Seminar der Abteilung Strahlenschutz und Sicherheit (ASI)

The Seminar series of the PSI Department of Radiation Safety and Security (Abteilung Strahlenschutz und Sicherheit, ASI) introduces new results and developments in radiation protection, dosimetry, radioanalytics and similar topics. For more information and registration, please contact Claudia Nydegger.

25.03.2021

10:00-11:00 Uhr, Zoom Link (via Outlook invitation)

Neutron dosimetry using fluorescent nuclear track detectors: can it replace existing technologies?

Alberto Stabilini, Abteilung Strahlenschutz und Sicherheit, PSI

Abstract: The assessment on neutron doses remains one of the most challenging problems in personal dosimetry due to the physical mechanisms through which neutrons deposit energy in matter and the strong energy-dependent fluence to dose conversion factors. Poly allyl diglycol carbonate detectors (PADC) are still one of most used types of personal dosimeter, but not without limitations, such as the sensitivity to a narrow portion of the neutron spectrum and the need for laborious chemical etching for the evaluation of the dosimeters. Fluorescent Nuclear Track Detectors (FNTD), a relatively recent radiation detection technology, has shown the ability to overcome some of the limitations affecting the other neutron dosimeters, potentially improving the dose assessment.

The interest in the new FNTD technology raised the practical question, which motivated this PhD project: can the FNTD technology replace the PADC technology? To answer this question, we set our objectives of the project to: (a) compare the current FNTD performance in fast neutron dosimetry with the one from PADC detectors, (b) improve the current methodology adopted in the FNTD evaluation process, (c) develop and demonstrate new evaluation approaches to enhance the dose assessment accuracy based on the unique characteristics of the FNTD material.

The talk will outline the principles of the aforementioned detectors, offer an overview of the work accomplished on this project and draw some considerations based on the status of the FNTD technology development and on the outcome of the studies performed.

05.05.2021

10:30-11:30 Uhr, PSI Bildungszentrum EG6

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02.06.2021

10:30-11:30 Uhr, PSI Bildungszentrum EG6

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07.07.2021

10:30-11:30 Uhr, PSI Bildungszentrum EG6

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04.08.2021

10:30-11:30 Uhr, PSI Bildungszentrum EG6

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01.09.2021

10:30-11:30 Uhr, PSI Bildungszentrum EG6

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06.10.2021

10:30-11:30 Uhr, PSI Bildungszentrum EG6

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03.11.2021

10:30-11:30 Uhr, PSI Bildungszentrum EG6

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01.12.2021

10:30-11:30 Uhr, PSI Bildungszentrum EG6

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