Zero-frequency refractivity of water vapor, comparison of Debye and van-Vleck Weisskopf theory.
We show that the zero-frequency, refractivity of water vapor calculated by the van-Vleck Weisskopf theory via a summation over all the water lines from 22.2 GHz to 30 THz can explain all of the previous measurements from 0.5 MHz to microwave, mm-waves and THz frequencies. This result removes a long standing discrepancy in comparisons of measurements and theory, and is in excellent agreement with experiments.
School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, USA. daniel.grischkowsky@okstate.edu
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D
Grischkowsky
Yihong
Y
Yang
Mahboubeh
M
Mandehgar