Improved Apparatus for Obtaining Ionic Mobility Distributions of Radioactive Aerosols

Radioactive Aerosols in the Environment

Radioactive aerosols differ physically from non-radioactive aerosols by the appreciable charge that they may carry. This arises from a competition between the charge generated by the radioactive decays occurring within each aerosol and the subsequent diffusion of the ions formed back onto the particle. At high levels of activity, the particles may self-discharge, at low and intermediate activit...

A Plunger Apparatus for Relativistic Radioactive Beams

Nuclear structure investigations with radioactive beams are at present one of the most interesting and active fields in nuclear physics. Absolute transition probabilities are of crucial importance for these studies which can be directly deduced from the lifetimes of excited levels. The aim of this work is to investigate the feasibility of Doppler shift methods to measure level lifetimes of exot...

Apparatus for obtaining maximal blood volume during exsanguination of rabbits.

Residence time of tropospheric aerosols in association with radioactive nuclides.

The residence time of atmospheric aerosol particles is a function of various removal processes, such as dry deposition by impaction, diffusion, sedimentation and resuspension as well as wet deposition by rain drops (precipitation scavenging). Estimation of the mean-residence time of atmospheric aerosols could be based on measurements of the activities and ratios of activities of cosmic-ray prod...

Method and Apparatus for Improved Active Sonar

The invention is a method for improved active sonar using a singular value decomposition filtering and a Volterra-Hermite Basis Expansion to model real active sonar measurements. The fitting model minimizes the sum of the squared errors between a measured channel response, z(t), and model response, y(t), which is a fitted Volterra Series solution. The model requires as input an excitation wavef...