Barium Cloud Growth and Striation in a Conducting Background
Final technical rept. 15 Mar-15 Nov 1972
ROCHESTER UNIV NY
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Previous calculations of barium cloud growth failed to give reasonable estimates of striation scale size and onset time because they either assumed no ionospheric end-shorting or no ion diffusion all modes unstable or strong shorting all modes stable. The authors derive a set of equations which include finite end-shorting and solve by a new numerical technique. For moderate end-shorting in the experimental range a fastest growing mode of reasonable size on the rear of the cloud is obtained. The growth rates and instability range are very sensitive to the end-shorting and magnitude of the ambient electric field. There is no growth below a critical value of E or above a critical value of the shorting. A series of graphs are presented. The authors also derive most previous results as special cases of our equations.
- Atmospheric Physics