FYSS6325 Cryogenics (5 cr)

• properties of cryoliquids

• solid matter at low temperatures

• thermal conductance and isolation

• Helium-4 and closed cycle cryostats

• Helium-3 cryostats

• He3-He4 dilution refrigeration;

• Pomeranchuck cooling

• adiabatic demagnetization

• adiabatic nuclear demagnetization

• temperature scales and fixed points

• low temperature thermometry 

At the end of this course, students will be able to

• name the main characteristics of cryoliquids,

• tell about the principles of the properties of solid matter at low temperatures

• describe the operational principles of He3 and He4 cryostats

• describe the operational principle of He3-He4 dilution refrigerators

• explain the idea behind Pomeranchuck cooling

• explain the mechanisms of electronic and nuclear adiabatic demagnetization

• define temperature scales and describe a few low-temperature thermometry techniques

• write a short description of one topic in cryogenics

• give a seminar talk on one topic in cryogenics 

FYSA2001 Modern Physics, part A or equivalent. 

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