Fisher, Shaun N. and Guénault, A.M. and Pickett, George R. and Skyba, P. (2003) A spin laser? The persistent processing domain in superfluid He-3-B at ultralow temperatures. Physica B: Condensed Matter, 329 (1). pp. 80-81. ISSN 0921-4526Full text not available from this repository.
We discuss various properties of the persistent precessing domain (PPD, formerly PIS) in superfluid He-3-B. These exotic NMR domains can only be excited at ultralow temperatures. At the lowest temperatures they freely precess for periods up to 2000 s. We identify various behaviors depending on the texture and magnetic field profile. We can create the domains with small generating pulses or excite them continuously but only with an excitation frequency higher than that of the domain precession. Remarkably, we can excite and sustain the precession by the application of white noise. Thus,. unusually, the coherent domain can extract energy from an incoherent energy source.
|Journal or Publication Title:||Physica B: Condensed Matter|
|Uncontrolled Keywords:||superfluid He-3 ; NMR ; ultralow temperatures|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited By:||Dr Richard P. Haley|
|Deposited On:||03 Feb 2009 16:08|
|Last Modified:||07 Jan 2015 13:47|
Actions (login required)