Abstract
The phonon spectrum due to random particle motion in a plasma crystal was measured. The crystal was made of negatively charged microspheres immersed in a plasma at a low gas pressure. It was found that the phonons obey a dispersion relation that assumed a Yukawa interparticle potential. Also, the wave energy measured in Fourier space was found to be approximately twice as large as the particle kinetic energy measured in configuration space.
| Original language | English (US) |
|---|---|
| Article number | 035001 |
| Pages (from-to) | 350011-350014 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 89 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jul 15 2002 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy
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