Optical constants of ice Ih crystal at terahertz frequencies

Zhang, Chun; Lee, Kwang-Su; Zhang, X.-C.; Wei, Xing; Shen, Y. R.
July 2001
Applied Physics Letters;7/23/2001, Vol. 79 Issue 4
Academic Journal
Terahertz time-domain spectroscopy was used to measure the refractive indices of Ih crystalline ice in the frequency range of 0.25–1.0 THz. With increasing frequency, the real part, n[sup ′], of the refractive index increases from 1.787 to 1.793 at 243 K, and the imaginary part, n[sup ″], increases from 0.005 to 0.020. The temperature dependence of n[sup ′] is less than 0.01%/K and that of n[sup ″] is ∼1%/K. Our results connect smoothly to the data of Matsuoka and co-workers [T. Matsuoka, S. Fujita, and S. Mae, J. Appl. Phys. 80, 5884 (1996)] in the microwave range and the data in the far IR range, and can be well described by the existing theoretical models. © 2001 American Institute of Physics.


Related Articles

  • Characterization of ice crystals in clouds by simple mathematical expressions based on successive.. Wang, Pao K. // Journal of the Atmospheric Sciences;8/1/97, Vol. 54 Issue 15, p2035 

    Presents a study which used elementary mathematical functions to discuss the two-dimensional characterization of planar hexagonal ice crystals. Outline of the mathematical description of columnar crystals; Results of the study.

  • The theoretical basis for the parameterization of ice crystal habits: Growth by vapor deposition. Chen, Jen-Ping; Lamb, Dennis // Journal of the Atmospheric Sciences;5/1/94, Vol. 51 Issue 9, p1206 

    Analyzes surface kinetic and gas-phase diffusional effects which enable the specification of growth rates and habits of ice crystals. Factors determining the primary and secondary crystal habits; Application of adaptive parameterization in a microphysical model; Mass-dimension relationship in...

  • Did You Know???  // Junior Scholastic;4/10/2006, Vol. 108 Issue 16, p4 

    The article reports that the pictures sent from Saturn planet show plumes of ice crystal which indicates the presence of water over there.

  • Numerical simulation of three-dimensional unsteady flow past ice crystals. Wang, Pao K.; Ji, Wusheng // Journal of the Atmospheric Sciences;9/15/97, Vol. 54 Issue 18, p2261 

    Presents a study on the ice crystals in relation to flow fields. Application of a quadratic interpolation for convective kinematics (QUICK) scheme and a predictor-corrector method; Details on the ice crystals being fixed in orientation; Features of the flow passing of the crystals; Results of...

  • Look Out Below!  // Scholastic News -- Edition 4;02/14/2000, Vol. 62 Issue 17, p3 

    Provides information on the ice balls that fell across Spain in January 2000.

  • The definition and significance of an effective radius for ice clouds. McFarquhar, Greg M.; Heymsfield, Andrew J. // Journal of the Atmospheric Sciences;6/1/98, Vol. 55 Issue 11, p2039 

    Provides information on differences in the definition of `effective' radius (re) of the ice crystal population, investigating the single scattering shortwave properties of ice clouds. Definition of re for liquid drops and for ice crystals; Information on vertically homogeneous clouds; Meaning...

  • Whale of a Hail Ball.  // Scholastic News -- Edition 4;9/8/2003, Vol. 66 Issue 2, p3 

    Presents the picture of the biggest piece of hail on ice discovered in Aurora, Nebraska in 2003. Measurement of the hail; Information on hail.

  • SCM Simulations of Tropical Ice Clouds Using Observationally Based Parameterizations of Microphysics. McFarquhar, Greg M.; Iacobellis, Sam; Somerville, Richard C. J. // Journal of Climate;Jun2003, Vol. 16 Issue 11, p1643 

    A new bulk parameterization of the dependence of ice cloud effective radius (r[sub e] ) on ice water content (IWC) is developed using in situ observations of the size and shape of ice crystals in tropical anvils. This work extends previous parameterizations because information about the number,...

  • Ice, Ice Baby.  // Jacksonville Magazine;Jun2014, p172 

    The article suggests using ice with sphere shape because it is better than a cube if one wants less dilution.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics