High resolution scintillation crystal

Details High resolution scintillation crystal High resolution scintillation crystal

1984-10-17

1987-01-20

Anderson, Bruce C.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250256, 250363R, 250369, G01V 506, G01T 1208, G01T 1202

Patent

active

046381643

ABSTRACT:
For use in downhole logging tools responsive to gamma rays or x-rays, an improved scintillation device is set forth. In the preferred and illustrated embodiment, a scintillation crystal, typically sodium iodide (thallium activated), is utilized. It is an elongated, regular structure having two ends, and separate photomultiplier tubes (PMT) are attached at the separate ends. The two PMT output signals are supplied to a circuit which forms a signal adjusted or modified to compensate for loss of light energy arising during transmission through the scintillation crystal to the PMT's.

REFERENCES:
patent: 2711482 (1955-06-01), Goodman
patent: 3895232 (1975-07-01), Schneeberger
R. G. Astvatsaturov et al., "A Scintillation Counter 100 cm Long for Measurement of Ionization Losses of Relativistic Particles", Pribory i Tekhnika Eksperimenta, No. 2, (Mar.-Apr. 1975), pp. 62-65.

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