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Investigations in the Field of Nuclear Physics with Neutrons

• Providing the neutron beam from IREN for physical experiments. Test experiments with a prototype of uranium non-multiplying target.
  
  Fundamental investigations of nuclear reactions with neutrons:
  
• Investigation of energy dependence of the radiative neutron capture cross section for the ²⁰⁷Pb isotope in the energy region from thermal to 10 eV at the beam of the IREN facility for the purpose of detection of the negative p-resonance.
  
  
• Continuation of the program "Experimental determination of the cross sections and angular distributions of (n,p), (n,) reaction products using fast neutrons with energies 4-6.5 MeV" at the facilities EG-5 FLNP JINR and EG-4.5 Peking University ( ³⁵Cl, ^natMg, ⁶⁶Zn, ¹⁴⁴Sm).
  
  
• Commissioning of the detector system "Romashka" at the IREN beam. Measurements of the gamma-ray yields fluctuations in neutron resonances.
  
  
• Investigation of prompt neutrons in fission of ²³⁵U with the help of position-sensitive detector at the IREN facility and IBR-2M. Development of electronic apparatus for the combined pulse height/time-of-flight spectrometer. Obtaining of prompt fission neutron spectra of ²³⁵U using the NE-213(BC-501) liquid scintillator and solid (p-terphenil) fast neutron detectors. Development of electronic apparatus for position -sensitive fission fragment detector with high position sensitivity (~ 0.2-0.5 mm) suitable for neutron imaging.
  
  
• Measurement of the P-odd angular correlation coefficient in the reaction ¹⁰B(n,) ⁷Li at the cold polarized neutron beam with an accuracy better than 3 10 ^-8 in order to determine (or set the limit on) the value of electro-weak pion-nucleon coupling constant f due to neutral currents in nucleon-nucleon interactions.
  
  
• Measurement of fission fragments and light particles using pixel detectors TIMEPIX.
  
  
• Measurement of T-odd effects for -particles, neutrons and gamma-rays from fission at cold polarized neutron beams.
  
  
• Measurement of the intensity distribution of two-quantum cascades for the ²³⁸U target at IREN. Determination of level density parameters.
  
  
• Measurement of leakage neutron spectra from a massive (515 kg) target of natural uranium irradiated by deuterons with energies of 1-8 GeV.
  
  
• Construction of a new -spectrometer and testing of the technique of the (n,) reaction measurements for neutron energies 10-14 MeV.
  
  
• Determination of the nuclear precession of the neutron as a function of energy for various nuclei. Measurements of the nuclear precession of the neutron at hydrogen for two energies of neutrons.
  
  
• Search for singlet deuteron in experiments at the mirror neutron guide of channel No 11B of the IBR-2M reactor.
  
  Investigation of the fundamental properties of the neutron, UCN physics:
  
• Experimental investigation of the properties of background at the nn-scattering measurement facility and the methods of its suppression.
  
  
• Performing of tests of the AURA installation at the beam No 2 of IREN and test measurements of angular anisotropy of elastic scattering neutrons on the vanadium and light nuclei samples.
  
  
• Obtaining of new physical results in the experiment on verification of the equivalence principle.
  
  
• Setting of limits on the existence of short-range interactions at distances ~ 10 microns by the GRANIT spectrometer at ILL (Grenoble, France).
  
  
• An experimental study of the possibility of cold neutron accumulation at the end of a neutron beam in a cavity of solid methane.
  
  Applied research:
  
• Elemental and isotopic analysis of cosmic objects, geological samples and boron ceramics by neutron spectroscopy.
  
  
• Irradiation of samples using the pneumatic transport system at the IREN facility.
  
  
• Continuation of measurements of yields of Mo-100 and Sn-117m medical isotopes at the bremsstrahlung electron beam at IREN.
  
  
• Precision investigations of oxygen distribution in nanolayers of titanium oxide.
  
  
• Mathematical and physical modeling and calibration of the DAN equipment complex intended for search of water ice from aboard the CURIOSITY Mars rover.
  
  
• Biomonitoring of atmospheric deposition of trace elements in some selected areas of Russia, countries of Eastern and Central Europe, Asia (Vietnam, Mongolia) and Africa (Egypt, SA). Continuation of investigations using NAA in ecology, medicine, biotechnology and development of new materials (synthesis of fine-crystalline diamonds and boron nitride).
  
  

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