Correction to: Calibration of Transverse Energy Distribution Parameters in a Beam of Infrared Radiation Using a Highly Sensitive Measurement Device

Measurement Techniques -     

Electric-Field-Induced Impurity Effects in p-GaSe Single Crystals

Inorganic Materials - Electric-field-induced impurity photoconductivity and spontaneous dark current pulsations have been detected in nominally undoped and rare-earth (gadolinium and erbium) doped...     

Design and fabrication aspects of a plutonium-incineration experiment using inert matrices in a “Once-Through-Then-Out” mode

In the plutonium incineration experiment, named ‘Once-Through-Then-Out’ (OTTO), that is being prepared by JAERI, PSI and NRG, the use of highly stable inert matrices will be examined. The inert matrices MgAl₂O₄ spinel and ZrO₂ are insoluble in nitric acid and are considered as good storage media for final disposal. These inert matrices will be used in this experiment, which is representative for an OTTO scenario. A total of 7 Pu-containing targets were prepared for an irradiation in the High Flux Reactor in Petten. The objective of the irradiation is to reach a very high Pu-burnup. The main parameters to be studied are stability under irradiation, swelling, fission gas release and chemical interactions in the fuel. Four targets will be equipped with thermocouples for on-line monitoring of central temperature. Four of the targets contain MgAl₂O₄ as an inert matrix, 2 targets contain ZrO₂ and one target contains mixed-oxide (MOX) fuel for reference purposes. The fissile plutonium concentration is 0.32–0.44 g cm⁻³. Both particle-dispersed fuel and homogeneous dispersions were fabricated in order to test the effect of the size of the fissile inclusions. The design of the experiment and the fabrication of the samples are discussed.     

Silicon Wafer Bonding by Chemical Assembly of a Surface by Molecular Layering and Gas Cutting

It is suggested that chemical and heat treatment of surfaces under moist conditions (including also chemical assembly of a surface by molecular layering) and gas-cutting be used to fabricate silicon on insulator structures to obtain silicon wafer surfaces with prescribed chemical composition, activation, and surface modification.     

NOTE on the oil of Castanha de Cotia

Oil of Cotia, a new semi-drying oil, obtained from a Brazilian nut is described. Some chemical constants are determined and tabulated. The high Diene Value of this oil and other properties indicate that it might be used in the paint and varnish industries.