Preposition: in

• crystal: The first pulse momentarily perturbs the frequencies of the individual phonons in the crystal.

Adjective modifier

• acoustic: The faint lines, called Brillouin peaks, are caused by light being inelastically scattered by acoustic phonons in the glass.

• optical: Conventional systems rely on measuring Raman scattering by optical phonons.

Modifies a noun

• scattering: Thus the observed diffuse scattering can be assumed to be almost entirely from phonon scattering.

• dispersion: Where there is only one atom per unit cell, the phonon dispersion curves are represented only by acoustic branches.

• density: Use: Project the phonon density of states onto given sets of atoms.

• mode: The phonon mode band has been observed to differ in strength on various YBCO samples.

• frequency: The phonon frequency can be tuned by changing the frequency of one of the lasers.

• curve: Where there is only one atom per unit cell, the phonon dispersion curves are represented only by acoustic branches.

Noun used with modifier

• surface: In particular, the technique is suited to measurement of surface phonons and vibrational modes of adsorbates.

• diapason: Alternatives are included above - j.r. ) The only stop in this organ not enclosed is the diapason phonon on the great organ.