Performance characteristics of a low-temperature cell for collisional cooling experiments

Christopher D. Ball; Frank C. De Lucia; Dipesh Risal; Alan Ruch; Hua Sheng; Yilma Abebe; Paula A. Farina; Arlan W. Mantz

doi:10.1117/12.255315

21 October 1996 Performance characteristics of a low-temperature cell for collisional cooling experiments

Christopher D. Ball, Frank C. De Lucia, Dipesh Risal, Alan Ruch, Hua Sheng, Yilma Abebe, Paula A. Farina, Arlan W. Mantz

Author Affiliations +

Proceedings Volume 2834, Application of Tunable Diode and Other Infrared Sources for Atmospheric Studies and Industrial Process Monitoring; (1996) https://doi.org/10.1117/12.255315
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

We fabricated and tested a low temperature cell which is mounted directly on the second stage of a CTI-Cryogenics Model 22C CRYODYNE 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 preformed a series of experiments in which we determined the translational temperatures of vibration- rotation transitions in the band of CO for different cell temperatures. The results of our tests are discussed in this paper.

Citation Download Citation

Christopher D. Ball, Frank C. De Lucia, Dipesh Risal, Alan Ruch, Hua Sheng, Yilma Abebe, Paula A. Farina, and Arlan W. Mantz "Performance characteristics of a low-temperature cell for collisional cooling experiments", Proc. SPIE 2834, Application of Tunable Diode and Other Infrared Sources for Atmospheric Studies and Industrial Process Monitoring, (21 October 1996); https://doi.org/10.1117/12.255315

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