Egor Voronenko
(Yurievich)
07/10/2015, 13:00
Methods of experimental physics
Portable Radiometer tritium RKB-05P created for selective control tritium in the air (in gas and vapor phase) and water (in condensate water vapor from the air or in water after distillation) and to measure the activity of other beta-emitting radionuclides in water sample. The principle of operation is based on measurement of the activity of samples previously taken from the water or air in...
Dr.
Sergei Grabchikov
(Scientific-Practical Materials Research Center, National Academy of Sciences of Belarus)
07/10/2015, 13:15
Methods of experimental physics
The problem of electronic and scientific equipment protection becomes more actual nowadays. Protection from low-frequency electromagnetic radiation (LF EMR) is the most complicated case of electromagnetic shielding.
The results of the shielding efficiency from LF EMR by multilayer film shields based on permalloy / copper systems, depending on their internal structure, the parameters of the...
Mr.
Rodion Faradzhaev
(National Research Nuclear University MEPhI)
07/10/2015, 13:30
Methods of experimental physics
Scintillation detectors based on Hamamatsu photomultiplier tubes (PMTs) R6233-100 and R6231-100 with diameter of photocathode 76 mm and 51 mm respectively are used in GRIS experiment, which is planned to be installed onboard the ISS, and in PING-M for Interhelioprobe mission. PMT performances significantly change under the influence of a magnetic field. Even the relatively weak geomagnetic...
Mr.
Phyo Wai
(NRNU MEPhI)
07/10/2015, 13:45
Methods of experimental physics
In different materials for magnetic shields the maximum permeability is achieved at different values of the magnetic field. This determines the choice of material. So for protection from magnetic fields strength of 10 - 150 A/m is advisable to apply the amorphous ribbon 84KXCP. For stronger fields (more than 400 A/m) multilayer film shields based on Ni20Fe80 should be used. Using these...
Mr.
Alexander Novikov
(NRNU MEPhI)
07/10/2015, 14:00
Methods of experimental physics
A method for earthquake precursors search based on variations of 222Rn concentration determined via intensity measurement of 222Rn daughter nuclei gamma ray emission lines by means of xenon gamma-ray spectrometer is discussed. The equipment description as well as the first experimental data are presented.
