Question

The NOVA laser at Lawrence Livermore National Lab produces a burst of energy (E] - 40-kJ in a short time duration [8t) - 3.5 ns, with a wavelength of [2] - 351 nm. How many atoms [Na] made a transition from the excited state to the ground state in order to create this pulse? - A Na = 4.4 x 1023 B. No = 7.1 x 1022 c No=2.1 x 1031

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Answer 1

E = 40K I in 3.sns .E in 40 11000 3.5xiot 1.1428576109? ) Now, hc) m 1.1428574103 = Nh+ 6.83x1034 43410f 351X10-9 - NEW 1.1428574351 X10 6.63+3+10-26 NA 31 2.1K0

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