2001
DOI: 10.1103/physrevlett.86.2317
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MeV X Rays and Photoneutrons from Femtosecond Laser-Produced Plasmas

Abstract: We demonstrate a novel method to monitor the total angular distribution of the spectrum of hard x-ray emission from a plasma generated with femtosecond laser pulses with an intensity of 5 x 10(18) W/cm2 on a solid target. Measured and calculated angular distributions of x rays show a pronounced anisotropy for MeV photon energies. We complemented the spectral information by demonstrating a (gamma,n) nuclear reaction with a tabletop laser system.

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Cited by 180 publications
(94 citation statements)
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References 34 publications
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“…at BD9, formed five bubbles during the laser shots. Schwoerer et al [16] have also demonstrated ( , n) reaction using 250 mJ laser pulses with pulse duration 60 fs.…”
Section: Epj Web Of Conferencesmentioning
confidence: 99%
“…at BD9, formed five bubbles during the laser shots. Schwoerer et al [16] have also demonstrated ( , n) reaction using 250 mJ laser pulses with pulse duration 60 fs.…”
Section: Epj Web Of Conferencesmentioning
confidence: 99%
“…The hot electron distribution was inferred by using parametrized one-and two-temperature test distributions to fit the measured channel responses. 20,21 Here we have used a genetic algorithm to determine the electron distribution underlying the measured response in the detector channels as produced by the emitted bremsstrahlung spectrum. The electron spectrum is sampled by a set of 17 discrete electron energies E j ranging from 20 keV to 10 MeV.…”
Section: A Hot Electron Spectramentioning
confidence: 99%
“…[1,2]. Emission of gamma-photons from a Ta target exposed in vacuum to peak intensity of 10 18 W/cm 2 in a femtosecond range of pulse duration results has been reported recently [3]. The average energy of these photons is about few MeV.…”
Section: Introductionmentioning
confidence: 99%