## Proceedings of the International School of Physics "Enrico Fermi.", Volume 22N. Zanichelli, 1963 - Nuclear physics |

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Page 145

41) four

, L-TMjlo, (216)

-ll.J'M-llo, (217)

41) four

**ranges**can be distinguished (215)**range**I for log Ax/>M < log —' 8 = 10.8, L-TMjlo, (216)

**range**II for 10.8 = log *1*8 < log K,pM < log f'^f' = 14.4 , L^Mj,o, -O-ll.J'M-llo, (217)

**range**III for 14.4 = log < log KxpM< log K>^*U = 19 ^ (218) ...Page 146

greater part of

219) [FM]« =[(p; v;>] + [pa and (206) [p;i = [v.;,] . Over a large part of

charge of the F*c centres is compensated by electrons (e') and not by V„.

greater part of

**range**II the following two relations hold to a good approximation : (219) [FM]« =[(p; v;>] + [pa and (206) [p;i = [v.;,] . Over a large part of

**range**III thecharge of the F*c centres is compensated by electrons (e') and not by V„.

Page 148

, giving for the length of

formulae (214), (218) and (223) with (224), (226) and (227) one sees that for the

...

**Range**IV, as may be easily calculated, then begins at (226) log K,pM = log [FJUX, giving for the length of

**range**III (227) A log pH = log [FJ^KJK&K, . Comparingformulae (214), (218) and (223) with (224), (226) and (227) one sees that for the

...

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absorption acceptor approximation assumed band edge band structure Brillouin zone calculated carrier centre charge Chem coefficient components compound concentration conduction band consider constant corresponding crystal curves cyclotron resonance degenerate density diffusion direct transition discussed donor doping effective mass electric field energy gap energy surfaces equation equilibrium example exciton experimental expression Faraday rotation foreign atoms free electron frequency germanium given hence holes imperfections impurity indium antimonide InSb interaction interband ionization ions Journ lattice levels linear liquid magnetic field matrix measurements melt mobility momentum obtained optical p-type phonon Phys potential pressure quantum range reciprocal lattice region samples scattering semiconductors shown in Fig spherical spin spin-orbit structure elements symmetry tensor theory thermodynamic thermodynamic potentials tion transverse valence band valley Voigt effect wave functions wave vector Zeeman effect zero zone