Estimation of Grain Size in Randomly Packed Granular Material Using Laser-Induced Breakdown Spectroscopy

نویسندگان

چکیده

Grain size is one of the most important physical parameters for randomly packed granular (RPG) materials. Its estimation, especially in situ, plays a key role many natural and industrial processes. Here, application laser-induced breakdown spectroscopy (LIBS) was investigated experimentally to estimate grain RPG The experiment performed by taking sieved copper microspheres with discrete median diameters ranging from 53 357 ?m as examples measuring plasma emissions induced 1064 nm laser pulses duration 7 ns an air environment. It found that emission measurements were successful estimating diameter via monitoring variations temperature (electron density) at range below (above) critical value. In addition, it demonstrated that, when serves indicator size, intensity ratio between two spectral lines different upper energy levels same emitting species can be used alternative higher sensitivity. results show potential using LIBS situ estimation materials first time.

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ژورنال

عنوان ژورنال: Chemosensors

سال: 2022

ISSN: ['2227-9040']

DOI: https://doi.org/10.3390/chemosensors10040144