A laser pulse of energy 4 mJ and the pulse duration 1.5 ns is focused on a target of radius 0.02 mm. What is the laser intensity?

University Physics Volume 3
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Chapter7: Quantum Mechanics
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Problem 60P: If the ground state energy of a simple harmonic oscillator is 1.25 eV, what is the frequency of its...
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A laser pulse of energy 4 mJ and the pulse duration 1.5 ns is focused on a target of radius 0.02 mm. What is the laser intensity?

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