DEVELOPMENT OF AC CALORIMETRIC METHOD FOR THERMAL-DIFFUSIVITY MEASUREMENT .5. MODULATED LASER-BEAM IRRADIATION

被引：21
|
作者：
KATO, R [1 ]
MAESONO, A [1 ]
HATTA, I [1 ]
机构：
[1] NAGOYA UNIV,DEPT APPL PHYS,CHIGUSA KU,NAGOYA 46401,JAPAN
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1993年 / 32卷 / 08期
关键词：
THERMAL DIFFUSIVITY; THERMOPHYSICAL PROPERTIES; AC CALORIMETRY; AC TEMPERATURE WAVES; LASER;
D O I：
10.1143/JJAP.32.3656
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In an ac light-irradiation method for measuring thermal diffusivity along the length of the rectangular thin film sample, we developed a method which uses a modulated laser beam. The laser beam was swept with a high frequency so as to cover the width of the sample. Such a procedure makes possible to obtain uniform ac thermal energy distribution in the direction perpendicular to the direction of ac temperature-wave propagation. Furthermore, it gives rise to a nonuniform ac thermal energy distribution in the direction along the direction of ac temperature-wave propagation. It is theoretically proven that the latter inhomogeneity does not affect the determination of thermal diffusivity. This fact is verified by experiment.
引用
收藏
页码：3656 / 3658
页数：3
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