The influence of long (several millimeters) and hollow channels, bored in inhomogeneous ionized plasma by using a long pulse laser beam, on the propagation of short, ultraintense laser pulses has been studied. Compared to the case without a channel, propagation in channels significantly improves beam transmission and maintains a beam quality close to propagation in vacuum. In addition, the growth of the forward-Raman instability is strongly reduced. These results are beneficial for the direct scheme of the fast ignitor concept of inertial confinement fusion as we demonstrate, in fast-ignition-relevant conditions, that with such channels laser energy can be carried through increasingly dense plasmas close to the fuel core with minimal losses.

Enhanced Propagation for Relativistic Laser Pulses in Inhomogeneous Plasmas Using Hollow Channels / J., Fuchs; E., D'Humieres; Antici, Patrizio; Atzeni, Stefano; H., Bandulet; S., Depierreux; C., Labaune; Schiavi, Angelo; Y., Sentoku. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 105:22(2010), p. 225001. [10.1103/physrevlett.105.225001]

Enhanced Propagation for Relativistic Laser Pulses in Inhomogeneous Plasmas Using Hollow Channels

ANTICI, PATRIZIO;ATZENI, Stefano;SCHIAVI, ANGELO;
2010

Abstract

The influence of long (several millimeters) and hollow channels, bored in inhomogeneous ionized plasma by using a long pulse laser beam, on the propagation of short, ultraintense laser pulses has been studied. Compared to the case without a channel, propagation in channels significantly improves beam transmission and maintains a beam quality close to propagation in vacuum. In addition, the growth of the forward-Raman instability is strongly reduced. These results are beneficial for the direct scheme of the fast ignitor concept of inertial confinement fusion as we demonstrate, in fast-ignition-relevant conditions, that with such channels laser energy can be carried through increasingly dense plasmas close to the fuel core with minimal losses.
2010
01 Pubblicazione su rivista::01a Articolo in rivista
Enhanced Propagation for Relativistic Laser Pulses in Inhomogeneous Plasmas Using Hollow Channels / J., Fuchs; E., D'Humieres; Antici, Patrizio; Atzeni, Stefano; H., Bandulet; S., Depierreux; C., Labaune; Schiavi, Angelo; Y., Sentoku. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 105:22(2010), p. 225001. [10.1103/physrevlett.105.225001]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/103799
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