Instrument Responsible:
Frontasyeva Marina
Russia, Moscow reg., Dubna, Joliot-Curie str., 6
Tel. +7 (49621) 6-56-09
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.


Group Staff


The principal characteristics of neutron activation analysis facility REGATA 

Distance between irradiation  and measurement positions 


(Ch1-cadmium case) 


60 m

70 m

Air pressure  3-7 bar
Transportation capsule types


polyethylene,  teflon, 

aluminum, titanic

Internal volume of transportation capsule (Ø 16  mm, H - 22- 35 mm)  3.5 – 5.5 сm3 

Maximum irradiation time with 2.0 Mw power for capsules:



0.5 h

3 h

Transportation time for capsule:

teflon , aluminum 

10-20 s

3-8 s

Thermal neutron flux     Ch2 1.5× 1012 n/s сm2
Resonance neutron flux    Ch1 3.6× 1011 n/s сm2
Mass of sample for analysis depends from type of sample 1 mg – several grams


Detection limit depends on elemental composition of the sample and type of sample and can reach, for example, 10-10  for vegetable samples. Around 45 elements can be determined for such type of samples.


The principal characteristics of  spectrometers and spectra analysis

- Four HPGe detectors with efficiency 40-55% and resolution 1.8-1.9 keV (Canberra)
- Spectrometric electronics - analog type and digital processors (Canberra)
- Automated system for spectra measurement for three detectors
- Software for spectra analysis - Genie-2000 (Canberra)
- Software package for storage of information and automation of all stages of NAA (FLNP JINR)
- Low background detector with low background shield (Canberra) for measurement of environmental samples