holder

The following is an abstract for the selected article. A PDF download of the full text of this article is available here. Members may download full texts at no charge. Non-members may be charged a small fee for certain articles.


Equipment for High-Pressure Infrared Measurements

Volume 24, Number 1 (Feb. 1970) Page 21-27

Fang, C.S.; Fox, J.V.; Mauk, C.E.; Prengle, H.W.


Since vibrational frequency shifts in liquids, produced by solvents and/or high liquid densities, are relatively small, precision equipment and techniques must be used. Design and operation of modified equipment, including a long path grating monochromator, a pressuring system and cells for pressures up to 5000-10000 atm are described. A static measurement technique, involving precise positioning of the grating and read out of the transmittance on a digital voltmeter, followed by computer processing of the series of points which describe the absorption peak to determine the ν0, are also described. Experimental data on C=C vibration on cis-pentene-2 are presented to illustrate results.