Previously we characterized radiophotoluminescent (RPL) detectors for measuring both fast and thermal neutrons for personal monitoring. The linear response and angular dependence, which satisfies the ISO 21909 standard makes their application possible in neutron dosimetry. The polymer CR-39 track detectors remain one of the most used dosimeters where neutron radiations are to be measured, but the visualization process is time consuming. The difference between results obtained by RPL and CR-39 has been discussed mainly for fast neutrons. The present study has also looked at thermal neutron dosimetry, where we found few results in the literature for CR-39. Our measurements demonstrate that RPL detectors can be advantageously incorporated into a dosimeter to measure thermal neutrons.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9105596 | PMC |
http://dx.doi.org/10.3390/polym14091801 | DOI Listing |
Sci Rep
January 2025
Radiation Biophysics and Radiobiology Laboratory, Physics Department, University of Pavia, Pavia, Italy.
We present new developments for an ab-initio model of the neutron relative biological effectiveness (RBE) in inducing specific classes of DNA damage. RBE is evaluated as a function of the incident neutron energy and of the depth inside a human-sized reference spherical phantom. The adopted mechanistic approach traces neutron RBE back to its origin, i.
View Article and Find Full Text PDFAppl Radiat Isot
December 2024
Instituto de Física Corpuscular (CSIC-Universidad de Valencia), Valencia, Spain.
This paper explores the adaptation and application of i-TED Compton imagers for real-time dosimetry in Boron Neutron Capture Therapy (BNCT). The i-TED array, previously utilized in nuclear astrophysics experiments at CERN, is being optimized for detecting and imaging 478 keV gamma-rays, critical for accurate BNCT dosimetry. Detailed Monte Carlo simulations were used to optimize the i-TED detector configuration and enhance its performance in the challenging radiation environment typical of BNCT.
View Article and Find Full Text PDFAppl Radiat Isot
January 2025
Kyoto University Graduate School of Engineering, Kyoto Daigaku-katsura, Nishikyo-ku, Kyoto, 615-8530, Japan.
We aimed to explore the possibility of realizing a beam shaping assembly (BSA) driven by a 15-kW beam of 33-MeV electrons of an electron linear accelerator (LINAC) when a boronophenylalanine is adopted as a boron carrier. Simulation calculations were performed to design two types of BSAs driven by the small LINAC. The one was an experimental BSA, and the other was a high-performance BSA.
View Article and Find Full Text PDFRadiat Prot Dosimetry
December 2024
Institute for Radiological Sciences, National Institutes for Quantum Science and Technology (NIRS-QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555 Japan.
We investigated the neutron dose estimation for the triage of personnel involved in criticality accidents by conducting 24Na measurements via the whole-body measurement method. For a case study, we examined the September 1999 Japan Nuclear Fuel Conversion Co. criticality accident (internationally known as "the Tokaimura accident").
View Article and Find Full Text PDFPhys Med
January 2025
Dosimetry for Radiation Therapy and Diagnostic Radiology, Physikalisch-Technische Bundesanstalt (PTB), Braunschweig 38116, Germany; Metrology Research Center, National Research Council of Canada, 1200 Montreal Road, Ottawa, ON, K1A0R6, Canada.
Background: FLASH radiotherapy necessitates the development of advanced Quality Assurance methods and detectors for accurate monitoring of the radiation field. This study introduces enhanced time-resolution detection systems and methods used to measure the delivered number of pulses, investigate temporal structure of individual pulses and dose-per-pulse (DPP) based on secondary radiation particles produced in the experimental room.
Methods: A 20 MeV electron beam generated from a linear accelerator (LINAC) was delivered to a water phantom.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!