| Autor: |
X, Wen, S R, Bao, L, McDonald, J, Pierce, G L, Greene, Lowell, Crow, Xin, Tong, A, Mezzacappa, R, Glasby, W, Guo, M R, Fitzsimmons |
| Rok vydání: |
2019 |
| Zdroj: |
Physical review letters. 124(13) |
| ISSN: |
1079-7114 |
| Popis: |
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 μm. The technique provides an opportunity to record the flow of He_{2}^{*} excimers in a medium with very small viscosity and enables measurement of turbulence around macroscopic liter size objects or vortex matter in three dimensions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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