In situ electromagnetic field diagnostics with an electron plasma in a Penning-Malmberg trap
Abstract
We demonstrate a novel detection method for the cyclotron resonance frequency of an electron plasma in a Penning-Malmberg trap. With this technique, the electron plasma is used as an in situ diagnostic tool for measurement of the static magnetic field and the microwave electric field in the trap. The cyclotron motion of the electron plasma is excited by microwave radiation and the temperature change of the plasma is measured non-destructively by monitoring the plasma's quadrupole mode frequency. The spatially-resolved microwave electric field strength can be inferred from the plasma temperature change and the magnetic field is found through the cyclotron resonance frequency. These measurements were used extensively in the recently reported demonstration of resonant quantum interactions with antihydrogen.
Keywords
Cite
@article{arxiv.1405.0692,
title = {In situ electromagnetic field diagnostics with an electron plasma in a Penning-Malmberg trap},
author = {C. Amole and M. D. Ashkezari and M. Baquero-Ruiz and W. Bertsche and E. Butler and A. Capra and C. L. Cesar and M. Charlton and A. Deller and N. Evetts and S. Eriksson and J. Fajans and T. Friesen and M. C. Fujiwara and D. R. Gill and A. Gutierrez and J. S. Hangst and W. N. Hardy and M. E. Hayden and C. A. Isaac and S. Jonsell and L. Kurchaninov and A. Little and N. Madsen and J. T. K. McKenna and S. Menary and S. C. Napoli and K. Olchanski and A. Olin and P. Pusa and C. Ø. Rasmussen and F. Robicheaux and E. Sarid and D. M. Silveira and C. So and S. Stracka and T. Tharp and R. I. Thompson and D. P. van der Werf and J. S. Wurtele},
journal= {arXiv preprint arXiv:1405.0692},
year = {2014}
}