2026-09-22T08:03:50Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/42171 2023-07-11 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Miley, George H. Khan, Atanu 2013-02-03T19:18:15Z 2013-02-03T19:18:15Z 2015-02-03T11:00:56Z 2012-12 2013-02-03T19:18:15Z 2012-12 A high-current discharge apparatus with a unique pulsed power supply was successfully constructed to demonstrate intense “anomalous” (exceeding direct charged-particle Bremsstrahlung) x-ray emission in the 1-2 keV range. Anomalous x-ray emission is attributed to ion implantation rather than normal electron Bremsstrahlung x-ray emission. A striking characteristic is that the x-ray energy can be several times the energy of the bombarding ions, suggesting a strong nonlinear mechanism. Such emission was observed during a glow discharge operation in the pressure range 0.1-5.0 torr with a cathode/anode separation of ~4.0 mm. This discharge operates at a voltage of 1-2 kV with a high-pulsed current up to 2 A. The current pulses have “square” time shape with 0.2-2.0 ms duration and a rise time of 0.1 microsecond. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2012-12-12T13:50:34Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Khan_Atanu.pdf: 796215 bytes, checksum: db16e6bba063c7b64531c8e33a323953 (MD5) Made available in DSpace on 2013-02-03T19:18:15Z (GMT). No. of bitstreams: 2 Atanu_Khan.pdf: 796215 bytes, checksum: db16e6bba063c7b64531c8e33a323953 (MD5) license.txt: 4059 bytes, checksum: 56dc3b06015e6b0e1731f265207dbb18 (MD5) Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Seth Robbins (srobbins@illinois.edu) on 2013-02-03T19:19:07Z Item is restricted until 2015-02-03T19:18:53Z Restriction data tranferred 2014-07-01T11:12:03-05:00 Original Data Group with Access UIUC Users [automated] Release Date: 2015-02-03 13:18:53 UTC Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system U of I Only Restriction Lifted for Item 42118 on 2015-02-03T11:00:56Z. http://hdl.handle.net/2142/42171 en Copyright 2012 Atanu Khan Anomalous x-ray emission Glow Discharge Pashchen curve A unique electric discharge-excited solid state x-ray laser text Electrical & Computer Eng 1933 Electrical & Computer Engr 1200 University of Illinois at Urbana-Champaign Thesis M.S. MS:Electr & Computer Eng-UIUC 10KS1200MS