Radon daughter dosimeter

Patent · Tue Oct 25 04:00:00 EDT 1977

OSTI ID:6512612

Durkin, J

A portable radon daughter dosimeter unit used to measure Radon gas alpha daughters in ambient air is described. These measurements can then be related to preselected preestablished standards contained in a remote central readout unit. The dosimeter unit is adapted to be worn by an operator in areas having alpha particle radiation such as uranium mines. Within the dosimeter is a detector head housing having a filter head and a solid state surface barrier radiation detector; an air pump to get air to the detector head; a self contained portable power supply for the unit; and electronic circuitry to process detected charged electrons from the detector head to convert and count their pulses representatives of two alpha radon emitter daughters. These counted pulses are in binary form and are sent to a readout unit where a numerical readout diplays the result in terms of working level-hours.

• Assignee: Secretary of the Interior
• Patent Number(s): US 4055762
• OSTI ID: 6512612
• Country of Publication: United States
• Language: English

Related Subjects

050300 -- Nuclear Fuels-- Mining-- (-1987)
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALPHA DECAY RADIOISOTOPES
ALPHA PARTICLES
CHARGED PARTICLES
DAYS LIVING RADIOISOTOPES
DESIGN
DOSEMETERS
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EMANOMETERS
EVEN-EVEN NUCLEI
GE SEMICONDUCTOR DETECTORS
HEAVY NUCLEI
ISOTOPES
MEASURING INSTRUMENTS
MINES
NUCLEI
POWER SUPPLIES
RADIATION DETECTORS
RADIOISOTOPES
RADON 222
RADON ISOTOPES
READOUT SYSTEMS
SEMICONDUCTOR DETECTORS
SI SEMICONDUCTOR DETECTORS
STANDARDS
URANIUM MINES