Measurements of high energy beta spectra
Cramer, John Gleason, Jr
Doctor of Philosophy
The research which will be described is centered around the development of a beta scintillation spectrometer capable of quantitative measurements of beta spectra in the energy region from about 2 to about 17 MeV. Part II will deal with the design, operation, and properties of this scintillation spectrometer and with examples of measured spectra. It will be shown that this device gives results which compare well with data from magnetic analysis. It will also be shown that the distortion effects which are present in measurements using this device are either negligible or small and correctable. Part III deals with a measurement of the beta spectra of N12 and B12 which are respectively positron and electron transitions to C12. The N12 decay is the most energetic beta decay known, with an end-point energy in excess of 16 MeV, and the B 12 decay is also quite energetic. These spectra were measured with the beta scintillation spectrometer. Section IV describes a measurement of the half life and end-point of the mirror transition Sc41 (beta+)Ca 41 which was performed using the beta scintillation spectrometer.
Particle physics; Elementary particles; High energy physics