Journal
PHYSICAL REVIEW LETTERS
Volume 124, Issue 13, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.124.134502
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Funding
- Laboratory Directed Research and Development (LDRD) Program of ORNL
- U.S. Department of Energy [DE-AC0500OR22725]
- Scientific User Facilities Division, Basic Energy Sciences, U.S. Department of Energy
- Shull Wollan Center's graduate student fellowship program
- National High Magnetic Field Laboratory - National Science Foundation Cooperative Agreement [DMR-1644779]
- State of Florida
- U.S. Army Research Office [W911NF1910047]
- U.S. Department of Defense (DOD) [W911NF1910047] Funding Source: U.S. Department of Defense (DOD)
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We show unequivocal evidence for formation of He-2* excimers in liquid He II created by ionizing radiation produced through neutron capture. Laser beams induce fluorescence of the excimers. The fluorescence is recorded at a rate of 55.6 Hz by a camera. The location of the fluorescence is determined with an uncertainty of 5 mu m. The technique provides an opportunity to record the flow of He excimers in a medium with very small viscosity and enables measurement of turbulence around macroscopic liter size objects or vortex matter in three dimensions.
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