Precision Measurements of Gamma-Ray Wavelengths of the Radium and Thorium Series Using the Focussing Crystal Spectrometer

Citation

Klein, David Joseph (1951) Precision Measurements of Gamma-Ray Wavelengths of the Radium and Thorium Series Using the Focussing Crystal Spectrometer. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/DEEP-WY61. https://resolver.caltech.edu/CaltechETD:etd-09092003-120209

Abstract

The curved crystal spectrometer is described very briefly. The preparation and mounting of sources of radon and radiothorium for use in the instrument is described. Certain calculations of line profiles to be observed are carried out and a graphical method is given which permits rapid estimate of the important features of the profile as functions of the source geometry. The construction of multicellular Geiger counters and measurements of their efficiency are described. The results of precision measurements of five gamma-ray lines and one x-ray line of the radium spectrum are given, as well as those of site gamma-ray lines of the thorium spectrum.

Item Type:	Thesis (Dissertation (Ph.D.))
Subject Keywords:	(Physics and Mathematics)
Degree Grantor:	California Institute of Technology
Division:	Physics, Mathematics and Astronomy
Major Option:	Physics
Minor Option:	Mathematics
Thesis Availability:	Public (worldwide access)
Research Advisor(s):	DuMond, Jesse William Monroe
Thesis Committee:	Unknown, Unknown
Defense Date:	1 January 1951
Record Number:	CaltechETD:etd-09092003-120209
Persistent URL:	https://resolver.caltech.edu/CaltechETD:etd-09092003-120209
DOI:	10.7907/DEEP-WY61
Default Usage Policy:	No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:	3397
Collection:	CaltechTHESIS
Deposited By:	Imported from ETD-db
Deposited On:	09 Sep 2003
Last Modified:	24 Apr 2023 22:00

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