The article deals with an accidental situation development final stage accompanied by a powder explosion (combustion) incoming to nuclear weapon part or dirty bomb and fissile materials dispergation discharge in the air. Formulas for impurity level express assessment fallen earth surface due dry settling stack effluents washout precipitates are given.

Dual-energy X-ray imaging in the keV range is a well-known technique e.g. used in baggage scanning. It requires two measurements at different energies and/or detector efficiencies and allows displaying material properties as the effective atomic number and mass density. The method thus provides the information allowing identifying illicit materials such as explosives and contraband or high-Z ma...

Abstract The Dohol formation is predominantly composed of sedimentary rocks; however, the black shales attract much attention because their potential to generate hydrocarbons. Black generally have a high organic matter content and can serve as good source rocks for hydrocarbon generation. Therefore, this study was conducted characterize rocks, including shales, which are great importance discov...

Variety of applications of fast neutron detection utilize thermal neutron detectors and moderators. Examples include homeland security applications such as portal monitors and nuclear safeguards which employ passive systems for detection of fissile materials. These applications mostly rely on gas filled detectors such as 3He, BF3 or plastic scintillators and require high voltage for operation. ...

The 23 aU/23 $ U ratios for nine bulk chondritic meteorites and a terrestrial basalt were measured. The total range in 235U/235U determined for both total meteorites and for acid leaches was from 137.2 to 138.3 and to within the error limits indistinguishable from normal terrestrial U. The typical errors in a single determination are +6•oo (2aM) for a 2 ng U sample from a chondrite. Taking the ...