A Description of the Experiment The DNC system at RMCC uses the SLOWPOKE-2 reactor [2] as a source of neutrons. Samples containing 235 U were prepared as acidified aqueous solutions from certified reference standards (natural U standard CRM 4321C, NIST, Gaithersburg, MD, and depleted U standard CRM U005A 0.5064 ± 0.0003 atom% U, New Brunswick Laboratory, Argonne, IL). Each solution was containe...

In the last two decades we have assisted to a rush towards finding 3He-replacing technology capable of detecting neutrons emitted from fissile isotopes. The demand stems applications like nuclear war-head screening or preventing illicit traffic radiological materials. Semiconductor detectors stand among strongest contenders, particularly those based on materials possessing wide band gap silicon...

The Reich--Moore approach has been extensively used in the resolved resonance energy range (RRR) for a wide of isotopes. approximation was suggested cross-section representation fissile isotopes since experimental fission width distribution according to given spin and parity showed that only few degrees freedom (DoF) involved during process. Experimental data RRR were successfully reproduced, i...

Present techniques admit the possibility of studying the character of fission fragments with spectroscopic identification of pairs of fragments. The simultaneous measurement of the masses and atomic numbers of fission fragments has been demonstrated in studies of the fission of 252Cf (1). The atomic number is determined by detection of a characteristic x-ray, most often a K-x-ray, emitted by on...

In this paper, the Monte Carlo N-Particle extended computer code (MCNP) were used to design a model of European Sodium-cooled Fast Reactor. The multiplication factor, conversion delayed neutrons fraction, doppler constant, control rod worth, sodium void masses for major heavy nuclei, radial and axial power distribution at high burnup are studied. results show that reactor breeds fissile isotope...

The routine execution of a fine-needle aspiration puncture biopsy is the most informative method for preoperative diagnosis thyroid neoplasms, as well promising base improving molecular diagnostics in an endocrine surgery clinic conjunction with pathological laboratory. aim our work was comparative analysis expression cell cycle signaling molecules various diseases: toxic goiter, adenomatous au...

• Initial coatings improve the microstructure of surrogate fuel elements. coating thickness is crucial in tuning microstructure. Potential for elements with greater than 60 vol.% fissile exists. Higher fractions would result improved efficiency and decreased weight. Nuclear thermal propulsion (NTP), which may utilize cermet fuels, shows promise improving feasibility long-distance space travel. ...