A MICHELSON TWIN INTERFEROMETER FOR PRECISE MEASUREMENTS OF THE REFRACTIVE-INDEX OF GASES BETWEEN 100-K AND 1300-K

被引：26

作者：

HOHM, U ^{[1
]}

KERL, K ^{[1
]}

机构：

[1] TECH UNIV BRAUNSCHWEIG, INST PHYS & THEORET CHEM, HANS SOMMER STR 10, W-3300 BRAUNSCHWEIG, GERMANY

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 1990年 / 1卷 / 04期

关键词：

D O I：

10.1088/0957-0233/1/4/003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A Michelson twin interferometer is described, which is used for precise measurements of the refractive index n of gases in the visible wavelength range and temperatures between 100 K and 1300 K. The evacuated twin interferometer (length 2.4 m, diameter 90 mm) consists of two adjacent identical Michelson interferometers A and B, using the same beam splitter and mirrors. Interferometer A serves as the proper measuring interferometer with the gas sample cell in measuring beam 1 and the identical, but evacuated, reference cell in its reference beam 2. Interferometer B is used only for controlling the geometrical changes of the interferometer equipment during the refractive index measurements performed with interferometer A. Both the gas sample cell and the reference cell are made from quartz glass and thermostated. The construction of this very stable twin interferometer as well as the devices for gas pressure and temperature measurements are described in detail.

引用

页码：329 / 336

页数：8

共 15 条

[1] ELECTROMAGNETIC PROPERTIES OF COMPRESSED GASES [J].