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backscattering ion channeling lattice site incident beam orientations A backscattering ion channeling study of the lattice site location of the constituents of two systems Dissertation / Thesis text Eades, J.A. Kahn, Alan 2011-06-20T15:03:21Z 2011-06-20T15:03:21Z 10000-01-01 1987 Backscattering ion channeling measurements were performed to determine the lattice site location of the constituents of two systems. For (GaSb) 1_x(Ge2)x spectra were obtained at a set of incident beam orientations along an angular scan through the [110] direction and nearly parallel to the [110) plane. The asymmetry in the backseattering yield from the antimony in the near surface region is used to observe a structural phase transition in the alloy from the zinc blende structure to a diamond structure. In the second system the extent of antimony segregation to the [111] silicon - silicon dioxide interface was first determined. Channeling scans were made through the [111], [110] and [121] directions of thin silicon crystals with a silicon dioxide layer at the rear surface. By comparing the form of the channeling yield scan for antimony that had been segregated to the interface with the signal from the silicon crystal itself it was possible to deduce the projected position of the antimony in each direction. The antimony was found to occupy a silicon substitutional site. For both of these systems computer simulations of the channeling process were carried out in order to internet the data quantitatively. Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-20T15:03:21Z No. of bitstreams: 1 1987_kahn.pdf: 2503439 bytes, checksum: a51e2fbf2ab34ec6be9e65602c5ab27f (MD5) Made available in DSpace on 2011-06-20T15:03:21Z (GMT). No. of bitstreams: 1 1987_kahn.pdf: 2503439 bytes, checksum: a51e2fbf2ab34ec6be9e65602c5ab27f (MD5) Previous issue date: 1987 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-06-20T15:03:21Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:15:20-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Thesis U of I Only 1856934 http://hdl.handle.net/2142/25453 en 1987 Alan Kahn Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.