New radiation dosimeter using a pyroelectric detector

Journal Article · Thu Nov 01 00:00:00 EST 1984 · Med. Phys.; (United States)

DOI:https://doi.org/10.1118/1.595587· OSTI ID:6218421

de Paula, M H; Carvalho, A A; Mascarenhas, S; Zimmerman, R L

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.

• Research Organization: Instituto de Fisica e Quimica, Univ. of S. Paulo, C. P. 369 S. Carlos, S. P. Brazil, CEP 13560
• OSTI ID: 6218421
• Journal Information: Med. Phys.; (United States), Vol. 11:6
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
61 RADIATION PROTECTION AND DOSIMETRY
DOSEMETERS
SENSITIVITY
STABILITY
X-RAY DOSIMETRY
RADIATION DETECTORS
RADIATION PROTECTION
X-RAY RADIOGRAPHY
DOSIMETRY
INDUSTRIAL RADIOGRAPHY
MEASURING INSTRUMENTS
440102* - Radiation Instrumentation- Radiation Dosemeters
655003 - Medical Physics- Dosimetry