High-power lasers are used to compress a plasma (a gas of charged particles) by

Question

                    High-power lasers are used to compress a plasma (a gas of charged particles) by radiation pressure. A laser generating radiation pulses with peak power 1900 MW                     is focused onto 1.3 mm2 of high-electron-density plasma. Find the pressure exerted on the plasma if the plasma reflects all the light beams directly                     back along their paths.                 

                                     Please show work and type out the final answer

Explanation / Answer

Pressure exerted = P = 2* I / C = 2 * P / C * A.

P = ( 2 * 1900 * 10^6 ) / (3*10^8 * 1.3 * 10^-6 ) Pa = 9.74 * 10^6Pa

Hence pressure exerted on plasma is 9.74*10^6 Pa.

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