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Soft x-ray emission produced by a sub-picosecond laser in a single- and double-pulse scheme (1997)

Pelletier, J. F. ; Chaker, M. ; Kieffer, J. C.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 81 (1997), S. 5980-5983

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: The interaction of a high-contrast, 400 fs, 5×1017 W/cm2 laser pulse with a preformed tantalum plasma produced in a double-pulse configuration is investigated. The x-ray emission characteristics are studied for different time delays between the two laser pulses. A time-resolved transmission grating spectrometer is used to measure the x-ray conversion efficiency and emission duration in the 0.2–1.2 keV energy range. Our results show that it is possible to increase the x-ray source conversion efficiency by an order of magnitude simply by optimizing the delay between the laser pulses. To give an overview of the performances available from such laser-plasma x-ray sources, these results are compared those obtained with a single laser pulse in different interaction regimes. © 1997 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.364387

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