Fine particle measurement

Dynamics in fine particle magnets

Several magnetic fine particle systems have been studied with selective excitation double Mössbauer ~SEDM! spectroscopy. Static disorder, collective excitations, and superparamagnetic spin flips are all detected and their contributions quantified. Zero-field muon spin relaxation spectroscopy has been used to confirm these observations in one sample. A theoretical description of SEDM spectra in ...

Size distribution measurement of fine and ultrafine particle emission from cooking activities

Particle Identification with a Fine Sampling Ionization

Introduction charge collection) of Q 104. The drift field was chosen to give an electron drift velocity of 1 cm/usec. %1/5 the saturated velocity in this gas mixture. The volume of uniform field (adequate for longitudinal drift measurenents of dE/dx) extends to within +3 mm of the sense plane and +l mm of the cathode planes. Hence, in principle, 80% of the track length through a chamber of this...

The Isothermal Remanence of Fine Particle Systems

A numerical model based upon the "Stoner-Wohlfarth theory" has been developed to predict Isothermal Remanent Magnetisation (IRM) curves for a system of fine particles with uniaxial anisotropy. This paper reports the predictions of our model for the effects of easy axes alignment on the IRM curve. We have also investigated the effect of the standard deviation after the application of a non-satur...

Source apportionment of ambient fine particle

Introduction Conclusions References