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High-Spin State Suggests Unconventional Superconductivity

In an ordinary superconductor, electrons carry a spin of one-half and pair up and flow uninhibited with the help of vibrations in the atomic structure. The theory is well tested and can describe the behavior of most superconductors, but new research from the University of Maryland and its collaborators reports...
April 17, 2018
News

Currents of Spin Detected in Superconductor

Researchers from the University of Cambridge have shown that certain superconductors can also carry currents of spin, a result that could lead to a revolution in high-performance computing, according to the team, by dramatically reducing energy consumption.
April 16, 2018
News

US and India Expand Partnership in Search of Neutrinos

Scientists from the United States and India have a long history of scientific collaboration—including the discovery of the top quark— and now US Secretary of Energy Rick Perry and India’s Atomic Energy Secretary Dr. Sekhar Basu have signed an agreement to expand cutting-edge neutrino science projects underway in both countries.
April 16, 2018
News

MiniBooNE Probes the Nucleus with Muon Neutrinos

Scientists working on the MiniBooNE experiment at Fermi National Accelerator Laboratory (CSA CSM) report that they were able to identify exactly-known-energy muon neutrinos hitting the atoms at the heart of the particle detector. The result, published in Physical Review Letters, eliminates a major source of uncertainty when testing theoretical models...
April 10, 2018
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IARPA Moving Forward with SuperTools Project

The Intelligence Advanced Research Projects Activity (IARPA) has announced research contracts for its “SuperTools” program, a multi-year research effort to develop comprehensive software tools for designing and analyzing superconducting electronics circuits.
March 15, 2018

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Latest in Defining Cryogenics
Defining Cryogenics

Dewar

A dewar is a type of cryostat named after Sir James Dewar, the researcher who first developed the concept of a vacuum insulated container with silvered walls to reflect thermal radiation. Dewar was the first to liquefy hydrogen, and he created the device to store his discovery. The thermos bottle...
June 18, 2018
Defining Cryogenics

Stirling and Gifford-McMahon Cryocoolers

Stirling and Gifford-McMahon (GM) cryocoolers are two of the most commonly used cryocoolers in cryogenics. Both devices have a significant industrial base and operate at a wide range of temperatures and capacities. The thermodynamic cycles for both of these cryocoolers are quite similar. The Stirling cycle consists of a compressor,...
May 2, 2018
Defining Cryogenics

Liquefied Natural Gas (LNG)

A significant commercial application of cryogenics is the liquefaction, transport and storage of natural gas. Liquefied Natural Gas (LNG) is generally 95 percent methane with a few percent ethane and much lower concentrations of propane and butane. LNG liquefies at 111.6 K. Unlike many applications of cryogenics, the motivation for...
March 6, 2018
Latest in Cryo Central
Cryo Central

Cryogenic Treatment of Materials

F.J. Diekman Controlled Thermal Processing, Inc. info@metal-wear.com Cryogenic Processing (also called cryogenic treatment, and incorrectly “cryogenic tempering”) is a process that uses cryogenic temperatures to modify materials to enhance their performance. Cryogenic Processing involves the slow reduction in temperature of the material to at least -300°F (-185°C) and holding the...
April 18, 2008
Cryo Central

Cryogenics in Space

Peter Kittel University of California-Berkeley pkittel@cal.berkeley.edu Space Cryogenics is the application of cryogenics to space missions. These applications fall into two broad areas, supporting space science missions and supporting the space transportation infrastructure. Science applications: The atmosphere is opaque to much of the electro-magnetic spectrum. In space, the absence of...
April 18, 2008
Cryo Central

Cryosurgery

Review of Cryosurgery Boris Rubinsky, PhD Hebrew University School of Science and Engineering Research Center for Biomedical Engineering 78b Ross Building Givat Ram, Jerusalem 91904 Israel rubinsky@cs.huji.ac.il as published in Annual Review of Biomedical Engineering, August 2000, Vol. 2, pp. 157-187. Abstract: Cryosurgery is a surgical technique that employs freezing...
April 18, 2008
Cryo Central

Liquefied Natural Gas

Liquefied Natural Gas as it relates to the Field of Cryogenics John W. Bonn VJ Systems, LLC johnbonn@vjsystems-lic.com Today the world is looking for a cleaner fuel and Liquefied Natural Gas (LNG) plays a large part in achieving this goal. LNG in a liquid form is at -162°C (-259°F) and...
April 18, 2008
Latest in Ask the Experts
Ask the Experts

Suppliers of regenerator materials

I was looking for suppliers of regenerator materials. Can you please provide a list of vendors for: • Lead spheres • Bronze screen discs • Rare earth materials and spheres Thank you in advance for any help you can provide.
January 8, 2014
Ask the Experts

Containing ice accumulation while recovering helium

We are implementing a system to recover helium from our Janis ST-500 continuous flow LHe cryostat. The recovery system uses standard 1/4″ plastic tubing, which we connect directly to the cryostat’s exhaust port. The problem with this setup is that the gas is still quite cold as it leaves the...
June 24, 2013