p41_055 - E/kT , where E is the diFerence in the energies:...

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55. The number of atoms in a state with energy E is proportional to e E/kT ,where T is the temperature on the Kelvin scale and k is the Boltzmann constant. Thus the ratio of the number of atoms in the thirteenth excited state to the number in the eleventh excited state is n 13 n 11 = e
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Unformatted text preview: E/kT , where E is the diFerence in the energies: E = E 13 E 11 = 2(1 . 2 eV) = 2 . 4 eV. or the given temperature, kT = (8 . 62 10 2 eV / K)(2000 K) = 0 . 1724 eV. Hence, n 13 n 11 = e 2 . 4 / . 1724 = 9 . 10 7 ....
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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