In a paper about exchange effects in this isotope’s body-centered cubic solid phase, J. H. Hetherington added his cat as a coauthor under the pen name F. D. C. Willard. For 10 points each:
[10m] Name this lighter of the two isotopes used in a standard dilution refrigerator. Tritium undergoes beta-minus decay to generate this isotope.
ANSWER: helium-3 [or He-3; prompt on helium or He]
[10e] Because helium-3 atoms are fermions, they do not readily exhibit this low-temperature property in which a substance exhibits zero viscosity.
ANSWER: superfluidity [or word forms]
[10h] With Ginzburg and Leggett, this physicist won the 2003 Nobel Prize for theories on superfluid helium-3. This Russian physicist and Khalatnikov expanded Landau’s theory of Fermi liquids to model low-temperature helium-3.
ANSWER: Alexei Abrikosov
<MY, Physics>