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STATE OF ART INSTRUMENTATION FROM AN INNOVATIVE COMPANY

ACCESSORIES FOR GAMMA RAY SPECTROMETER system

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Technical Data

(a) SCINTILLATION DETECTORS

Nucleonix Systems offers wide range of NaI Scintillation Detectors of different sizes both with flat & well type crystals, to meet the requirements of wide range of users for Gamma ray spectrometry measurements.
Scintillation detectors offered include 1"x1", 2"x2" & 3"x3" NaI integral assemblies with built-in pre-amplifiers. These detector assemblies give excellent stability, superior performance & good resolution in the range of 8.0 to 9.5% for Cs-137. Scintillation detectors of other sizes can be offered against user specific requirements also.

Important Specifications Detector Type
Flat/Well type NaI crystal
SD 151 SD 152/SD 152 W SD 153/ SD 153W
Crystal Sizes
1” x 1” 2” x 2” 3” x 3”
a. Flat crystal
b. Well Size (applicable for SD 152 W & SD 153 W only)
--- 0.656” dia x 1.546” deep 0.656” x 1.546” deep
Photo multiplier
R6095 of Hamamatsu or its equivalent EMI 9857 or 9266 EMI 9305 or its equivalent
Resulation (Better than)
8.5 % 8.5 % 9.5%
Pre-amplifier
Built - in Built - in Built - in
Gain (Approx.)
25 25 25
Noise (RMS. referred to input)
Less than 50 µV Less tha 50µV Less than 50 µV
Operating Voltage
600 to 900 V 700 to 900V 750 to 900V
Out put
Positive Tail Pulse Positive Tail Pulse Positive Tail Pulse
Output impedance
90 Ohms 90 Ohms 90 Ohms
Power Requirement (Typical)
-12V @ 12 mA -12V @ 12mA -12 V @ 12mA
(b) GAMMA REFERENCE STANDARD SET TYPE GS 290

Gamma Reference Standard Set Type: GS290 consists of a set of FIVE Gamma sources evaporated & sealed on 25mm dia x 5mm plastic disc covering SIX photopeak energies in the range of 3 to 5 micro curie. A reference chart for this is given below. The accuracy of these sources is in the range of +/-10%. All these dics sources are enclosed in a box made of acrylic sheet and supplied.

Note : BRIT is not able to supply this Mn-54 at present. In view of this we are able to give only 5 sources in the Gamma Reference set.
Gamma Isotope Energy Mev Nominal Activity Half life
Co-57 0.123 2-5 µci 273 Days
Ba-133 0.36 (Main) 2-5 µci 7.5 years
Cs-137 0.662 2-5 µci 30 years
Co - 60 1.17; 1.33 2-5 µci 5.3 years
Na-22 0.511; 1.280 2-5 µci 2.6 years

c) LEAD SHIELD TYPE LS 250
This Lead Shield is designed to shield Scintillation Detectors of NUCLEONIX make. LS 250 is built-up of NINE interlocking rings with bottom and top plates. The bottom ring is provided with a small opening so that the cables from the Scintillation Detector Pre-amplifier base could be taken out for connecting to the Gamma ray spectrometer counting system.
This Lead Shield Type: LS 250 is compact and just enough to accommodate any of the Scintillation Detectors supplied by NUCLEONIX. The top plate is provided with a plug and cock for introducing the source on the flat crystal and liquid vial into the well type crystal respectively. The building block type of construction of lead shield makes it convienient to assemble. The inside of the lead shield is lined with Aluminium to minimise scattering.
Dimensions :
a. External : 200mm dia x 433mm height
b. Internal : 120mm dia x 360mm height
c. Weight : Approx. 92 Kgs.

(f) FREE EXPERIMENTAL BOOK LET : A booklet called "Experiments with Gamma Ray Spectrometer" will be supplied with each Gamma Ray Spectrometer kit, when you purchase. This illustrates in details about the experiments that can be done using this kit. Each experiment write-up contains, list of items required, experimental procedure, experimental data, analysis & computations, graphs etc.

 

Plot No.162 A & B, Phase-II, IDA, Cherlapally, Hyderabad-500051 India Phone:+91-40-27263701, 32918055, 32914548 Fax : 040 - 27262146
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