Thermoluminescence dosimeter

Patent · Tue Jan 01 04:00:00 EST 1985

OSTI ID:865624

Zendle, Robert ^[1]

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1. Schenectady, NY

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 is 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.

• Research Organization: Knolls Atomic Power Laboratory (KAPL), Niskayuna, NY
• DOE Contract Number: AC12-76SN00052
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4546259
• OSTI ID: 865624
• Country of Publication: United States
• Language: English

Related Subjects

/250/
25
admixed
air
argon
atmospheric pressure
calcium
calcium fluoride
consisting
consists
consists essentially
contained
crystal
decline
detector
detector crystal
disclosed
dosimeter
dry
enclosure
essentially
fill
fill gas
filled
fluoride
gas
glass
heated
heating
helium
inert
located
nitrogen
nonreactive
percent
preferably
preferably contain
pressure
rate
selected
sensitivity
subatmospheric
subatmospheric pressure
subsequent
suitable
super
thermoluminescence
thermoluminescence dosimeter
tight