In laser eye surgery, the laser emits a 1.45-ns pulse focused on a spot that is 32.5 mm in diameter. (a) If theenergy contained in the pulse is 2.95 mJ, what is the power persquare meter (the irradiance) associated with this beam? (b) Suppose a molecule with a diameter of 0.500 nm is irradiated by thelaser beam. How much energy does the molecule receive in onepulse from the laser? (The energy obtained in part (b) is more thanenough to dissociate a molecule.)
In laser eye surgery, the laser emits a 1.45-ns pulse focused on a spot that is 32.5 mm in diameter. (a) If theenergy contained in the pulse is 2.95 mJ, what is the power persquare meter (the irradiance) associated with this beam? (b) Suppose a molecule with a diameter of 0.500 nm is irradiated by thelaser beam. How much energy does the molecule receive in onepulse from the laser? (The energy obtained in part (b) is more thanenough to dissociate a molecule.)
Chapter11: Combined Structure Problems
Section: Chapter Questions
Problem 24P
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Question
In laser eye surgery, the laser emits a 1.45-
ns pulse focused on a spot that is 32.5 mm in diameter. (a) If the
energy contained in the pulse is 2.95 mJ, what is the power per
square meter (the irradiance) associated with this beam? (b) Suppose a molecule with a diameter of 0.500 nm is irradiated by the
laser beam. How much energy does the molecule receive in one
pulse from the laser? (The energy obtained in part (b) is more than
enough to dissociate a molecule.)
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