A new pulsed pyroelectric radiation dosimeter.

Vista sencilla de ítem
dc.contributorUNESP-Campus de Ilha Solteira; EMBRAPA-CNPDIA.
dc.creatorCARVALHO, A. A.
dc.creatorMASCARENHAS, S.
dc.creatorPAULA, M. H. de
dc.date2025-04-11T15:47:48Z
dc.date2025-04-11T15:47:48Z
dc.date1999-12-22
dc.date1988
dc.date.accessioned2026-07-07T04:29:45Z
dc.descriptionWe describe a new type of radiation dosimeter for the diagnostic X-ray region using a pyroelectric detector. The pulsed pyroelectric radiation dosimeter (PPERD) is a system constituted by a X-ray beam commutator, a pyroelectric chamber, a pre-amplifier and an electronic peak detector. The pyroelectric chamber consists basically of a lead zirconium titanate (PZT) ceramic (17mm x 17mm and 3mm thick) on a nylon support. The chamber is evacuated to about 1mm Hg. The thickness of the detector is such that it absorbed more than 99% of the X-ray beam used in these studies. The pyroelectric element itself absorbs a X-ray pulse and provides a voltage proportional to the energy absorbed. The PPERD has the following characteristics for diagnostic X-ray beams: 1) it responds linearly to the radiation intensity for a given radiation spectrum; 2) it responds linearly to the radiatin energy fluence rate; 3) the pyroelectric chamber is simple to construct, inexpensive and rugged; 4) the lower detection limit of energy fluence rate range and of exposure rate range are respectively 20mW/m2 and 9,0.10E-6C.KgE-1 sE-1 (35mR/s).
dc.formatp.II-25.
dc.identifierIn: INTERNATIONAL SYMPOSIUM ON RADIATION PHYSICS, 4., Oct. 1988, São Paulo, SP. Book of abstracts... São Paulo: [s.n.], 1988.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/26547
dc.identifier.urihttp://hdl.handle.net/123456789/463147
dc.languageeng
dc.rightsopenAccess
dc.subjectDosimeter
dc.subjectRadiation
dc.subjectPyroelectric
dc.subjectPulsed
dc.titleA new pulsed pyroelectric radiation dosimeter.
dc.typeResumo em anais e proceedings

Archivos

Colecciones

Embrapa Instrumentación (CNPDIA)