| Issue |
Europhys. Lett.
Volume 61, Number 5, March 2003
|
|
|---|---|---|
| Page(s) | 632 - 638 | |
| Section | Physics of gases, plasmas and electric discharges | |
| DOI | https://doi.org/10.1209/epl/i2003-00118-y | |
| Published online | 01 February 2003 | |
Čerenkov radiation diagnostics of hot electrons generated by fs-laser interaction with solid targets
1
Max-Planck-Institut für Quantenoptik Hans-Kopfermann-Str. 1, D-85748 Garching, Germany
2
Ludwig-Maximilians-Universität München Am Coulombwall 1, D-85748 Garching, Germany
Received:
5
August
2002
Accepted:
13
December
2002
A new method of diagnostics of hot electrons from a
laser-produced plasma is experimentally demonstrated.
Titanium-sapphire laser pulses (1
/130
) irradiate
copper foils backed by a dielectric. The energy distribution and
direction of the hot electrons generated is determined by
recording visible Čerenkov radiation with spatial resolution.
The results demonstrate a change in the electron generation
mechanism at relativistic intensities.
PACS: 52.50.Jm – Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.) / 52.59.-f – Intense particle beams and radiation sources / 52.70.Kz – Optical (ultraviolet, visible, infrared) measurements
© EDP Sciences, 2003
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