A new radiation dosimeter using a pyroelectric detector | Zendy

de Paula M. H. | Zendy; Carvalho A. A. | Zendy; Mascarenhas S. | Zendy; Zimmerman R. L. | Zendy

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A new radiation dosimeter using a pyroelectric detector

Author(s) -

de Paula M. H.,

Carvalho A. A.,

Mascarenhas S.,

Zimmerman R. L.

Publication year - 1984

Publication title -

medical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.473

H-Index - 180

eISSN - 2473-4209

pISSN - 0094-2405

DOI - 10.1118/1.595587

Subject(s) - dosimeter , radiation , optics , detector , pyroelectricity , dosimetry , particle detector , physics , materials science , photon , kerma , optoelectronics , nuclear medicine , medicine , dielectric , ferroelectricity

We describe a new type of radiation dosimeter, for the diagnostic x‐ray region, using a pyroelectric detector. It consists of a PZT ceramic crystal thick enough to absorb all the incident radiation at 33 keV. This pyroelectric radiation dosimeter (PERD) produces an electrical signal when exposed to a chopped beam of x‐ray photons. The PERD is basically a microcalorimeter. It has the following characteristics: (1) it responds linearly to the energy fluence rate of the radiation; (2) it responds linearly to the radiation intensity for a given radiation spectrum; (3) it has excellent stability; (4) it is simple to construct and inexpensive; and (5) it is rugged.

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