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Precision Wavelength Measurements of the Annihilation Radiation from Copper 64 and Gamma-Radiation Following Decay of Gold 198 and Tantalum 182

Citation

Hoyt, Harry Charles (1952) Precision Wavelength Measurements of the Annihilation Radiation from Copper 64 and Gamma-Radiation Following Decay of Gold 198 and Tantalum 182. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/DY6H-6607. https://resolver.caltech.edu/CaltechTHESIS:10112017-100346458

Abstract

The geometry, kinematics, and operation of the curved crystal gamma-ray spectrometer are briefly described. The effect of a recently discovered systematic non-linearity is discussed in some detail. A new calibration of the instrument and the means taken to correct for the non-linearity are described. Error-contributing factors are analyzed, and their contributions to the final error are estimated. The three principal components of the observed line profile are discussed.

A new measurement of the annihilation radiation is reported. The relation of this measurement to the determination of the mass of the positron is discussed. Measurements of the wavelength of the 411 Kev gamma-ray line following decay of Au198 are given. Wavelengths of sixteen gamma-ray lines following decay of Ta182 are tabulated. The formulation of an energy level scheme for its daughter W182 is discussed.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Physics
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • DuMond, Jesse William Monroe
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1952
Funders:
Funding AgencyGrant Number
Office of Naval ResearchUNSPECIFIED
Atomic Energy CommissionUNSPECIFIED
Record Number:CaltechTHESIS:10112017-100346458
Persistent URL:https://resolver.caltech.edu/CaltechTHESIS:10112017-100346458
DOI:10.7907/DY6H-6607
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10502
Collection:CaltechTHESIS
Deposited By: Benjamin Perez
Deposited On:11 Oct 2017 17:49
Last Modified:21 Dec 2019 04:53

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