Thermoluminescence dosimeter

Patent · Tue Oct 08 04:00:00 EDT 1985

OSTI ID:5889178

Zendle, R

A thermoluminescence dosimeter having a very small rate of decline of sensitivity during subsequent uses after heating is disclosed. The dosimeter includes a detector crystal and a glass enclosure in which the detector crystal is located. The glass enclosure is air tight and is filled with a super dry inert fill gas. The inert fill gas in nonreactive with the detector crystal when the detector crystal is heated to thermoluminescence. The fill gas is selected from the group consisting of air, nitrogen, and argon, suitable admixed with 5 to 25 percent helium. The detector crystal consists essentially of calcium fluoride. The fill gas is preferably contained at a subatmospheric pressure in the glass enclosure.

• Assignee: Dept. of Energy
• Patent Number(s): US 4546259
• OSTI ID: 5889178
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
AIR
ALKALINE EARTH METAL COMPOUNDS
ARGON
ATMOSPHERIC PRESSURE
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
CRYSTALS
DESIGN
DOSEMETERS
ELEMENTS
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
GASES
GLASS
HALIDES
HALOGEN COMPOUNDS
HEATING
HELIUM
INERT ATMOSPHERE
LUMINESCENT DOSEMETERS
MEASURING INSTRUMENTS
NITROGEN
NONMETALS
RARE GASES
SENSITIVITY
THERMOLUMINESCENT DOSEMETERS