A TIME-RESOLVED X-RAY-SCATTERING TECHNIQUE FOR OBSERVATION OF NON-EQUILIBRIUM PHONONS

被引：2
作者：
CHAPMAN, LD [1 ]
EHRLICH, SN [1 ]
LAZARZ, NM [1 ]
机构：
[1] PURDUE UNIV,SCH MAT ENGN,W LAFAYETTE,IN 47907
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 1990年 / 61卷 / 01期
关键词：
D O I：
10.1063/1.1141906
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We have demonstrated a time-resolved x-ray diffraction technique for observing nonequilibrium phonons. We have used this technique to observe phonons in α-quartz at low temperatures. Phonons were generated by direct stimulation of near zone center transverse-optical phonons using infrared light from a powerful Q switched CO2 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.
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页码：86 / 89
页数：4
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