Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007. / Source: Dissertation Abstracts International, Volume: 68-07, Section: B, page: 4796. Advisers: Barclay G. Jones; Ty A. Newell. Includes bibliographical references (leaves 148-153) Available on microfilm from Pro Quest Information and Learning.

Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007. / Source: Dissertation Abstracts International, Volume: 68-07, Section: B, page: 4796. Adviser: David N. Ruzic. Includes bibliographical references. Available on microfilm from Pro Quest Information and Learning.

Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2008. / Source: Dissertation Abstracts International, Volume: 69-05, Section: B, page: 3244. Adviser: Rizwan-uddin. Includes bibliographical references (leaves 150-157) Available on microfilm from Pro Quest Information and Learning.

Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006. / Source: Dissertation Abstracts International, Volume: 67-07, Section: B, page: 4080. Adviser: Rizwan-uddin. Includes bibliographical references (leaves 232-236) Available on microfilm from Pro Quest Information and Learning.

The present work contains the discussion on the set up of a short magnetic lens electron spectrometer, and the results of an investigation of the beta decay spectra of Cs137 and Tm170. A short magnetic lens electron spectrometer of about 21cm focal length was set up and used during the course of this investigation. A Cs137 source was mainly used as a calibration source since decay spectrum is well understood. The magnetic field was varied in the range such that the electrons of 400 to 5200 gauss cm in momentum can be focused. The spectrometer resolution of 2.16% at the K peak of Cs 137 (624.2 KeV) and the counter resolution of 31.3% is attained. Beta decay spectra and conversion electrons of Cs137 and Tm 170 were studied. Fermi-Kurie plots of Cs137 and Tm 170 are presented.

The spectrometer was originally designed and built by the AECL, Nuclear Physics Branch, in an experiment to determine the neutron lifetime (1). It was then acquired by the University of Ottawa in order to do experiments in the Nuclear Physics Lab, among which the determination of the exact shape of the continuous beta spectrum of P32. The present work describes the spectrometer and associated apparatus, the tests which are done after reassembling and the final calibration with a Cs137 and a Tm170 source. Conclusions are drawn as to the performance of the instrument and to the purposes for which it could be used.

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