Microdosimetry for a carbon ion beam using track-etched detectors

Vondracek, V. (author)

Šefl, M. (author): Ceske Vysoke Uceni Technicke v Praze,Czech Technical University in Prague

Stepan, V. (author): Centre d'Etudes Nucleaires de Bordeaux Gradignan,Czech Academy of Sciences

Pachnerova Brabcová, Katerina, 1978 (author): Chalmers tekniska högskola,Chalmers University of Technology

(creator_code:org_t)

2015-04-09
2015
English.
In: Radiation Protection Dosimetry. - : Oxford University Press (OUP). - 0144-8420 .- 1742-3406. ; 166:1-4, s. 247-252

Related links:: http://dx.doi.org/10...; show more...; https://doi.org/10.1...; https://research.cha...; show less...

Abstract Subject headings

Track-etched detectors (TED) have been used as linear energy transfer (LET) spectrometers in heavy ion beams for many years. LET spectra and depth-dose distribution of a carbon ion beam were measured behind polymethylmethacrylate degraders at Heavy Ion Medical Accelerator in Chiba, Japan. The measurements were performed along monoenergetic beam with energy 290 MeV u-1 in different positions: (1) at beam extraction area, (2) at beginning, (3) maximum and (4) behind the Bragg peak region (0, 117, 147 and 151 mm of water-equivalent depth, respectively). The LET spectra inside and outside of the primary ion beam have been evaluated. TED record only heavy charged particles with LET above 8-10 keV μm-1, while electrons and ions with lower LET are not detected. The Geant4 simulation toolkit version 4.9.6.P01 has been used to estimate the contribution of non-detected particles to absorbed dose. Presented results demonstrate the applicability of TED for microdosimetry measurements in therapeutic carbon ion beams.

By the author/editor: Ambrozova, I.; Vondracek, V.; Šefl, M.; Stepan, V.; Pachnerova Brabc ...; Ploc, Ondrej, 19 ...; show more...; Incerti, S.; Davidkova, M.; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Subatomic Physic ...

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