Tim Oldham
Dr. Oldham received his B. S. (Physics) from Michigan State University in 1969, his M. S. (Physics) from American University in 1975, and his Ph. D. (Physics) from Catholic University of America in 1982. He came to Harry Diamond Laboratories (now part of the U. S. Army Research Laboratory) as a summer student in 1967, and worked on a variety of radiation effects physics problems in electronic materials and devices, including the radiation response of metal-oxide-semiconductor (MOS) devices and materials. He conducted many of the early studies on radiation-induced charge recombination in oxides. Dr. Oldham was also the experimentalist on the team that produced what is usually called the McLean-Oldham model for charge collection for an ion passing through a semiconductor device. He was also the technical leader of the team, which developed the model for radiation-induced trapped charge, and which was presented in his latest book (Ionizing Radiation Effects in MOS Oxides, World Scientific Publishing, 1999). This model explains complex radiation effects observations, along with (at least in part) electron trapping, neutral centers, and a variety of other reliability effects in terms of a single defect complex.
At different times, Dr. Oldham has served as an advisor to several other agencies on radiation effects and reliability physics in semiconductor electronics, including the Defense Nuclear Agency (now the Defense Threat Reduction Agency), the U. S. Army Space and Missile Defense Command, DARPA, and NSA. Recently, he joined the Radiation Effects and Analysis Group at the NASA Goddard Space Flight Center, as a contractor for QSS Group, Inc. He has authored or co-authored more than 30 papers in peer reviewed journals and more than 25 other reports. He has served as Technical Program Chairman of the IEEE Nuclear and Space Radiation Effects Conference (NSREC) in 1990, and as NSREC General Conference Chairman in 1994. He has also served as Guest Editor of the IEEE Transactions on Nuclear Science for the NSREC conference issue for 1997-1999. He was also the Awards Chairman for the 2001 NSREC. He has been elected a Fellow of the IEEE.
Dr. Oldham is married with four daughters. He is also a member of Toastmasters International (achieving the rank of Distinguished Toastmaster), a life member of the U.S. Chess Federation (B rating), and an enthusiastic long distance runner (veteran of 28 marathons, including eight in Boston and four in New York).
Tim's e-mail address is
Timothy.R.Oldham.1@gsfc.nasa.gov.
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Curator: Martha O'Bryan
Last Revised January 7, 2004
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Kenneth A. LaBel, Group Leader
