Abstract
We show that the broadband conical emission associated with filaments in air extends down to the radiofrequency region. This rf emission which originates from the longitudinal oscillation of charged ions formed during filamentation is strongly enhanced by the presence of a longitudinal static electric field.
| Original language | English |
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| Article number | 141111 |
| Journal | Applied Physics Letters |
| Volume | 96 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 27 Apr 2010 |