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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 ...

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

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 ...

4. Advances in Cryocoolers
Published: 12/1/1997
Author: Ray Radebaugh

5. Analysis of Mass Flow Rates and Energy Flow Rates in an Orifice Pulse Tube Refrigerator
Published: 12/1/1999
Authors: F Kuriyama, Ray Radebaugh

6. 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 ...

7. 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

8. Characterization of Inertance Tubes Using Resonance Effects
Published: 6/14/2006
Authors: Michael A Lewis, Peter E Bradley, Ray Radebaugh, Zhihua Gan
Abstract: Inertance tubes can be characterized by their inertance, compliance, and resistance. All three of these impedance components are present during normal measurements of inertance tube impedance. As a result, in comparing experimental results with model ...

9. Crycoolers and High-T^dc^ Devices
Published: Date unknown
Author: Ray Radebaugh
Abstract: This chapter reviews various methods and their operating principles for producing cryogenic temperatures. The use of liquid cryogens for laboratory studies of superconducting electronic devices is a common practice. That technique is mentioned brie ...

10. Cryocoolers: State of the art and recent developments
Published: 3/31/2009
Author: Ray Radebaugh
Abstract: Cryocooler performance and reliability are continually improving. Consequently, they are more and more frequently implemented by physicists in their laboratory experiments or for commercial and space applications. The five types of cryocoolers most ...

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