Chemistry and Chemical Biology ETDs

Publication Date

5-27-1959

Abstract

With the advent of good commercially available photomultiplier tubes, scintillation counters have become increasingly popular for laboratory use. Although there are a number of materials such as ionic crystals, covalent crystals, plastics, and liquid organic solutions, which are used in scintillation counters, liquid organic solutions offer distinct advantages. Because the organic solutes used in liquid scintillation systems have decay times of the order of 10-8 second, systems with resolving times of the order of 5x10-10 second may be obtained. This represents an improvement by a factor of 104 over gas counters and 102 over scintillation systems using ionic crystals. Also, liquid scintillators are relatively free from self absorption and can be prepared with case in large volume units for large object counting (humans, food stuffs). By proper utilization of the fact that the liquid scintillator can use a great variety of scintillation solutes and can be made in u wide range of sizes and geometrics, it is possible to use the liquid scintillator in a multitude of counting applications. For instance, it has been found that making suitable changes in the liquid scintillator system, both charged and uncharged particles as well as electromagnetic radiation can be detected and counted.

Project Sponsors

Los Alamos Scientific Laboratory (Contract SC-5)

Language

English

Document Type

Dissertation

Degree Name

Chemistry

Level of Degree

Doctoral

Department Name

Department of Chemistry and Chemical Biology

First Committee Member (Chair)

Guido Herman Daub

Second Committee Member

F. Newton Hayes

Third Committee Member

Milton Kahn

Fourth Committee Member

Raymond N. Castle

Fifth Committee Member

Jesse LeRoy Riebsomer

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