Observation of the transient charging of a laser-irradiated solid

Year: 2009

Authors: Quinn K., Wilson PA., Ramakrishna B., Sarri G., Romagnani L., Pipahl P., Willi O., Lancia L., Fuchs J., Carroll D.C., Quinn M.N., Gallegos P., Yuan X.H., McKenna P., Clarke R.J., Neely D., Notley M., Macchi A., Borghesi M.

Autors Affiliation: Queens Univ Belfast, Dept Phys & Astron, Belfast BT7 1NN, Antrim, North Ireland;
Univ Dusseldorf, Inst Laser & Plasmaphys, D-40225 Dusseldorf, Germany;
Ecole Polytech, Lab Utilisat Lasers Intenses, F-91128 Palaiseau, France;
Univ Strathclyde, Dept Phys, SUPA, Glasgow G4 0NG, Lanark, Scotland;
Rutherford Appleton Lab, Cent Laser Facil, Chilton OX11 0QX, Oxon, England;
INFM, CNR, Dipartimento Fis E Fermi, PolyLAB, Pisa, Italy

Abstract: The proton radiography technique has been used to investigate the incidence of a 3 x10(19) W/cm(2) infrared pulse with a 125 mu m-diameter gold wire. The laser interaction is observed to drive the growth of a radial electric field similar to 10(10) V/m on the surface of the wire which rises and decays over a temporal window of 20 ps. Such studies of the ultrafast charging of a solid irradiated at high-intensity may be of relevance to schemes for laser-driven ion acceleration and the fast-ignitor concept for inertial confinement fusion.


Volume: 55 (2)      Pages from: 293  to: 297

More Information: This research was supported by: EPSRC grants EP/E048668/1, EP/E035728/1 and EP/C003586/1; DFG Nos. TR18 and GK1203; the British Council Alliance Programme; QUB Internationalisation Funds; a DEL/CAST scholarship part- funded by AWE plc; the Direct Access Scheme to the Central Laser Facility; and finally, by a Dorothy Hodgkin Postgraduate Award funded by EPSRC and Andor Technology. The support of the staff of the Central Laser Facility at RAL is gratefully acknowledged.
DOI: 10.1140/epjd/e2009-00079-7

Citations: 9
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