Radon daughter dosimeter

Patent · Tue Oct 25 04:00:00 EDT 1977

OSTI ID:5395586

Durkin, J

This patent describes a portable radon daughter dosimeter unit used to measure radon gas alpha daughters in ambient air. 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 in 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 displays the result in terms of working level-hours.

• Assignee: EDB-80-072515
• Patent Number(s): US 4055762
• OSTI ID: 5395586
• Country of Publication: United States
• Language: English

Related Subjects

440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALPHA DECAY
ALPHA DETECTION
ALPHA PARTICLES
BISMUTH ISOTOPES
CHARGED PARTICLE DETECTION
CHARGED PARTICLES
DECAY
DETECTION
DOCUMENT TYPES
DOSEMETERS
ELEMENTS
MEASURING INSTRUMENTS
NONMETALS
PATENTS
POLONIUM ISOTOPES
RADIATION DETECTION
RADON
RARE GASES
READOUT SYSTEMS