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Recalling that the Fermi-Dirac distribution function applies to all fermions, in

ID: 1973648 • Letter: R

Question

Recalling that the Fermi-Dirac distribution function applies to all fermions, including protons and neutrons, each of which have spin 1/2, consider a nucleus of 22Ne consisting of 10 protons and 12 neutrons. Protons are distinguishable from neutrons, so two of each particle (spin up, spin down) can be put into each energy state. Assuming that the readius of the 22Ne nucleus is 3.1 x 10-15 m, estimate the Fermi energy and the average energy of the nucleus in 22Ne. Express your results in MeV. Do the results seem reasonable?

Explanation / Answer

Ef(protons)=516MeV =310MeV Ef(neutrons)=742MeV =445MeV

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