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Holt, R.J. Cadman, Robert Victor 2012-05-31T16:49:47Z 2012-11-26T18:41:44Z 2001 The spin observables Ay, iT11, and Cy,y in proton-deuteron elastic scattering were measured over the angular range 65° < ϴcm < 115° at a proton energy Tlab = 197 MeV. These data were acquired with a polarized proton beam and an internal vector-polarized deuteron gas target at the Indiana University Cyclotron Facility. The target was polarized by spin exchange with optically-pumped potassium; this experiment was the first to use this novel technique for polarizing hydrogen and deuterium. The data have been compared to existing Faddeev calculations using modern two-nucleon potentials which accurately reproduce the available two-nucleon scattering data. The calculations were also performed with the addition of the Tucson-Melbourne three-nucleon potential to identify kinematic regimes where the three-nucleon force makes a significant contribution. One such regime is in the vicinity of the minimum in the differential cross section for nucleon-deuteron elastic scattering at nucleon energies Tlab >~ 100 MeV, which includes the region covered by this experiment. The failure of calculations using only two-nucleon potentials to reproduce the results of this experiment is interpreted as evidence that some type of three-nucleon force is needed to explain the data. Submitted by Elizabeth Kent (eckent2@illinois.edu) on 2012-05-31T16:49:47Z No. of bitstreams: 1 2001_cadman.pdf: 3511305 bytes, checksum: 910863cc68530b882cca43ef13b157fd (MD5) Made available in DSpace on 2012-05-31T16:49:47Z (GMT). No. of bitstreams: 1 2001_cadman.pdf: 3511305 bytes, checksum: 910863cc68530b882cca43ef13b157fd (MD5) Previous issue date: 2001 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Elizabeth Kent (eckent2@illinois.edu) on 2012-05-31T16:49:47Z Item is restricted indefinitely. Item reinstated by Sarah Shreeves (sshreeve@illinois.edu) on 2012-11-26T18:41:43Z Item was in collections: University of Illinois Dissertations and Theses (ID: 204) Dissertations and Theses - Physics (ID: 445) No. of bitstreams: 1 2001_cadman.pdf: 3511305 bytes, checksum: 910863cc68530b882cca43ef13b157fd (MD5) Item released from any restrictions by Sarah Shreeves (sshreeve@illinois.edu) on 2012-11-26T18:41:44Z 4423490 http://hdl.handle.net/2142/31308 en ©2001 Robert Victor Cadman proton-deuteron elastic scattering Proton-Deuteron Elastic Scattering and Three-Nucleon Forces Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.