In: Physics
a) Consider three common types of phonon spectroscopy, Raman spectroscopy, Brillouin spectroscopy and inelastic neutron scattering. Describe the differences between the three techniques in terms of the following variables and comment briefly on the limitations of each technique as a consequence of these differences.
i) The phonon wavevector range probed by each technique.
ii) The range of energy transfers to be probed by each technique.
iii) The momentum (wavenumber) resolution of each technique.