Nonadiabatic scanning calorimeter
作者:
Haruhiko Yao,
Kenji Ema,
Carl W. Garland,
期刊:
Review of Scientific Instruments
(AIP Available online 1998)
卷期:
Volume 69,
issue 1
页码: 172-178
ISSN:0034-6748
年代: 1998
DOI:10.1063/1.1148492
出版商: AIP
数据来源: AIP
摘要:
A high-resolution computerized calorimeter capable of fully automatic operation in either ac or relaxation modes is described. Emphasis is given to a new version of the relaxation technique in which the heater power is ramped linearly in time. This improvement results in superior performance and convenience in studying both first- and second-order phase transitions and allows quantitative evaluation of latent heats as well as pretransitional heat capacity variations. Examples are given for the use of this calorimeter in the study of liquid crystal phase transitions. ©1998 American Institute of Physics.
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