• Laser & Optoelectronics Progress
  • Vol. 53, Issue 1, 12901 (2016)
Zhao Guanjia1、2、*, Bi Shengshan2, and Wu Jiangtao2
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
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    DOI: 10.3788/lop53.012901 Cite this Article Set citation alerts
    Zhao Guanjia, Bi Shengshan, Wu Jiangtao. Development of Light Scattering System for Transport Properties Measurement[J]. Laser & Optoelectronics Progress, 2016, 53(1): 12901 Copy Citation Text show less

    Abstract

    Based on the light scattering theory, a new apparatus for transport properties measurement is built. The apparatus consists of two systems which are surface light scattering system and dynamic light scattering system, for measuring the surface and bulk properties of liquid, respectively. By a proper optical design, the two system can share the key devices, including the laser, single photon detector and digital correlator, and also the high pressure vessel. The whole system is designed and allowed to work at the pressure of 0~10 MPa and the temperatures between 283 K and 400 K with a stability better than ±1 mK/h. Since the frequencies of capillary waves are much smaller than that of laser light, optical mixing technique and heterodyne scheme are used to extract physical information. For checking the accuracy and reliability of the system, liquid surface tension, viscosity of heptane, thermal diffusion coefficient and specific heat capacity of R134a are measured. The deviations between experimental values and reference data are 2.29%, 0.57%, 0.12%, 0.06%, respectively. The total uncertainty for the measurement of surface tension, viscosity, thermal diffusion coefficient and specific heat capacity are estimated to be 1%, 2%, 2%, 4.6% (k=2), respectively.
    Zhao Guanjia, Bi Shengshan, Wu Jiangtao. Development of Light Scattering System for Transport Properties Measurement[J]. Laser & Optoelectronics Progress, 2016, 53(1): 12901
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