A time-resolved x-ray scattering technique for observation of non-equilibrium phonons

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Review of Scientific Instruments; (USA)

DOI:https://doi.org/10.1063/1.1141906· OSTI ID:6910112

Chapman, L D ^[1]; Ehrlich, S N ^[2]; Lazarz, N M ^[3]

---

1. National Synchrotron Light Source, Brookhaven National Lab, Upton, New York 11973 (US)
2. School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907 (USA)
3. National Synchrotron Light Source, Brookhaven National Lab, Upton, New York 11973 (USA)

We have demonstrated a time-resolved x-ray diffraction technique for observing nonequilibrium phonons. We have used this technique to observe phonons in {alpha}-quartz at low temperatures. Phonons were generated by direct stimulation of near zone center transverse-optical phonons using infrared light from a powerful {ital Q} switched CO{sub 2} laser. We show data taken at a Brillouin zone boundary confirming the presence of nonequilibrium phonons initially generated by the laser and their resulting decay products.

• DOE Contract Number: FG02-85ER45183; AC02-76CH00016
• OSTI ID: 6910112
• Journal Information: Review of Scientific Instruments; (USA), Vol. 61:1; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
47 OTHER INSTRUMENTATION
PHONONS
DETECTION
QUARTZ
BRILLOUIN ZONES
TIME RESOLUTION
X-RAY DIFFRACTION
CHALCOGENIDES
COHERENT SCATTERING
DIFFRACTION
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
QUASI PARTICLES
RESOLUTION
SCATTERING
SILICON COMPOUNDS
SILICON OXIDES
TIMING PROPERTIES
ZONES
360603* - Materials- Properties
440800 - Miscellaneous Instrumentation- (1990-)