Nuclear magnetic resonance measurements of {sup 3}He confined in 98% porosity aerogel
- and others
The authors report measurements at various pressures of the magnetization and magnetic resonance frequency of {sup 3}He in 98% porous aerogel using pulsed NMR techniques. Their results provide evidence for superfluidity but with a suppressed transition temperature, T{sub p}, the resonance frequency is observed to rise continuously with decreasing temperature. T{sub p} is 68% to 85% of T{sub c} with the greater suppression occurring at the lower pressures. There are no observable discontinuities in the magnetization or its slope at T = T{sub p}, and so it is likely that the order parameter is an equal spin pairing state. The tipping angle dependence of the resonance frequency is neither A-phase or B-phase like. The resonance frequency of 3.6 MHz has been studied, and work at other fields is underway.
- OSTI ID:
- 374901
- Report Number(s):
- CONF-9304297--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 2 Vol. 40; ISSN 0003-0503; ISSN BAPSA6
- Country of Publication:
- United States
- Language:
- English
Similar Records
Superfluid density of {sup 3}He in 98% aerogel in small magnetic fields
Equal-spin-pairing superfluid phase of {sup 3}He in an aerogel acting as an impurity