1. See Steve Fetter and Frank von Hippel, ‘The Hazard from Plutonium Dispersal by Nuclear-warhead Accidents’, Science and Global Security, vol. 2 (1990).
2. David W. Hafemeister, ‘Infrared Monitoring of Nuclear Power in Space’, Science and Global Security, vol. 1 (1989) p. 109; and Joel Primack, Philip Pinto and Oleg Prilutsky, ‘Detection of Space Reactors by their Gamma and Positron Emissions’, ibid, p. 129.
3. G. H. Share, J. D. Kurfess, K. W. Marlow and D. C. Messina, ‘Geomagnetic Origin for Transient Particle Events from Nuclear Reactor-Powered Satellites’. Science, vol. 244 (1989) p. 444.
4. John D. Morrocco, ‘soviet Ground Lasers Threaten U.S. Geosynchronous Satellites’, Aviation Week and Space Technology, 2 November 1987, p. 27.
5. The simplest type of adaptive optics to understand involves the replacement of the mirror of the beam director with many small mirrors which can be moved forward or backward by servomotors by distances on the order of the wavelength of the laser light being reflected. In this way, the laser beam wavefront can be distorted in a way that will just offset the distortions that atmospheric turbulence will introduce during the beam’s transit through the atmosphere. (See, for example, Horace W. Babcock, ‘Adaptive Optics Revisited’, Science, vol. 249 (1990) p. 253.)