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Theoretical studies of photoionization


Nascimento, Marco Antonio Chaer (1976) Theoretical studies of photoionization. Master's thesis, California Institute of Technology. doi:10.7907/FP9D-JD91.


The photionization cross-section is shown to be directly related to the imaginary part of the frequency dependent polarizability. Using this relation, an approximate representation of the frequency-dependent polarizability is constructed from a discrete set of transition frequencies and oscillator strengths, which in turn is used in an analytical continuation procedure for complex values of the frequency. The great advantage of the method resides on the fact that the use of a discrete representation for the dynamic polarizability explicitly avoids the use of continuum functions. The method is applied to the calculation of the photoionization cross-section for the 2^1S and 2^3S metastable states of the He atom and for the H^- atom. Further improvements of the technique are suggested.

Item Type:Thesis (Master's thesis)
Subject Keywords:Chemistry
Degree Grantor:California Institute of Technology
Division:Chemistry and Chemical Engineering
Major Option:Chemistry
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Unknown, Unknown
Thesis Committee:
  • Unknown, Unknown
Defense Date:15 June 1976
Record Number:CaltechTHESIS:04302010-100258173
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5761
Deposited By: Tony Diaz
Deposited On:04 Aug 2010 16:00
Last Modified:21 Dec 2019 04:00

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