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Type of Document	Dissertation
Author	Fowler, William Alfred
URN	etd-10112002-114537
Persistent URL	http://resolver.caltech.edu/CaltechETD:etd-10112002-114537
Title	Radioactive elements of a low atomic number
Degree	PhD
Option	Physics
Advisory Committee	Advisor Name Title Unknown Committee Member
Keywords	None
Date of Defense	1936-01-01
Availability	unrestricted
Abstract Radioactive elements of low atomic number have been produced by the transmutation of various elements from lithium to fluorine by high velocity deuterons. The distribution in energy of the electrons and positrons emitted by these elements has been determined by employing a Wilson cloud chamber traversed by a magnetic field. The electron spectra nave been found to have maximum energies from 5 to 13 MEV while the positron spectra have maximum energies from 1 to 2 MEV. The form of the spectra has been found to be in agreement with a modification of the Fermi theory of beta-decay proposed by Konopinski and Uhlenbeck. The correlation of the maximum energies of the spectra with the energies calculated from the reactions in which the radioactive element is involved is shown to await a more accurate determination in the difference in mass between the neutron and proton.
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