09 خرداد 1403
محمدرضا محبي فر

محمدرضا محبی فر

مرتبه علمی: دانشیار
نشانی: ملایر، کیلومتر 4 جاده اراک، دانشگاه ملایر، دانشکده علوم پایه، گروه فیزیک
تحصیلات: دکترای تخصصی / فیزیک-اپتیک
تلفن: +988132355404
دانشکده: دانشکده علوم پایه

مشخصات پژوهش

عنوان
Accurate Measurement of Thermo‑optical Parameters of Trichloromethane–Alcohol Mixtures by Laser Thermal Lens Spectroscopy
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Binary mixtures · Thermal lens spectroscopy · Thermo-optical parameters
سال
2021
مجله INTERNATIONAL JOURNAL OF THERMOPHYSICS
پژوهشگران محمدرضا محبی فر

چکیده

The laser thermal lens spectroscopy (TLS) was used to measure the thermo-optical parameters of alcohols(1)–trichloromethane(2) binary mixtures with high accuracy. Using this spectroscopic method, the thermal lens characteristic time (tc), thermal diffusivity (Dth), thermal conductivity (k), thermo-optic coefficient (dn/dT), and the refractive index changes with the sample deposited heat (dn/dQ) were measured for each of the pure components of this binary mixture at 298 K and fixed laser energy. The experimental results are in good agreement with the reference data. Then, for these binary mixtures, the dependency of k, dn/dT, and dn/dQ on the concentration was obtained and molecularly analyzed. The results show that increasing the volume fraction of alcohol in these binary mixtures leads to increasing k, dn/dT, and dn/dQ of these binary mixtures.