Doppler-shifted acoustic cyclotron resonance in tungsten

Doppler-shifted cyclotron resonances have been observed acoustically in high purity tungsten single crystals. The resulting Fermi surface area derivatives agree generally with those obtained from magnetomorphic size effect experiments and with calculations based on an empirical model fitted to de Haas-van Alphen data. Certain non-central orbit zones of the latter model are modified to fit both sets of results. The resulting correction to the hole octahedron sheet is minimal, the modified electron jack has a more spherical shape, and the necks are slightly further away from the zone center. The dimensions of the re-parameterised model agree better with the results obtained from other Fermi surface measurements.