Comparative evaluation of the performance of thin diodes used as on-line dosimeters in radiation processing applications

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2021
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Brazilian Journal of Radiation Sciences
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In this work, we report a comparison between the performance of two samples of commercial PIN photodiodes (SFH206K from OsramĀ® and S2506-04 from HamamatsuĀ®) mainly addressing the variation of their current sensitivities with accumulated dose ranging from 0-15 kGy. All the results so far obtained have revealed that the radiation induced currents are linearly dependent on dose rates from 3.65 to 55.64 Gy/h. The current sensitivity of both unirradiated diodes (0.178 nA.h/Gy.mm3) slightly decreases with accumulated dose, namely 0.32%/kGy (SFH206K) and 1.4%/kGy (S2506-04). Although the SFH206K device compares favorably with the S2506-04, both diodes can be considered as a low budge alternative, good enough for on-line dosimetry applications in the field of radiation processing.

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GONCALVES, J.A.C.; BUENO, C.C.; MANGIAROTTI, A. Comparative evaluation of the performance of thin diodes used as on-line dosimeters in radiation processing applications. Brazilian Journal of Radiation Sciences, v. 9, n. 1A, p. 1-8, 2021. DOI: 10.15392/bjrs.v9i1A.1327. DisponĆ­vel em: http://repositorio.ipen.br/handle/123456789/32093. Acesso em: 29 Mar 2024.
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