DMCA NaI(Tl) Scintillation Detector High Detection Efficiency High Light Output
High detection efficiency high light output DMCA NaI(Tl) scintillator detector
Detector 1
Introduction
KHD-1 scintillation detector is a new generation γ-ray measurement device. Combined with lead chamber and Multi-channel Analyzer(MCA) to form Energy Spectrometer, widely used in weak radioactivity analysis field, such as building materials, food, geology etc.
KHD-1 scintillation detector's advantage including compact structure,easy operation,low background,excellent energy resolution,stable output,high reliability,durability and high detection efficiency.
A gamma ray interacting with a scintillator produces a pulse of light that is converted to an electric pulse by a photomultiplier tube (PMT). The PMT consists of a photocathode, a focusing electrode, and 10 or more dynodes that multiply the number of electrons striking at each dynode. A chain of resistors typically located in a plug-in tube base assembly biases the anode and dynodes. Complete assemblies including the scintillator and PMT are available.
The high Z of iodine in NaI(Tl) crystals result in high efficiency for gamma-ray detection. Resolution for a 3-inch diameter by 3-inch length crystal is typically about 7% for 137Cs and slightly worse for larger sizes.
Properties
| Specification | Range | Unit |
| Scintillator Effective Size | φ50 X 50 | mm |
| Input Voltage | 11.5 ~12.5 | V |
| Input Current | ≤60 | mA |
| Output Polarity | Positive Polarity | - |
| Output Amplitude (MAX)1) | 9 | V |
| Output Amplitude(TYPE)2) | 1 | V |
| Resolution(Cs137)3) | ≤8.5 | % |
| Background Count Rate(30kev~3Mkev) | ≤250 | min-1 |
| Work Temperature | 0℃ ~ +40 | ℃ |
| Storage Temperature | -20 ~ 55 | ℃ |
| Humidity | ≤90 | % |
Notes:
1.Detector signal exceeds this value, a truncation will occur.
2. The amplitude of signal is usually less than 1V in spectrum analysis.
3.The value is measured when detector preheated for 10 minutes, the counting rate within 1000, total counting number is less than 105 in Cs137 peak.
Advantage:
High light output
High detection efficiency
Low cost
Good high temperature resistance
FWHM 7%
Working Principle
Interface
| Interface | Wiring | Wiring Definition |
| BNC | Coaxial Cable | Signal Line |
| DB9 | Triple-core Shielding Wire | 2:+12V,5:-12V,9:GND |
Notes:
High Voltage should be set before putting on the market, without regulation function.
Product shots:
FAQ:
1.Q: Are you a factory manufacturer?
A: Yes ,we are manufacturer with 13 years experience in the scintillator crystal industry and supplied many famous brands with good quality and service.
2.Q:Where is your main market?
A:Europe, America, Asia.
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