Abstract
The phonon density of states was measured by observing the nuclear resonant fluorescence of Fe versus the energy of incident x rays from a synchrotron radiation beam. An energy resolution of 6 meV was achieved by use of high-resolution crystal optics for the incident beam. Extremely low background levels were obtained via time discrimination of the nuclear fluorescent radiation.
- Received 16 December 1994
DOI:https://doi.org/10.1103/PhysRevLett.74.3832
©1995 American Physical Society
