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. http://resolver.caltech.edu/CaltechETD:etd-09092003-120209
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.))|
|Degree Grantor:||California Institute of Technology|
|Division:||Physics, Mathematics and Astronomy|
|Thesis Availability:||Public (worldwide access)|
|Defense Date:||1 January 1951|
|Default Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Imported from ETD-db|
|Deposited On:||09 Sep 2003|
|Last Modified:||26 Dec 2012 02:59|
- Final Version
See Usage Policy.
Repository Staff Only: item control page