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Publikācija: Photoelectron Emission from PbS Nanodots for Dosimetry of Ionizing Radiation

Publication Type Full-text conference paper published in other conference proceedings
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Photoelectron Emission from PbS Nanodots for Dosimetry of Ionizing Radiation
Field of research 1. Natural sciences
Sub-field of research 1.3 Physical sciences
Authors Jurijs Dehtjars
Pavels Kovalovs
Diāna Krumpāne
Renata Reisfeld
Alisa Resetnikova
Marina Romanova
Tsiala Saraidarov
Indra Surkova
Keywords PbS nanodots, electron radiation, dosimetry, photoelectron emission
Abstract PbS nanodots in ZrO2 film matrix (ZrO2:PbS films) were studied for nanodosimetry of electron radiation. The films were irradiated with 9 MeV electrons with doses 0-10 Gy using medical linear accelerator. The dosimetric response was detected by comparing photoelectron emission (PE) spectra from ZrO2:PbS films before and after irradiation. It was found that electron radiation decreased intensity of PE current. Maximums at photon energies 5.65 and 5.75 eV were observed on the derivatives of the PE spectra. Amplitude of these maximums also decreased after the irradiation. Linear correlation was found between the relative decrease of the intensity of these maximums and dose of electron radiation. Changes in PE spectra from ZrO2:PbS films under influence of electron radiation suggest that the films may be considered to be effective material for electron radiation dosimetry. Annealing of ZrO2:PbS films in vacuum shows possibility to use the films repeatedly as the dosimeters.
Reference Dehtjars, J., Kovalovs, P., Krumpāne, D., Reisfeld, R., Resetnikova, A., Romanova, M., Saraidarov, T., Surkova, I. Photoelectron Emission from PbS Nanodots for Dosimetry of Ionizing Radiation. In: ICBBM 2013: Proceedings of the 9th Baltic-Bulgarian Conference on Bionics and Prosthetics, Biomechanics and Mechanics, Mechatronics and Robotics, Latvia, Riga, 17-21 June, 2013. Riga: ICBBM Conference Committee, 2013, pp.207-210. ISBN 978-9934-8409-0-6.
ID 16195