Chemical Analysis of Surfaces Using Alpha Particles

Chemical analysis of surfaces using alpha particle interactions in instruments incorporating curium 242 alpha sources and semiconductor silicon detector

Electron Paramagnetic Study of Spin Labelled Molecule on Colloidal Surfaces

Spin labelling techniques have been used to determine the adsorption characteristics of a nitroxide on colloidal gold. The number of molecules adsorbed per surface atom was determined and the desorption of adsorbed molecules on coagulation of gold noted

The chemical analysis experiment for the Surveyor lunar mission

Alpha particle detector experiment for chemical analysis of lunar surface by Surveyor spacecraf

Interaction of Colloidal Particles with Surfaces of Biological Significance

The adhesion of colloidal gold on membranes was examined with an electron microscope with protein on the membrane, on the colloidal particles and present on both membrane and particles. The conditions for best adhesion were determined. Quantitative measurements were caNied out using adhesion to the membrane to monitor diffusion, centrifugation and electrophoresis of colloidal particles. Electrophoresis in a centrifugal field was used as a nul method to determine the charge on the colloidal particle

Alpha radioactivity of the lunar surface at the Surveyor 5, 6, and 7 landing sites

Alpha radioactivity of lunar surface at Surveyor 5, 6, and 7 landing site

Diffusion-limited aggregation as branched growth

I present a first-principles theory of diffusion-limited aggregation in two dimensions. A renormalized mean-field approximation gives the form of the unstable manifold for branch competition, following the method of Halsey and Leibig [Phys. Rev. A {\bf 46}, 7793 (1992)]. This leads to a result for the cluster dimensionality, D \approx 1.66, which is close to numerically obtained values. In addition, the multifractal exponent \tau(3) = D in this theory, in agreement with a proposed `electrostatic' scaling law.Comment: 13 pages, one figure not included (available by request, by ordinary mail), Plain Te

Transport Properties of Solitons

We calculate in this article the transport coefficients which characterize the dynamics of solitons in quantum field theory using the methods of dissipative quantum systems. We show how the damping and diffusion coefficients of soliton-like excitations can be calculated using the integral functional formalism. The model obtained in this article has new features which cannot be obtained in the standard models of dissipation in quantum mechanics.Comment: 16 Pages, RevTeX, Preprint UIU

An Instrument for Lunar Surface Chemical Analysis

Instrument for lunar surface chemical analysis that uses interactions with matter of monoenergetic alpha particle