Thermal Physics |
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Page 15
... number n ( ↓ ) of down spins is IN m . The total number of spins is n ( 1 ) + n ( ↓ ) = ( † N + m ) + ( ¿ N — m ) = N. The spin excess n ( ↑ ) — n ( ↓ ) ( † N + m ) − ( † N — m ) = 2m . If each spin has magnetic moment μ , the ...
... number n ( ↓ ) of down spins is IN m . The total number of spins is n ( 1 ) + n ( ↓ ) = ( † N + m ) + ( ¿ N — m ) = N. The spin excess n ( ↑ ) — n ( ↓ ) ( † N + m ) − ( † N — m ) = 2m . If each spin has magnetic moment μ , the ...
Page 60
... total energy of the system . The entropy is σ = log g ( U ) = log [ D ( U ) ... number of particles , 15 say 1022 , so that we may neglect the additive term ... total energy U and the total number of particles N are independent of time.16 ...
... total energy of the system . The entropy is σ = log g ( U ) = log [ D ( U ) ... number of particles , 15 say 1022 , so that we may neglect the additive term ... total energy U and the total number of particles N are independent of time.16 ...
Page 161
... total number of particles is the sum of the average number in each orbital . We convert the sum into an integral by using the result yπn2 dn for the number of orbitals with the translational quantum number n between n and n + dn . This ...
... total number of particles is the sum of the average number in each orbital . We convert the sum into an integral by using the result yπn2 dn for the number of orbitals with the translational quantum number n between n and n + dn . This ...
Contents
STATES OF THE MODEL SYSTEM | 11 |
AN ELEMENTARY SOLUBLE SYSTEM | 17 |
SHARP PEAK OF gN | 19 |
Copyright | |
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approximation Boltzmann bosons calculated Carnot cycle chemical potential classical regime closed system cm³ combined system concentration defined definition denote derivative diffusive contact dipole distribution function electric field electron energy levels ensemble entropy equal equation equilibrium ergs example expansion experimental Fermi energy Fermi gas Fermi-Dirac fermions Figure fluctuations flux fractional free energy free particle frequency gases given grand sum He¹ He³ heat capacity helium ideal gas law increase integral isothermal kinetic lattice liquid low temperature m₁ magnetic field magnetic moment model system molecule N₁ negative temperature number of accessible number of atoms number of particles occupied P₁ partition function photons plotted pressure probable configuration Problem properties quantity quantum number reservoir result spin excess superfluid system in thermal term thermal average thermal contact thermodynamic potential total number U₁ unit velocity versus volume white dwarf ат