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An ensemble of 'N' three level systems with energies E = -E,,0,+Eo, is in thermal equilibrium at temperature 'T'. Let ß = 1÷KT, If BE, = 2, the probability of finding the system in the level E=0 is ----- ---- O 1/(1 + 2 Cosh 2)-1 O 1/Cosh 2 O 1/(2 Cosh 2)-1 0.5 Cosh 2

An ensemble of 'N' three level systems with energies E = -E,,0,+Eo, is in thermal equilibrium at temperature 'T'. Let ß = 1÷KT, If BE, = 2, the probability of finding the system in the level E=0 is ----- ---- O 1/(1 + 2 Cosh 2)-1 O 1/Cosh 2 O 1/(2 Cosh 2)-1 0.5 Cosh 2

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An ensemble of 'N' three level systems with energies E = -E,,0,+Eo, is in thermal equilibrium at temperature 'T'. Let ß = 1÷KT, If BE, = 2, the probability of finding the system in the level E=0 is ----- 1/(1 + 2 Cosh 2)-1 1/Cosh 2 1/(2 Cosh 2)-1 0.5 Cosh 2
Transcribed Image Text:An ensemble of 'N' three level systems with energies E = -E,,0,+Eo, is in thermal equilibrium at temperature 'T'. Let ß = 1÷KT, If BE, = 2, the probability of finding the system in the level E=0 is ----- 1/(1 + 2 Cosh 2)-1 1/Cosh 2 1/(2 Cosh 2)-1 0.5 Cosh 2
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