Thin Silicon Microdosimeter Utilizing 3D MEMS Technology: Charge Collection Study and Its Application in Mixed Radiation Fields L. T. Tran, L. Chartier, D. Bolst, A. Pogossov, M. Petasecca, S. Guatelli, M. Lerch, A. Rosenfeld, University of Wollongong; M. Povoli, A. Summanwar, A. Kok, SINTEF; D. Prokopovich, M. Reinhard, ANSTO; N. Matsufuji, National Institutes for Quantum and Radiological Science and Technology
This paper presents two significant structures of 3D mushroom microdosimeters, their electrical and charge collection properties and preliminary results of dose equivalent obtained with these devices in a mixed radiation fields.
I-2 11:35 AM
Total-ionizing-dose effects on a graphene oxide X-ray detector N.-Q. Deng, Y. Yang, T.-L. Ren, Tsinghua University; W.-J. Liao, E. X. Zhang, D. M. Fleetwood, Vanderbilt University; H. Tian, University of Southern California
We have evaluated the total-ionizing-dose response of graphene-oxide-based X-ray detectors fabricated via laser scribing. The detectors are quite radiation sensitive, but degrade significantly during use due to charge trapping.
2:45 - 5:10 PM Mardi Gras E-H Ballrooms
POSTER SESSION Chair: Marta Bagatin, DEI - University of Padova
Dose Rate Dependency of a Floating-Gate Based Voltage Reference for Space Dosimetry Applications X. Li, L. Chen, University of Saskatchewan; D. Hiemstra, V. Kirischian, MDA Inc.; N. W. van Vonno, Intersil Inc.
Low and high dose rate Co-60 testing is conducted on voltage references with floating gate technology. The voltage references respond differently to low and high dose rates and could be used as satellite dosimeters.
A Novel Passive Wireless Total Dose Dosimeter A. Mahmud, Y. Gonzalez-Velo, H. J. Barnaby, J. Aberle, S. Moallemi, J. Kitchen, C. Birtcher, K. Hilgers, T. Eller, K. Holbert, Arizona State University; A. Raman, D. E. Thomas, R. Arslanbekov, K. Bhatt, CFDRC
A novel implementation of a passive remote total dose sensing device operating in the range of 4 to 7 GHz is presented. The wireless sensor is based on a capacitively-loaded folded-patch antenna.