Thermoluminescent detector for mixed gamma and fast neutron radiations
AssigneeNational Defence of Canada
InventorsRobert A. Facey, Raynald A. Gravelle, Harry Sheffer
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Abstract
It has not previously been known to measure, by means of thermoluminescent detectors, both gamma and fast neutron radiation at the same time. The present invention performs such measurements on an equal basis to produce a summed dose reading. The present invention broadly comprises the use of a thermoluminescent phosphor in hydrogenous matrix and the measurement of thermoluminescence due to electron fluence from the matrix into the phosphor for gamma ray dose and recoil proton fluence into the phosphor for fast neutron dose. The invention further embraces the manufacture of a detector and a novel die for use therein.
Claims5
A hot-pressing die for processng discs of chemical compounds, said die comprising:
- i. a barrel closed at one end and open at the other end,
- ii. a piston insert is slidable within said barrel,
- iii. a first inset disposed within said barrel and abutting the closed end thereof,
- iv. a second insert disposed and slidable within said barrel and spaced from said first insert to provide a space for a quantity of the said chemical compound, the said second insert being pressed into enegagement with said compound by the said piston exertng a force on the second insert, the coefficient of linear expansion of the first and second inserts being greater than that of the barrel whereby the lateral forces and the sealing between the inserts and the barrel is enhanced at elevated temperatures.
Dependencies are inferred from the claim text.