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Home Azerbaijan Technologies Scintillation Dosimeter With NaI (Tl) Base

Scintillation Dosimeter With NaI (Tl) Base


Scintillation dosimeter has been developed on the base of NaI (Tl) operates at pulsed mode and the signals are received by photoamplifier (FEG-85) and the amplified signals are transmitted into the detection unit. The detection unit differing according to its specific principle of operation records the parameters of the received signal (according to the source) on the screen due to the given instruction. The advantage of the applied bloc is that its measuring period is instant (0.1sec); it is capable to control radiation background and retains its property of detection from the small angle of incidence.

The main characteristics:

  • Dosimeter type ––––––––––––––––– scintillator NaI (Tl);
  • Photoelectric amplifier ––––––––––– FGU-85;
  • Scintillation sizes ––––––––––––––– 30x40 mm;
  • Energy range ––––––––––––––––––– 100-3000 keV;
  • Gamma irradiation sensitivity –––––– (Cs137)-7 (imp/sec)/(mkR/hour);
  • Calculation speed ––––––––––––––– 350 000 impulse/sec;
  • Measurement range ––––––––––––– 0.01- 50 mR/hour;
  • Sensitivity to gamma background –– (137Cs) 0.2 (imp/sec)/(mkR/hour);
  • Measurement time ––––––––––––––– 0.1 sec.

The dosimeter has been prepared for the following purposes:

  • To measure equivalent dose and dose rate of gamma rays;
  • To measure exposure rate of gamma rays;
  • To seek radioactive materials and the sources of ionizing sources.

Innovative Aspect and Main Advantages

The main advantage is that the scintillation material has a higher recording efficiency, sufficient time and energetic differentiation abilities.

This scintillation dosimeter differs from its analogues in its high measurement accuracy, memory system and ability of transmitting the obtained measures to a computer system.

Areas of Application

  • Radioecological control of environment;
  • Radioecological service in sanitary-and-epidemio logic centers;
  • Detection of radioactive materials and equipments at customs service;
  • During emergency situations and military dangerous cases.

Fig.1. Registration of elements radiation

Stage of Development

It has been developed and tested in the Lab of “Radiation physics of semiconductors” of the Institute of Radiation Problems ANAS. Pilot prototype is available.

Contact Details

Institute of Radiation Problems
Contact person: Dr. Matanat Mehrabova
Address: 9 F.Aghayev St. AZ1143 Baku, Azerbaijan
Tel: (+994 12) 438 3224, (+994 50) 731 8177
Fax: (+994 12) 432 5187
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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