These assume that Cp, P and a are constant and that the entire energy heats up only the small surficial layer 6 ■ a (absorptance) definitely increases with temperature and has significant effect. Intensity can be replaced by: The term on the left mainly relates to laser characteristics and parameters and on the distance R from the object. Replacing this by F* which has dimensions of power per unit area we have: Equations (A4), (A10), (All) and (Alla) will be used in our calculations. REFERENCES [1] President Reagan, Speech on Defense Spending and Defensive Technology— Administration of Ronald Reagan, 23 March 1983, Weekly Compilation of Presidential Documents, 19, 12, 28 March 1983, pp. 423-66. [2] Strategic Defense Initiative, Defense Technology Study, Washington, DC, April 1984. [3] Union of Concerned Scientists, Space Based Missile Defence (Cambridge, MA., March 1984). [4] ‘Proposed US Anti-Missile system: Its prospects and possible impact on military and political situation in the world'—A Report of the Soviet Scientists' Committee for the Defence of Peace Against Nuclear Threat (Space Research Institute, USSR Academy of Sciences, 1983, in Russian). [5] Stanford CISAS The Reagan Strategic Defense Initiative—A Technical, Political and Arms Control Assessment (Stanford Centre for International Security and Arms Control, Stanford, CA, 1984). [6] OTA Directed Energy Missile Defense in Space (Background paper, Washington, DC, US Congress, Office of Technology Assessment, 1985). [7] American Physical Society, The Science and Technology of Directed Energy Weapons (Report of the American Physical Society Study Group, April 1987). [8] Velikhov, H., Sagdeev, R. & Kokozhin, A. Weaponry in Space: the Dilemma of Security (Moscow, MIR Publishers, 1986).
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