Beta Spectroscopy System

Unlike alpha or internal conversion electron decays, the spectrum of beta particles following β decays is a continuous. Hence, in order to detect the energy of beta particles with energy greater than 200 KeV is used Fermi-Kurie plot or beta-particle absorption curve in aluminum. Also, the activity of β particles is determined by energy window method. Also, the beta spectroscopy system can determine the energy and activity of beta particles after chemical processing operations for the following applications.

Beta spectroscopy is a technique widely used in the following applications:

the radiochemical analysis
the assessment of environmental studies
environmental radioactivity monitoring
health physics personal monitoring
assessment of nuclear installations, the determination of location and the study of its effect on the environment
geological dating and mineralogy
educational research applications

Since, time is very important in the rapid assessment of nuclear accidents, the Beta spectroscopy system can be used to control the contamination due to proper geometry, lead shielding with sufficient thickness, standard radioactive sources and energy window method.

Instruments used in This Set:

Beta Source
Bin Power Supply Model 8000
High Voltage Power Supply Model 8100
Preamplifier Model 3002
Amplifier Model 3600
Multichannel Analyzer (MCA) Model 4110
Plastic scintillator detector
PMT
Required Cables

All products are provided by Iman Gostar Raman Kish company.

Instruments Used In Spectroscopy System

1.BIN Power Supply Model 8000

The 8000 power supply is a 19 inch rack with a power supply of 160 watts, and all of its connectors have the standard voltage of a NIM bin.

Specifications

Input: 220 or 115 Vac
Output impedance: <0.3 Ω at any frequency up to 100 KHZ for the dc output.
Temperature coefficient: < 0.02%/°C, 0 to 60 °C
Output ripple: < 3 mV
Voltage adjustment: ±2% minimum range
Power supply

2. High Voltage Power Supply Model 8100

The IAP 8100 high voltage power supply is used for biasing various detectors.

Specifications

Output polarity: Positive or negative
Output voltage: 0 to 3 KV
Output current: 0- 10 mA
Output ripple: < 10 mV
Power: 220 Vac

3. Spectroscopy Amplifier Model 3600

The 3600 spectroscopy amplifier used in nuclear spectroscopy amplifyies and shapes the signals coming from the preamplifier.

Specifications

Input: accepts positive or negative pulses from an associated preamplifier.
Input impedance: ≈ 1 kΩ
Connector: BNC
Output: Semi-Gaussian shaped pulses, unipolar and bipolar
Output: ± 5 mV
Output impedance: 93 ohms
Gain factor: 0.3 -3000

4. Multichannel Analyzer (MCA) Model 4110

The IAP model 4110 MCA is a high resolution Wilkinson type multichannel analyzer. The 4110 is a single NIM mode that is specifically designed for use in nuclear and x-ray spectroscopy and connects via a USB port to PC. Also, MCA is fully supported by DAS software.

Specifications

Accepts Signal: positive or bipolar pulses (positive portion leading)
Input range: 25 mV to 10 V
Input impedance: 1000 Ω.
Rise time: 100 ns to 100 μs
Fall Time: 200 ns to 100 μs
Width: 0.5 μs minimum.
Input couple: DC – coupled
Connector: front panel BNC

Figure (1): Modules and components of the beta spectroscopy system

Long Term Warranty And After Sales Service

The warranty service includes the repair or service of the instrument and the free provision of services for replacing parts and repair wages for one year, but the warranty does not apply on the following cases:

Transport damages, electrical fluctuations, fire or heat, contact or penetration of water and corrosive chemicals, intense dust, lightning, natural disasters.
Instruments manipulated or repaired by persons other than the company’s representatives.
Any kind of manipulation or damage on installed holograms on the instrument.
Any displacement after installation without informing the company.
The warranty does not cover consumables.
After sales service is for 10 years with payment.

RSD

Beta Spectroscopy System