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Article
Effect of Response Approximation on Accuracy of Surrogate Modeling of On-Chip Spiral Inductor
This paper considers how modeling conditions affect the accuracy of the on-chip spiral inductor. Various approximation methods, such as Kriging model for interpolation by exponential correlation and single exp...
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Article
Open AccessExchange-bias and magnetic anisotropy fields in core–shell ferrite nanoparticles
Exchange bias properties of MnFe \(_2\) 2 ...
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Article
Underground Physics and the Nonlinear Delayed Barometric Effect of the Gamma-Ray Background
The gamma-ray background problem is known to be acute in any low-background underground experiment. The variations of this background depend on many parameters and should be taken into account when interpretin...
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Article
Response of the PRISMA-YBJ Detectors to Earthquakes
Interesting results are obtained using a setup with electron-neutron detectors (EN-detectors) developed for the PRISMA (PRImary Spectrum Measuring Array) project to study extensive atmospheric showers. A small...
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Article
Studying the Mass Composition of Cosmic Rays with Energies of 1015–1017 eV in the PRISMA Project
The mass composition of primary cosmic rays remains an unresolved problem of physics in the region of energies above the knee. Results from different experiments are contradictory in assessments of the mean ma...
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Article
Long-term variations in the natural thermal neutron flux at 4300 m above sea level
Long-term variations in the natural thermal neutron flux in Tibet at an altitude of 4300 m above sea level are studied using scintillation en-detectors developed at the Institute for Nuclear Research, Russian ...
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Article
An Approach to the short- and long-term forecasting of strong earthquakes: A case study of the M w = 9.0 Tohoku earthquake, Japan, March 11, 2011
Seismic hazard forecasts submitted in real-time mode to the Kamchatkan Branch of the Russian Expert Council (KB REC) on Earthquake Prediction, Seismic Hazard, and Risk Assessment are described. In the first lo...
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Article
Variations in the neutron flux during thunderstorms
The results from the registration and analysis of sporadic variations of atmospheric thermal neutron flux during thunderstorms are reported. Measurements were performed in Moscow and at the Baksan Neutrino Obs...
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Article
Novel method for detecting the hadronic component of extensive air showers
A novel method for studying the hadronic component of extensive air showers (EAS) is proposed. The method is based on recording thermal neutrons accompanying EAS with en-detectors that are sensitive to two EAS...
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Article
Energy deposit spectrum of the EAS electromagnetic component at the PRISMA-32 array
The results from a 29-month investigation into the EAS electromagnetic component using the PRISMA-32 array are presented, notably for the central density spectrum and energy deposit spectrum. The array consist...
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Article
Production of Medical 99Mo and Molybdenum-Technetium Generators at the karpov Research Institute of Physical Chemistry
This article is devoted to the development of the production of 99Mo used in nuclear medicine. The stages in the development of the production of 99Mo and molybdenum-technetium generators are shown. Production ha...
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Article
A novel type of EAS recording array: First results
The prototype of a novel type EAS (extensive air shower) recording and investigation array (the PRISMA project) is created on the basis of the NEVOD experimental complex through cooperation between Institute f...
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Article
Underground hadronic calorimeter for EAS studies
An innovative method for studying the properties of extensive air showers (EASes) that is based on the detection of thermal neutrons generated by high energy hadrons under a soil absorber of 500 g cm−2 is propose...
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Article
Energy absorption by a magnetic nanoparticle suspension in a rotating field
Heat generation by viscous dissipation in a dilute suspension of single-domain ferromagnetic particles in a rotating magnetic field is analyzed by assuming that the suspended particles have a high magnetic rig...
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Article
Dynamic hysteresis in an anisotropic superparamagnet
Dynamic magnetic hysteresis in a single-domain uniaxial particle was studied on the basis of the kinetic approach for the base of an arbitrary angle between the easy magnetization axis and an applied field. Hy...
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Article
Magnetic properties of biomineral particles produced by bacteria Klebsiella oxytoca
Ferrihydrite nanoparticles (2–5 nm in size) produced by bacteria Klebsiella oxytoca in the course of biomineralization of iron salt solutions from a natural medium exhibit unique magnetic properties: they are cha...
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Article
Correlation of variations in the thermal neutron flux from the Earth’s crust with the Moon’s phases and with seismic activity
The results of the long-term recording of thermal neutron flux near the Earth’s surface with the use of an unshielded scintillation thermal-neutron detector are presented. The data obtained indicate the presen...
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Article
How does the EAS look like in thermal neutrons?
The first experimental data on detection of thermal neutrons accompanying extensive air showers (EASs) which were obtained at two prototypes of the future novel PRISMA EAS array are reported. The operation of ...
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Article
Measurement of 10–100 TeV cosmic ray anisotropy at upgraded Carpet-2 installation
The first results obtained during one year of measurements at the upgraded shower Carpet-2 installation at the Baksan Neutrino Observatory of the Institute for Nuclear Research, Russian Academy of Sciences, ar...
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Article
Magnetic relaxation in a suspension of antiferromagnetic nanoparticles
A kinetic model is proposed to describe the low-frequency magnetodynamics of antiferromagnetic nanoparticles suspended in a fluid. Because of their small size, apart from an anisotropic magnetic susceptibility...
