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dc.contributor.authorLaan, Flavio Tadeu van derpt_BR
dc.contributor.authorBorges, Volneipt_BR
dc.contributor.authorZabadal, Jorge Rodolfo Silvapt_BR
dc.date.accessioned2015-11-18T02:38:40Zpt_BR
dc.date.issued2015pt_BR
dc.identifier.issn2319-0612pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/129866pt_BR
dc.description.abstractNowadays the devices employed to evaluate individual radiation exposition are based on dosimetric films and ter-moluminescent crystals, whose measurements must be processed in specific transductors. Hence, these devices carry out indirect measurements. Although a new generation of detectors based on semiconductors which are employed in EPD’s (Eletronic Personal Dosimeters) being yet available, it high producing costs and large dimensions prevents the application in personal dosimetry. Recent research works reports the development of new detection devices based on photovoltaic PIN diodes, which were succesfully employed for detecting and monitoring exposition to X rays. In this work, we step forward by coupling a 2mm antracene scintillator NE1, which converts the high energy radiation in visible light, generating a Strong signal which allows dispensing the use of photomultipliers. A low gain high performance amplifier and a digital acquisition device are employed to measure instantaneous and cum-mulative dosis for energies ranging from X rays to Gamma radiation up to 2 MeV. One of the most important fea-tures of the PIN diode relies in the fact that it can be employed as a detector for ionization radiation, since it requires a small energy amount for releasing electrons. Since the photodiode does not amplify the corresponding photon current, it must be coupled to a low gain amplifier. Therefore, the new sensor works as a scintillator coupled with a photodiode PIN. Preliminary experiments are being performed with this sensor, showing good results for a wide range of energy spectrum.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoporpt_BR
dc.relation.ispartofBrazilian journal of radiation sciences [recurso eletrônico]. Recife, PE. Vol. 3, n. 2 (2015), p. 1-8pt_BR
dc.rightsOpen Accessen
dc.subjectNuclear Instrumentation Detectors X and Gamaen
dc.subjectRadiação gamapt_BR
dc.subjectDosimetriapt_BR
dc.subjectPhotovoltaic sensoren
dc.subjectPersonal dosimetryen
dc.subjectRaios Xpt_BR
dc.subjectDetectores de radiaçãopt_BR
dc.titleDetector cintilador semicondutor para radiação gamapt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000974811pt_BR
dc.type.originNacionalpt_BR


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