MCz diode response as a high-dose gamma radiation dosimeter

Dose-rate dependence of Epitaxial diodes response for gamma dosimetry

“…This scenario has changed with the development of rad-hard diodes based on magnetic Czockralski (MCz), standard and oxygen-enriched float zone (FZ) silicon substrates [3] which will be used in the tracking system of future colliding beam experiments [4]. The dosimetric characteristics of some rad-hard devices have been investigated in our group in both radiation processing and clinical electron beam dosimetry [5,6]. Despite of the higher radiation tolerance of these devices, our results have still shown a sensitivity decay with the dose, attributed to the reduction of the minority carrier lifetime/diffusion length as a function of the dose.…”

A comparison between Rad-Hard Standard Float Zone (FZ) and Magnetic Czochralski (MCz) Silicon Diodes in Radiotherapy Electron Beams Dosimetry

“…In the last years, the development of radiation tolerant silicon detectors for High Energy Physics experiments has overcome this drawback. The dosimetric characteristics of two types of these rad-hard devices, produced by the Standard Float Zone (FZ) and the Magnetic Czochralski (MCz) techniques, have been investigated in our group in both radiation processing [4] and clinical electron beam dosimetry. In this work we present the preliminary results obtained with rad-hard Standard Float Zone (FZ) and Magnetic Czochralski (MCz) silicon diodes as on-line clinical electron beams dosimeter.…”

Dosimetria de altas doses de raios gama e elétrons com diodos de Si resistentes a danos de radiação

“…Um dos mais importantes resultados, obtidos por estes estudos, mostrou que a presença de oxigênio, em concentrações elevadas (10 17 cm -3 ), na estrutura dos detectores de Si, aumenta a tolerância aos danos de radiação responsáveis pelas alterações da tensão de depleção total destes dispositivos [18][19][20] [11,12,[19][20][21][22][23].…”