- PGS-3 Gamma Scintillation Probe utilizing
a highly gamma sensitive crystal (NaI(Tl)). 1'' diameter x 1'' long
hermetically sealed crystal optically coupled to photomultiplier tube.
Gamma sensitivity is 100 times greater than GM tubes Will also detect
X-rays > 25KeV. (Figure 1)
- PGS-3L Same as the PGS-3 except it has
a 2'' x 2'' crystal. Eight times the sensitivity of the PGS-3. Since
sensitivity of the PGS-3L is in the order of 1,000,000 cpm per mR/hr,
probe should only be used with instruments allowing high count rates,
or having background suppress circuits (PUG-7E) or pulse height selection
circuit (PRS-5 or FS-5T). (Figure 1)
- PGS-3T Low Energy Gamma Scintillation
Probe, 1'' diameter x 1mm NaI(Tl) crystal protected by a 5 mil. aluminum
window, sees X-rays and Gammas > 10KeV and Betas > 100KeV.
- PGS-22 Low Energy Gamma Scintillation
Probe with built in linear and discriminator maximizes sensitivity
to low energy gamma radiation and allows use with gamma spectrometers.
Thin crystal (2'' diameter x 2mm thick) decreases sensitivity to
background. The internal linear preamp is powered by a long life battery
(6 months of normal operation) and may be used with portable instruments,
such as the PUG-7 and with line operated instruments not furnishing
power for preamp. Sees X-rays and Gamma >10KeV.
- PGS-3I This Low Energy Gamma Probe incorporates
a 37mm x 2mm NaI(Tl) crystal and thin (5mil) window for use with T/A's
iodine localizer and monitor as well as other systems requiring sensitivity
to low energy photons, such as those from I-125 as well as sensitivity
to high energy photons, such as I-131 and other isotopes. It is designed
to accept shields and collimators and to couple to charcoal impregnated
cartridges or filters for determining total radioiodine content of
air, both gaseous and particulate. Sees X-rays and Gamma >10KeV.
(Figure 2)
- PGS-3x3 Sensitive Large Crystal Gamma
Scintillation Probe. Over 21 cubic inches of NaI(Tl) makes this probe
very useful for truck, vehicle, exit, and remote monitoring. Rapidly
detects minute changes in very low ambient radiation fields. Includes
3'' x 3'' diameter NaI(Tl) crystal and optically coupled photomultiplier
tube. The highly efficient crystal with large active volume provides
background rate of approximately 60,000 cpm. Therefore, probe should
be used only with instruments allowing high count rates, or having
background suppress circuit (as PUG-7E) or pulse height selection
circuit, such as the PRS-5 and the FS-5t.
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Figure 1
Figure 2
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