Fiber-type dosimeter with improved illuminator

Patent · Sun Dec 22 23:00:00 EST 1985

OSTI ID:6532024

Fox, R J

A single-piece, molded plastic, Cassigrainian-type condenser arrangement is incorporated in a tubular-shaped personal pocket dosimeter of the type which combines an ionization chamber with an optically-read fiber electrometer to provide improved illumination of the electrometer fiber. The condenser routes incoming light from one end of the dosimeter tubular housing around a central axis charging pin assembly and focuses the light at low angles to the axis so that it falls within the acceptance angle of the electrometer fiber objective lens viewed through an eyepiece lens disposed in the opposite end of the dosimeter. This results in improved fiber illumination and fiber image contrast.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• Assignee: Dept. of Energy
• Patent Number(s): None
• Application Number: ON: DE87007287
• OSTI ID: 6532024
• Country of Publication: United States
• Language: English

Related Subjects

440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CONDENSER IONIZATION CHAMBERS
DOSEMETERS
ELECTRIC MEASURING INSTRUMENTS
ELECTRICAL EQUIPMENT
ELECTROMETERS
EQUIPMENT
ESTERS
FIBERS
ILLUMINANCE
IONIZATION CHAMBERS
LUCITE
MATERIALS
MEASURING INSTRUMENTS
OPTICAL FIBERS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYACRYLATES
POLYMERS
POLYOLEFINS
POLYPROPYLENE
POLYVINYLS
RADIATION DETECTORS
SYNTHETIC MATERIALS