WHATB IS FERMI DIRAC STATISTICS

In the year 1926  , Fermi and  Dirac used the Pauli's exclusion principle to modify the BE STATISTICS  and successfully explained the behaviour of free electrons in metals . Thus , Fermi Dirac statistics came in to existence .
Following are the assumptions of FD statistics -

1. The particles of the system are indistinguishable and identical .
2. Available volume of phase space cell can not be less than h3 where h is Planck's constant 
3. A phase space cell can not contain more than one particle .
4. The number of  phase space cell is large as compared with the number of particles , such that occupation index  is less than or equals to one .
5. The particles of the system obey Pauli's exclusion principle

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Posted By : Komal Rawat