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Investigations of Neutron Nuclear Interactions
and Properties of the Neutron

Investigations of violations of fundamental symmetries in neutron-nucleus interactions and related data

• Determination of parameters of T-odd effects in the fission of ²³⁵U on a hot neutron source.
  
  
• Development of the design of an instrument for measuring the P-odd effect in the reaction ³He(n,p) ³H.
  
  
• Investigation of neutron paramagnetic resonance of the first kind in samples of titanium hydride TiH₂ in the polarized neutron energy range of 0.062-2.3 eV using the KOLKHIDA facility at the IBR-2 reactor.
  
  
• Measurement of dependence of multiple neutrons on mass and total kinetic energy of fission fragments in the fission reaction of ²³⁵U with thermal neutrons at the IBR-2 reactor.
  
  
• Measurement and analysis of angular correlations in the emission of neutrons and light charged particles in the spontaneous fission of ²⁵²Cf.
  
  
• Measurement of inelastic neutron scattering parameters for light and heavy elements in the framework of the TANGRA project.
  
  
• Test measurements of ³He(n,p) ³H and ⁶Li(n,) ³H reactions on beamline 1 of the IREN facility.
  
  
• Measurements of (n,) reaction with Ni-60,61 isotopes for neutron energies E_n =4.5-6.5 MeV at the accelerators EG-5 in FLNP JINR and EG-4.5 of the Institute of Heavy Ion Physics of Peking University.
  
  
• Measurements of angular correlations in ¹⁴N(n,p), ¹⁴N(n,) reactions with fast neutrons at the EG-5 accelerator.
  
  Investigation of fundamental properties of the neutron, UCN physics:
  
• Instrument development work to improve parameters of the GRANIT spectrometer designed for experimental determination of characteristics of resonance transitions between quantum states of neutrons in the gravitational field of the Earth. .
  
  
• Determination of characteristics of diamond nanopowder reflectors for targeted extraction of very cold neutrons.
  
  
• Construction of a setup to measure the energy dependence of the UCN loss factor in the energy range close to limiting values.
  
  
• Preparation of the experiment for observation of neutron quantum tunneling through an oscillating potential structure: quantum calculations, development and testing of the experimental setup.
  
  
• Nonstationary quantum experiments with slow neutrons: neutron diffraction by surface ultrasonic waves and reflection from an oscillating mirror.
  
  Applied and methodological research:
  
• Calibration measurements with a 2D model of a position-sensitive detector with a resolution for X, Y coordinates of no worse than 0.7 mm.
  
  
• Manufacturing of the first section of the detector of multiple neutrons based on SNM-14D counters.
  
  
• Investigation of thin near-surface layers containing various elements with a depth resolution of about 10 nm using nuclear-physics methods (Elastic Recoil Detection Analysis and Rutherford Backscattering Spectrometry).
  
  
• Elemental and isotopic analysis of archaeological samples at the IREN facility using neutron spectroscopy, neutron and gamma activation analyses.
  
  
• Comparative analysis of elemental analysis methods using the tagged neutron method, standard neutron sources and other non-destructive methods.
  
  
• Carrying out of neutron activation analysis of environmental, geological, biological samples and novel materials at the IBR-2 reactor using the REGATA facility in the framework of the projects supported by grants and programs of JINR Member States and its Associated Members, RFBR and IAEA.
  
  
• Construction of a spectrometric system to measure natural and man-made radioactivity for radioecological and materials science research.
  
  
• Work on automation of neutron activation analysis in INP (Almaty, Kazakhstan). Training of INP personnel (Almaty, Kazakhstan) on the theoretical foundations of neutron activation analysis and practical application of modern software for obtaining and processing spectrometric data.
  
  Development of the IREN facility
  
• Providing the neutron beam time of 1000 hours from IREN for physical experiments.
  
  
• Installation of the cooling system of the LUE-200 accelerator.
  
  

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