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Type of Document	Dissertation
Author	Kavanagh, Ralph W.
URN	etd-03252004-094852
Persistent URL	http://resolver.caltech.edu/CaltechETD:etd-03252004-094852
Title	Scintillation and magnetic spectrometer studies of nuclear reactions
Degree	PhD
Option	Physics
Advisory Committee	Advisor Name Title C.C. Lauritsen Committee Chair
Keywords	none
Date of Defense	1956-01-01
Availability	unrestricted
Abstract NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. 1. The reaction [...] has been examined with a scintillation spectrometer and with a magnetic-lens spectrometer for proton energies from 670 to 1220 kev. The beta and gamma spectra and gamma-gamma coincidences are used with the shell model to assign spins to the low-lying states of Al26; the positron-emitter is found to be an isomeric state at 219 kev excitation. 2. Gamma and alpha emission from the lowest T = 1 state in C12 at 15.1 Mev are compared, and an upper limit of 0.1 kev is inferred for the width of the state, using results from deuteron bombardment of boron targets. The cross section for production of the gamma ray is given for deuteron energies from 1.633 Mev (threshold) to 3.25 Mev. Using the [...] reaction, a 1/3% branching of the B12 beta decay to the 4.43-Mev state of C12 has been found by beta-gamma coincidences, indicating J = 1+ for the lowest T = 1 triad.
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