Particle sizing in the electrodynamic balance

Stability Characteristics of Cylindrical Fibres in an Electrodynamic Balance Designed for Single Particle Investigation

An electrodynamic balance (EDB) of the double ring double disc type has been designed for studying single microparticles. It allows electrostatic particle injection and recovery as well as alignment of elongated particles. The stability characteristics of cylindrical fibers and their alignment in this EDB are investigated. Angular as well as translational oscillations are observed, each associa...

Optical particle sizing in backscatter.

Several possibilities for the use of elastic light scattering in the backscatter range (scattering angle theta(s) > 140 deg) for determination of size, velocity, and refractive index of spherical particles are investigated. First the phase Doppler technique is considered. Numerical simulations of light scattering with the Lorenz-Mie theory are used to show that the phase Doppler technique is un...

Doebner-goldin Equation for Electrodynamic Particle. the Implied Applications * with Appendix: Dirac Equation for Electrodynamic Particles * *

We set up the Maxwell's equations and subsequently the classical wave equations for the electromagnetic waves which together with the generating source, a traveling oscillatory charge of zero rest mass, comprise a particle traveling in the force field of an usual conservative potential and an additional frictional force f ; these further lead to a classical wave equation for the total wave of t...

Commercial spectrophotometer for particle sizing.

Particle-size distribution and the concentration of polystyrene particles suspended in water were accurately recovered from the inversion of spectral extinction data measured with a commercial spectrophotometer. The instrument was modified by placing a spatial filter in the collection optics to prevent low-angle scattered light from affecting the measurement of transmitted power. The data were ...

A new electrodynamic balance design for low temperature studies