The power supply for a pulsed nitrogen laser has a 0.0050- m F capacitor with a

Question

The power supply for a pulsed nitrogen laser has a 0.0050-mF capacitor with a maximum voltage rating of 30 kV.  Estimate how much energy could be stored in this capacitor. If 12% of this stored electrical energy is converted to light energy in a pulse that is 8.0 microseconds long, calculate the power of the laser pulse.

The power supply for a pulsed nitrogen laser has a 0.0050-mF capacitor with a maximum voltage rating of 30 kV. Estimate how much energy could be stored in this capacitor. If 12% of this stored electrical energy is converted to light energy in a pulse that is 8.0 microseconds long, calculate the power of the laser pulse.

Explanation / Answer

E= 0.5*C*V^2

==> E=0.5*0.005E-6*(30000)^2 = 2.25 J

now power = E/t

==> power =12% of 2.25J/(68E-6)= 0.12*2.25/(8E-6) = 33750 W

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