William Swider

• Calculated and measured HF/VHF absorption for the 2-5 November 1969 solar proton event
• Composite PCA '69 study
• D-region ionization rates for the 2 to 5 November 1969 PCA event as determined from satellite proton flux measurements
• Ion composition measurements of the disturbed and quiet D-region in 1980-1981
• On formulating a simple D-region model
• On the accuracy of certain approximations for the Chapman function
• Scientific report on "Sunrise geometry and the optical depth factor"
• Steady-state multi-ion disturbed D-region model
• Sunrise E-region enhancements from aurorally increased NO