SU-E-T-163: Characterization of the Response of Active Detectors and Passive Dosemeters Used for Dose Measurement in Small Photon Beams

2011 ◽  
Vol 38 (6Part12) ◽  
pp. 3523-3523 ◽  
Author(s):  
S Derreumaux ◽  
C Bassinet ◽  
C Huet ◽  
M Chea ◽  
G Boisserie ◽  
...  
Keyword(s):  
Dose Measurement ◽  
Photon Beams

Dose measurement at high atomic number interfaces in megavoltage photon beams using TLDs

1992 ◽  
Vol 19 (2) ◽  
pp. 355-356 ◽  
Author(s):  
A. S. Pradhan ◽  
A. K. Gopalakrishnan ◽  
P. S. Iyer
Keyword(s):  
Atomic Number ◽  
Dose Measurement ◽  
Photon Beams ◽  
High Atomic Number

Characterization of tannin-added Rhizophora spp. particleboards as phantom materials for photon beams

2017 ◽  
Vol 95 ◽  
pp. 467-474 ◽  
Author(s):  
Mohd Fahmi Mohd Yusof ◽  
Rokiah Hashim ◽  
Abd Aziz Tajuddin ◽  
Sabar Bauk ◽  
Othman Sulaiman
Keyword(s):  
Photon Beams

scholarly journals Characterization of Crystalline CsPbBr3 Perovksite Dosimeters for Clinical Radiotherapy

2021 ◽  
Vol 9 ◽  
Author(s):  
Mara Bruzzi ◽  
Cinzia Talamonti
Keyword(s):  
High Energy Physics ◽  
Absorbed Dose ◽  
High Energy ◽  
Current Response ◽  
Photon Beams ◽  
Linear Dimensions ◽  
Decay Times ◽  
Clinical Radiotherapy ◽  
A Charge

Lead halide perovskite CsPbBr3 is a wide-gap semiconductor material potentially very attractive for next generations of real-time monitors and particle detectors in high-energy physics. Here, we present the first characterization of crystalline CsPbBr3 point dosimeters with submillimeter size, under 6 MV X-photon beams used in clinical radiotherapy. Current response of the devices proved to be promising in terms of fast rise and decay times, of the same order of the X-ray beam onset and offset ones; absence of polarization effects; reproducibility to repeated irradiations; and linearity of the collected charge as a function of the absorbed dose. Comparing the measured sensitivity with the theoretical one, a charge collection distance of about 100 μm has been evaluated, of the same order of the linear dimensions of crystallites within the samples, suggesting that recombination centers are mainly placed at grain boundaries. A much higher sensitivity per unit area measured with crystalline CsPbBr3 as compared with drop-casted ones can be explained in terms of a less disordered crystalline structure. This work opens the way to CsPbBr3 point dosimeters, with linear dimensions meeting the strict spatial resolution constraints for bidimensional dose mapping required in clinical radiotherapy.

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