Characterisation of dispersive systems using a coherer

Authors :: Nikolić Pantelija M.
Đurić S.
Radulović K.
Vasiljević-Radović D.
Nikolić M.V.
Ristić Momčilo M.
Source :: Science of Sintering, Vol 34, Iss 1, Pp 101-108 (2002)
Publication Year :: 2002
Publisher :: International Institute for the Science of Sintering, Beograd, 2002.
Abstract: The possibility of characterization of aluminium powders using a horizontal coherer has been considered. Al powders of known dimension were treated with a high frequency electromagnetic field or with a DC electric field, which were increased until a dielectric breakdown occurred. Using a multifunctional card PC-428 Electronic Design and a suitable interface between the coherer and PC, the activation time of the coherer was measured as a function of powder dimension and the distance between the coherer electrodes. It was also shown that the average dimension of powders of unknown size could be determined using the coherer.