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Brown, Frederick C. Carrera, Nicholas John 2011-07-26T20:52:52Z 2011-07-26T20:52:52Z 10000-01-01 1970 The absorption coefficients of silver chloride and silver bromide have been determined from thin film transmission measurements in the range of photon energy from 3.5 to 6.7 electron volts and from 30 to 240 electron volts. An unusual feature of this work is the use of electron synchrotron radiation for measurements in the high energy range. Optical constants have been calculated over the extended energy range, 3.5 to 240 electron volts. Band gaps have been estimated from the ultraviolet energy data and exciton binding energies. Comparison of ultraviolet structure and extreme ultraviolet structure, and measurements taken at different temperatures give evidence that in the high energy region exciton absorption is insignificant compared to absorption due to band-to-band transitions. A discussion of the conduction band structure of silver chloride is also given. Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-26T20:52:52Z No. of bitstreams: 1 1970_carrera.pdf: 2416923 bytes, checksum: 56a3762ef682db697a77398c3c7f9003 (MD5) Made available in DSpace on 2011-07-26T20:52:52Z (GMT). No. of bitstreams: 1 1970_carrera.pdf: 2416923 bytes, checksum: 56a3762ef682db697a77398c3c7f9003 (MD5) Previous issue date: 1970 Restriction data tranferred 2014-07-01T11:32:57-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-26T20:52:52Z Item is restricted indefinitely. Thesis U of I Only 6063024 http://hdl.handle.net/2142/25852 en 1970 Nicholas John Carrera optical absorption silver halides ultraviolet extreme ultraviolet thin film transmission Optical absorption measurements on silver halides in the ultraviolet and extreme ultraviolet energy ranges Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.