The possibility to probe new physics scenarios of light Majorana neutrino exchange and right-handed currents at the planned next generation neutrinoless double
β
decay experiment SuperNEMO is ...discussed. Its ability to study different isotopes and track the outgoing electrons provides the means to discriminate different underlying mechanisms for the neutrinoless double
β
decay by measuring the decay half-life and the electron angular and energy distributions.
A technique for calculating explosive loads on production equipment, buildings, and structures subjected to external and internal accident factors is considered. A device for operation of equipment ...prone to fire and explosion in the production chains of modern industry is developed. The computational formulas obtained may be used in the design of explosive valves and diaphragms for explosion protection of production equipment as well as in the design of easily jettisoned roofing and propulsive bays for explosion protection of buildings.
Assessment of radioactive contamination of construction materials used in deep underground experiments has been carried out using ultra-sensitive analytical methods such as radiometrics, inductively ...coupled plasma mass spectrometry (ICPMS), accelerator mass spectrometry (AMS), and neutron activation analysis. The lowest detection limits, < 1 nBq g
−1
, has been obtained with ICPMS and AMS techniques.
The article is devoted to the development of an autonomous profiling system for measuring the aquatic environment under ice. The system moves up and down in the water column along a cable with a load ...at the lower end, which is lowered into a lane in the ice. The system carrier is designed for transporting an acoustic Doppler current profiler and a salinity, temperature, and pressure probe. The system will be useful for long-term measurements of vertical profiles of the current speed and marine environment parameters, as well as ice draft. The article describes in detail the structure and operation of the system. The hydraulic scheme of the carrier buoyancy system is presented.
The principal aspects of
44
Ti application in time-differential γγ perturbed-angular-correlation method (TDPAC) for studying condensed matter are discussed. In the presented spectrometer ...modification, the efficiency of
44
Ti application can be considerably increased by using thin NaI scintillator crystals. Promising techniques for
44
Ti production and a method for synthesizing samples are described. Examples of TDPAC studies of titanium (rutile TiO
2
) and scandium (Sc
2
O
3
) oxide samples are shown.
The stress–strain state of gear teeth in a self-braking gear system is studied in forward motion and when braking. Finite-element results are compared with analytical findings. The tensile and ...tangential stresses in contact zones of a specific self-braking transmission are determined.
Using self-contained acoustic buoys developed at the Institute of Oceanology, Russian Academy of Sciences, experiments are performed to verify the possibility of acoustic tomography in a local region ...of a shallow-water sea. In the experiments, compound phase-manipulated signals are transmitted and the time responses of the medium are measured using three bottom-moored receiving and transmitting transducers separated by a distance of about 1 km. Identification of different groups of rays using simple models of the medium is considered. The results of reconstructing the sound and current velocities are compared with the data of independent measurements. The experiment is performed in complex weather conditions as an anticyclone passed to the experimentation region. It is shown that this acoustic tomography method is somewhat advantageous in the case of the absence of volumetric scatterers in the water bulk when the Doppler method of measuring currents fails.
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