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Wattenberg, A. Segler, Samuel Louis 2011-07-26T18:26:35Z 2011-07-26T18:26:35Z 10000-01-01 1970 This thesis consists of two parts. The first part deals with the development and testing of mu1tiwire proportional counters. The second part involves the use of a proportional counter system in an experiment to study the diffraction scattering of protons and positive pions from various complex nuclei. A good precision experiment is made considerably simpler due to the high resolution characteristic of the mu1tiwire proportional counters. To aid in the readability of the thesis, the first and second sections deal only with the proportional counters while the last two sections concern the experimental motivation, arrangement of the apparatus, and the experimental measurements and conclusions. The differential and total cross sections for 1 Gev/c positive pion and proton scattering from complex nuclei were measured at the Argonne ZGS. The targets used were carbon, aluminum, copper, and lead. A combination of scintillation, Cherenkov, and mu1tiwire proportional counters was used to obtain the data. The total cross sections were calculated from the observed transmissions and are in good agreement with existing data. The differential cross sections were obtained from the proportional counter hodoscope and are the first measurements at high energy for pions. Two optical models are described and compared with the results. Radius parameters are obtained for each nucleus from the slope of the differential cross section and fit to an equation of the form R = r o A 1/3 + C where A is the atomic number. The parameter ro is found to be 1.12 +/- .02 fm and c is .61 +/- .08 fm. Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-26T18:26:35Z No. of bitstreams: 1 1970_segler.pdf: 1995199 bytes, checksum: 16bf9309e00e43430b5e1d8428ccb032 (MD5) Made available in DSpace on 2011-07-26T18:26:35Z (GMT). No. of bitstreams: 1 1970_segler.pdf: 1995199 bytes, checksum: 16bf9309e00e43430b5e1d8428ccb032 (MD5) Previous issue date: 1970 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-26T18:26:35Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:33:20-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Thesis U of I Only 6057997 http://hdl.handle.net/2142/25839 en 1970 Samuel Louis Segler diffraction scattering pions protons complex nuclei multiwire proportional counters A measurement of the diffraction scattering of pions and protons from complex nuclei using multiwire proportional counters Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.