of Colorado and National Bureau of Standards, Boulder, Colorado 80309

^*Present address: Physics Department, St. Olaf College, Northfield, Minn. 55057.
^†Quantum Physics Division, National Bureau of Standards.

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Vol. 22, Iss. 2 — August 1980

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