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1. 120Hz Pulse Tube Cryocooler for Fast Cooldown to 50K
Published: 2/13/2007
Authors: Srinivas Vanapalli, Michael A Lewis, Zhihua Gan, Ray Radebaugh
Abstract: A pulse tube cryocooler operating at 120 Hz with 3.5 MPa average pressure achieved a no-load temperature of about 49.9 K and a cooldown time to 80 K of 5.5 minutes. The net refrigeration power at 80 K was 3.35 W with an efficiency of about 22.6% of C ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50469

2. 3-D Flow Model for Cryocooler Regenerators
Published: 12/1/1997
Authors: J S Nigen, Y Yaron, K C Karki, S V Pantankar, Ray Radebaugh
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100454

3. A Cryogenic Catheter for Treating Heart Arrhythmia
Published: 6/1/1998
Authors: E D. Marquardt, Ray Radebaugh, J Dobak
Abstract: Progress in the development of a cryogenic catheter to treat heart arrhythmia is discussed. This system uses a mixed-gas Joule-Thomson refrigerator to cool the tip of a catheter that cen be indserted into the body through the large ceins leading int ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831721

4. A Half Century of Cryogenics and CSA
Published: 5/5/2014
Author: Ray Radebaugh
Abstract: 1964 seems just like yesterday to me, yet it was 50 years ago. The Cryogenic Society of America (CSA) was born that year, and I was just beginning my professional career in cryogenics. Because I have been active in cryogenics for all these past 50 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915924

5. A Polyimide Micro Heat Exchanger With a Suspended 3D Parallel Channel Structure for Cryogenic Application
Published: 11/11/2011
Authors: Yunda Wang, Ryan John Lewis, Mu Hong Lin, Yiwei Yan, Ray Radebaugh, Peter E Bradley, Yung-Cheng Lee
Abstract: A heat exchanger (HX) plays an important role in many cryogenic systems. This paper demonstrates a fully integrated fabrication process to make a novel monolithic polyimide micro heat exchanger. The structure of this heat exchanger consists of two p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909139

6. Advances in Cryocoolers
Published: 12/1/1997
Author: Ray Radebaugh
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100461

7. Analysis of Mass Flow Rates and Energy Flow Rates in an Orifice Pulse Tube Refrigerator
Published: 12/1/1999
Authors: F Kuriyama, Ray Radebaugh
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100713

8. Analysis of Mass Flow Rates and Energy Flow Rates in an Orifice Pulse Tube Refrigerator
Published: 1/1/1999
Authors: F Kuriyama, Ray Radebaugh
Abstract: The curves of mass flow rates and temperatures as a function of time have a different shape from those for pressure in an orifice pulse tibe refrigerator. The relationship among them is analyzed to explain the distortion of mass flow rate and temper ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831711

9. Application of the Periodic Temperature Variation Technique to the Measurement of Heat Transfer Coefficients in High-NTU Matrices
Published: 12/1/1997
Authors: J A Ramirez, K D Timmerhaus, Ray Radebaugh
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100462

10. CALCULATED REGENERATOR PERFORMANCE AT 4 K WITH HELIUM-4 AND HELIUM-3
Published: 3/16/2008
Authors: Ray Radebaugh, Yonghua Huang, Agnes O¿Gallagher, John Gary
Abstract: The helium-4 working fluid in regenerative cryocoolers operating with the cold end near 4 K deviates considerably from an ideal gas. As a result, losses in the regenerator, given by the time-averaged enthalpy flux, are increased and are strong functi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50594



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