... Abbott, J. Munch, and X C. Zhang, Label-free bioaffinity detection using terahertz technology, Physics in Medicine and Biology (IOP), Vol. 47, No. 21, pp. 378 9- 379 5 (2002). [7] S.P. Mickan, ... Phys. Lett., Vol. 70 , No. 14, pp. 178 4- 178 6 (19 97) . [38] W. L. Faust, and C. H. Henry, Mixing of Visible and Near-Resonance Infrared Light in GaP, Phys. Rev. Lett., Vol. 17, No. 25, pp. 1265–1268 ... densities of neutral atoms and molecules and increasing intensity of ionizing solar ultra-violet radiation with increasing altitudes, gives a maximum plasma density during daytime in the F-region at...