Fe Plates Research Articles

Particle identification by plastic flash-chambers

The possibility to utilize plastic flash-chamber systems for particle identification is investigated. It is first pointed out that a many-layer system of thin-wall extruded flash cells is suitable for ionization measurements, and might be applied e.g. to a search for e/3 quarks. The development of the cascade showers in a plasttic flash calorimeter model containing 20 Pb plates 0.5 cm thick and 30 Fe plates 5 cm thick, alternated with flash chambers,is then simulated by Monte Carlo programs, for primary electrons and pions of various energies from 1 to 200 GeV. Analysis of the results of this simulation show that the detector is capable to identify muons, γ's, electrons and charged hadrons with good confidence level.

Polymerization of acrylamide compounds onto Fe plates: An alternative route for applying polymer coatings

AbstractAcrylamide and some of its derivatives were polymerized onto the surface of Fe plates by causing a slight corrosion of Fe to Fe2+ in the presence of perdioxy compounds. In water within a suitable pH range, the acrylamide monomers are likely to store at the metal–solution interface and to absorb on the iron surface. Thus, the polymerization takes place in situ, leading to the formation of uniform film coatings; the presence in the solution of a radical inhibitor imparts considerable stability to the bulk of the system. The dependence of the polymerization kinetics on several variables such as pH, monomer concentration, and peroxide concentration has been determined, and some characteristics of the resulting coatings were investigated.

Measured and predicted neutron fluxes in, and leakage through, a configuration of perforated Fe plates in D2O

Detailed neutron flux measurements have been performed in a 48 cm thick configuration of thin regions of Fe and D2O (30% of total thickness Fe), both when the Fe regions are massive and when they are penetrated by 15 cm dia. D2O channels. It was found that the total leakage of neutrons through the configuration was increased by 25% in the latter case. It is shown that this increase and the detailed flux distribution on a duct axis can be satisfactorily predicted by a one-dimensional shielding code when the duct is calculated as a pure D2O layer and a radial buckling term is used for the < 1 eV neutrons when penetrating the Fe regions. Another calculation through the massive part of Fe is to be performed in the usual way. It is believed that this 2-component method is usable in a wider range of similar configurations. A calculation with regions where the Fe and the D2O ducts have been homogenized into a single material overestimates the increase in leakage, and the relative error is greater than that in the 2-component calculation.

Measured and predicted neutron fluxes in, and leakage through, a configuration of perforated Fe plates in D 2O

Detailed neutron flux measurements have been performed in a 48 cm thick configuration of thin regions of Fe and D 2O (30% of total thickness Fe), both when the Fe regions are massive and when they are penetrated by 15 cm dia. D 2O channels. It was found that the total leakage of neutrons through the configuration was increased by 25% in the latter case. It is shown that this increase and the detailed flux distribution on a duct axis can be satisfactorily predicted by a one-dimensional shielding code when the duct is calculated as a pure D 2O layer and a radial buckling term is used for the < 1 eV neutrons when penetrating the Fe regions. Another calculation through the massive part of Fe is to be performed in the usual way. It is believed that this 2-component method is usable in a wider range of similar configurations. A calculation with regions where the Fe and the D 2O ducts have been homogenized into a single material overestimates the increase in leakage, and the relative error is greater than that in the 2-component calculation.