Performance characteristics of a low temperature cell for collisional cooling experiments

被引：2

作者：

Ball, CD ^{[1
]}

DeLucia, FC ^{[1
]}

Risal, D ^{[1
]}

Ruch, A ^{[1
]}

Sheng, H ^{[1
]}

Abebe, Y ^{[1
]}

Farina, PA ^{[1
]}

Mantz, AW ^{[1
]}

机构：

[1] OHIO STATE UNIV,DEPT PHYS,COLUMBUS,OH 43210

来源：

APPLICATION OF TUNABLE DIODE AND OTHER INFRARED SOURCES FOR ATMOSPHERIC STUDIES AND INDUSTRIAL PROCESS MONITORING | 1996年 / 2834卷

关键词：

collisional cooling; diode laser; molecular spectroscopy; low temperature cell;

D O I：

10.1117/12.255315

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

We fabricated and tested a low temperature cell which is mounted directly on the second stage of a CTI-Cryogenics Model 22C CRYODYNE(R) CRYOCOOLER. The vacuum system consists of a room temperature vacuum shroud, a radiation shield maintained at 77K and the cell which is mounted directly to the second stage of the cryocooler. The ultimate cell temperature is 12.4 Kelvin, and the low temperature limit increases at a rate of 5.6 Kelvin/Watt. We achieve a cell temperature of 22 Kelvin under typical experimental conditions of approximately 29 milli Torr helium, slow flowing gas, and a heated injector. The absorption path length of the cell is 3.35 cm, and the window clear aperture is 1.27 cm. We performed a series of experiments in which we determined the translational temperatures of vibration-rotation transitions in the (1-0) band of CO for different cell temperatures. The results of our tests are discussed in this paper.

引用

页码：102 / 109

页数：8