Search for Ionization-Induced Modulation of Light Polarization for a New Direction to Improve Time Resolution of PET
In this work, we study whether ionizing radiation can induce a small component of non-polarized light in a crosspolarizer setup, where usually no light transmission would occur. Such ionization-induced modulation of polarization occurs at a sub-picosecond time scale, which could be exploited for fast timing applications, such as time of flight in positron emission tomography. We demonstrate the feasibility of this approach using ionization produced from a laser diode in high Z, high-density crystals. Results indicate that the signal strength, quantified by induced cross-polarized light due to ionization from 20 MHz UV pulses in BSO is 10x higher than that in CdTe.
M. Esmaeelpour et al., "Search for Ionization-Induced Modulation of Light Polarization for a New Direction to Improve Time Resolution of PET," Proceedings of the 2019 IEEE Nuclear Science Symposium and Medical Imaging Conference (2019, Manchester, UK), Institute of Electrical and Electronics Engineers (IEEE), Nov 2019.
The definitive version is available at https://doi.org/10.1109/NSS/MIC42101.2019.9060063
2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019 (2019: Oct. 26-Nov. 2, Manchester, UK)
Electrical and Computer Engineering
Keywords and Phrases
Coincidence Time Resolution; Positron Emission Tomography; Scintillation Detectors; Semiconductor Detectors
International Standard Book Number (ISBN)
Article - Conference proceedings
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01 Nov 2019