Scattering by interstellar graphite dust analog

作者：Ahmed Gazi A^*; Gogoi Ankur

来源：Journal of Quantitative Spectroscopy and Radiative Transfer, 2014, 146: 106-112.

DOI：10.1016/j.jqsrt.2013.12.010

• Light scattering
• Dust particles
• Volume scattering function
• Degree of linear polarization
• Mie theory

The analysis of optical scattering data of interstellar carbonaceous graphite dust analog at 543.5 nm, 594.5 nm and 632.8 nm laser wavelengths by using an original laboratory light scattering setup is presented. The setup primarily consisted of a laser source, optical units, aerosol sprayer, data acquisition system and associated instrumentation. The instrument measured scattered light signals from 10 degrees to 170 degrees in steps of 1 degrees. The results of the measurements of the volume scattering function beta(theta) and degree of linear polarization P(theta) of the carbonaceous graphite dust particles that were sprayed in front of the laser beam by using an aerosol sprayer were subsequently compared with theoretically generated Mie plots with estimated parameters.

• 出版日期2014-10