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Brown, Bruce Stilwell 2012-02-29T21:02:26Z 2012-02-29T21:02:26Z 10000-01-01 1972 Anomalous X-ray transmission measurements were made at.4,2 K on nearly perfect crystals before and after irradiation at 14 Kwith 3 MeV electrons, Simultaneous resistance measurements were taken on high purity copper wires, The measured intensity changes for (111), (222), (333), (220), (200), and (400) reflecting planes were investigated at intervals during the irradiation, Annealing studies at 22 K, 37 K, 78 K, and 295 K show X-ray intensity recoveries similar to resistance recoveries. Resistance increases show a linear dependence with electron fluence while transmitted X-ray intensity decreases show a greater than linear dependence. Resistance changes with dose were comparable with previous data, X-ray intensity decreases appear to be greater than predicted for the estimated concentration of point defects, A second irradiation of the transmission specimen after a long room temperature anneal led to decreases in transmitted intensity which were about twice the changes seen after a similar electron fluence in the first irradiation. Submitted by Megan O'Donnell (mnodonn2@illinois.edu) on 2012-02-29T21:02:26Z No. of bitstreams: 1 1972_brown.pdf: 1824056 bytes, checksum: a181f1a9de4e062d7ce227ed6e76429c (MD5) Made available in DSpace on 2012-02-29T21:02:26Z (GMT). No. of bitstreams: 1 1972_brown.pdf: 1824056 bytes, checksum: a181f1a9de4e062d7ce227ed6e76429c (MD5) Previous issue date: 1972 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Megan O'Donnell (mnodonn2@illinois.edu) on 2012-02-29T21:02:26Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:10:33-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: dissertation/thesis dissertation/thesis U of I Only 2935692 http://hdl.handle.net/2142/29949 en © Bruce Stilwell Brown Copper copper crystals anomalous x-ray transmission Anomalous X-ray transmission changes in copper crystals on electron irradiation at 14 K Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.