Experimental Absolute f-Values for Lines of Ni, Co, Au, and Ag

Author: Lawrence, George Melvin

Year: 1963

Degree: Dissertation (Ph.D.)

Advisor: King, Robert Burnett

Committee Member: Unknown, Unknown

Option: Physics

DOI: 10.7907/2Z34-KM92

Abstract

Absolute f-values are determined for strong lines of Ni, Co, Au, and Ag by the atomic beam absorption method of Bell, Davis, King, and Routly. The equivalent widths of the absorption lines are measured photoelectrically and the density of absorbing atoms in the beam is determined from the beam geometry, kinetic theory, and a microbalance measurement of the atomic beam flux. A comparison is made to existing absolute f-values and a fit is made to relative f-values in the literature.

Evidence is presented that the .1-.4 ev states of cobalt are underpopulated in the atomic beam.

A description of the automatic microbalance, the photoelectric scanning system, and an ionization gauge used to monitor the atomic beam is given.

A review of the experimental analysis is given for the purpose of illuminating sources of error and of defining the experimental quantities.

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