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New Magnetism Research Brings High-Temp Superconductivity Applications Closer

A research team led by the US Department of Energy's (DOE's) Argonne National Laboratory (CSA CSM) has discovered that only half the atoms in some iron-based superconductors are magnetic, providing a conclusive demonstration of the wave-like properties of metallic magnetism in these materials. The discovery allows for a clearer understanding...

Deposition Technique Results in Copper Oxide Cuprate Superconductivity

Scientists from the US Department of Energy's (DOE) Brookhaven National Laboratory have synthesized ultrathin films containing multiple samples of a copper oxide cuprate in order to study its electronic behavior at near absolute zero. As with other cuprates, the compound is an insulator in its native state and does not...

Physicists Discover Flaws in Bean’s Superconductor Theory

University of Houston physicists report finding major theoretical flaws in the "Bean" or "Critical State Model," a generally accepted theoretical explanation of how a superconductor traps and holds a magnetic field. The team's research, published in the Journal of Applied Physics, reveals unexpected new behaviors favorable to practical applications, including...

LHC Restarted, Researchers Eye 2,700 Bunches per Beam

The Large Hadron Collider (LHC) resumed operations on March 25 when CERN researchers opened its doors to allow particles to travel around the ring for the first time since the year-end technical stop (YETS) began in December 2015. Several updates and interventions took place in LHC accelerators and beamlines during...

LCLS-II Upgrade Will Boost Power of World’s Brightest X-ray Laser

Construction is underway on a major upgrade to LCLS (Linac Coherent Light Source), a unique X-ray laser at the Department of Energy’s SLAC National Accelerator Laboratory. The project, known as LCLS-II, will add a second X-ray laser beam that’s 10,000 times brighter, on average, than the first one and fires...

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Refrigerators and Liquefiers

Two of the most common terms used in cryogenics are “refrigerator” and “liquefier.” These terms describe similar and, as will be seen, in some cases identical components. A refrigerator provides cooling (that is, absorbs heat) at cryogenic temperatures. Refrigerators typically put a working fluid (such as helium) through one of...

Air Separation

Air separation is one of the largest, as well as earliest, industrial applications of cryogenics. In this process, cryogenic temperatures are used to separate air into its constituent gases: nitrogen (78.08%), oxygen (20.95%), argon (0.93%) and carbon dioxide (0.3%). Trace gases such as krypton, neon, xenon and helium total far...

Coefficient of Performance and Figure of Merit

The coefficient of performance (COP) is used to describe the effectiveness of refrigerators, including those operating at cryogenic temperatures. The COP is defined as the amount of heat removed at the cryogenic operating temperature of the refrigerator divided by the amount of work that must be applied to remove the...

Air Separation and Liquefaction

by Nils Tellier, PE, President, EPSIM Corporation (CSA CSM) nils@epsim.us All illustrations courtesy EPSIM Corporation Background History of Air Separation and Liquefaction This section builds on a rich history of methods to develop deep refrigeration and cryogenic liquefaction during the 19th Century. You are encouraged to read Cryo Central’s History...

Bose-Einstein Condensate

A Bose-Einstein condensate, first proposed in 1925 by Albert Einstein based on work done by Satyendra Nath Bose (the same Bose from whom the term boson is derived), is a super-cold state of matter in which almost all of the individual atoms have “condensed” down to the lowest possible quantum...

Cold Technology for Pest Control

While it does not reach temperatures cold enough to be called cryogenic, carbon dioxide snow is at the heart of a new way of dealing with unwanted pests. It utilizes a quick freezing process that takes advantage of the properties of carbon dioxide snow and has a number of benefits...

Cryogenic Finishing

The following 3 articles discuss the uses and procedures of various type of cryogenic finishing. 1) By Robin A. Rhodes, Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Cryogenic Deflashing is employed to remove undesired residual mold flash that remains on molded parts after they are removed or ejected from the...