Statistical Mechanics: Ideal Gas of Oxygen Atoms in Equilibrium

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The discussion focuses on determining whether to apply classical or quantum statistics to an ideal gas of oxygen atoms in equilibrium with absorbed atoms on a surface. The system is characterized by specific parameters, including energy levels and temperature. The equation presented incorporates both Fermi-Dirac and Bose-Einstein statistics, suggesting a need for generality in analysis. It is noted that in the classical limit, quantum statistics reduce to classical statistics. Ultimately, the decision hinges on the relationship between the energy difference and thermal energy, guiding the choice between classical and quantum statistical mechanics for this scenario.
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Consider an ideal gas of oxygen atoms in equilibrium with oxygen atoms absorbed on a planar surface. here are N_s sites per unit surface area at which the atoms can be absorbed, and the energy of an absorbed atom is -e compared to one in the free state. The system is under 1 atm and at 300K.

Should the atoms be described by classical statistics or quantum statistics? I need to show this qualitatively and here's what I have:

\frac{1}{e^{(\epsilon-\mu)/kT} \pm 1}
In the classical limit, \epsilon-\mu&gt;&gt;kT[/tex]<br /> <br /> But we do not know what e is, or mu. Not sure where to go from here, any hints physics forums?
 
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Your equation encompasses both Fermi-Dirac and Bose-Einstein statistics because you have a +/- sign in there. Look up both Fermi-Dirac and Bose-Einstein statistics to find out the differences.
 
badphysicist said:
Your equation encompasses both Fermi-Dirac and Bose-Einstein statistics because you have a +/- sign in there. Look up both Fermi-Dirac and Bose-Einstein statistics to find out the differences.

Exactly, since quantum statistics becomes Boltzmann maxwell statistics at the classical limit, so I have the +/- for generality. Thus, regardless of a BE or FD distribution, taking the classical limit will give back classical stat.

Now, the question is, do I use classical statmech or quantum statmech for this problem?
 
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