Photoelectron Emission from PbS Nanodots for Dosimetry of Ionizing Radiation

ICBBM 2013: Proceedings of the 9th Baltic-Bulgarian Conference on Bionics and Prosthetics, Biomechanics and Mechanics, Mechatronics and Robotics 2013
Jurijs Dehtjars, Pavels Kovalovs, Diāna Krumpāne, Renata Reisfeld, Alisa Resetnikova, Marina Romanova, Tsiala Saraidarov, Indra Surkova

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.

Atslēgas vārdi
PbS nanodots, electron radiation, dosimetry, photoelectron emission

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. No: ICBBM 2013: Proceedings of the 9th Baltic-Bulgarian Conference on Bionics and Prosthetics, Biomechanics and Mechanics, Mechatronics and Robotics, Latvija, Riga, 17.-21. jūnijs, 2013. Riga: ICBBM Conference Committee, 2013, 207.-210.lpp. ISBN 978-9934-8409-0-6.

Publikācijas valoda
English (en)