PYROELECTRIC SINGLE-CRYSTAL ADSORPTION MICROCALORIMETRY AT LOW-TEMPERATURES - OXYGEN ON NI(100)

被引：29
|
作者：
DIXONWARREN, SJ [1 ]
KOVAR, M [1 ]
WARTNABY, CE [1 ]
KING, DA [1 ]
机构：
[1] UNIV CAMBRIDGE, DEPT CHEM, CAMBRIDGE CB2 1EW, ENGLAND
来源：
SURFACE SCIENCE | 1994年 / 307卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1016/0039-6028(94)90363-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The prototype single crystal adsorption microcalorimeter developed in our laboratory utilises remote temperature sensing by infrared radiation and is currently restricted to substrates at room temperature. A new pyroelectric detection scheme has now been developed which can be used at low substrate temperatures. The first low temperature calorimetric results are presented, for oxygen on Ni{100}, together with sticking probability measurements. Significant differences are observed between substrate temperatures of 100 and 300 K; these are discussed in terms of differences in precursor mobility and 0 adatom distribution in the adlayers.
引用
收藏
页码：16 / 22
页数：7
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