Femtosecond X-ray line emission from multilayer targets irradiated by short laser pulses

Nakano, H.; Андреев, А. А.; Limpouch, J.

doi:10.1007/s00340-004-1582-7

Cited by 24 publications

(9 citation statements)

References 25 publications

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“…The FWHM sizes of Kα 1 and Kα 2 were in the range of 85-100 μm, which were a factor of 5.5-6.5 greater than the size of the laser spot. These x-ray to laser spot size ratios are also consistent with earlier investigations under similar prepulse conditions [26,27]. The horizontal lineout at a given y represented the emission from a sliced strip, y μm away from the laser focus [ Fig.…”

Section: Methodssupporting

confidence: 89%

Diagnosis of warm dense conditions in foil targets heated by intense femtosecond laser pulses using Kα imaging spectroscopy

et al. 2018

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Warm dense conditions in titanium foils irradiated with intense femtosecond laser pulses are diagnosed using an x-ray imaging spectroscopy technique. The line shapes of radially resolved titanium Kα spectra are measured with a toroidally bent GaAs crystal and an x-ray charge-coupled device. Measured spectra are compared with the K-shell emissions modeled using an atomic kinetics - spectroscopy simulation code. Kα line shapes are strongly affected by warm (5-40 eV) bulk electron temperatures and imply multiple temperature distributions in the targets. The spatial distribution of temperature is dependent on the target thickness, and a thin target shows an advantage to generate uniform warm dense conditions in a large area.

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Section: Methodssupporting

confidence: 89%

Diagnosis of warm dense conditions in foil targets heated by intense femtosecond laser pulses using Kα imaging spectroscopy

et al. 2018

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“…Enhancement of femtosecond K α -line emission from multilayer targets is reported by Nakano et al [32]. Their study showed that multilayer foils can increase the energy of K α -line emission while keeping the x-ray pulse duration at a hundred femtosecond.…”

Section: Introductionmentioning

confidence: 86%

Numerical study of picosecond soft x-ray enhancement from porous targets irradiated by double laser pulses

2010

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“…It is important to note here that with increasing laser intensity, the K a yield from planar Mo keeps on increasing monotonically, with no sign of saturation, unlike the peaking seen in lower and medium Z targets like Al and Ti, respectively. 20,21 This observation eliminates any possibility of re-absorption of the K a photons generated by the hot electrons penetrating inside the target, even at the highest laser intensity (2.5 Â 10 17 W/cm 2 ) used in our experiments. Fig.…”

mentioning

confidence: 88%

Enhancement of Kα emission through efficient hot electron generation in carbon nanotubes on intense laser pulse irradiation

Chakravarty

Arora

Naik

et al. 2012

Journal of Applied Physics

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Conversion efficiency and spectral broadening of the K-α line emitted from planar titanium targets irradiated with ultra-short laser pulses of high intensity Near complete absorption of the energy of intense ultra-short laser pulses (45 fs, intensity $1.6 Â 10 16 to 2.5 Â 10 17 W/cm 2 ) is observed in carbon nanotubes deposited on a planar molybdenum substrate. The hollow structure of the nanotube plasma facilitates resonant electric field enhancement during its ionization phase. This resonantly enhanced localized field at a density much larger than the critical density n c leads to efficient hot electron generation, which results in enhanced K a emission of Mo at 17.5 keV. It is observed that for nanotubes, depending on the degree of hollowness, there is an optimum laser intensity for maximum x-ray enhancement compared to a planar uncoated target.

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Femtosecond X-ray line emission from multilayer targets irradiated by short laser pulses

Cited by 24 publications

References 25 publications

Diagnosis of warm dense conditions in foil targets heated by intense femtosecond laser pulses using Kα imaging spectroscopy

Diagnosis of warm dense conditions in foil targets heated by intense femtosecond laser pulses using Kα imaging spectroscopy

Numerical study of picosecond soft x-ray enhancement from porous targets irradiated by double laser pulses

Enhancement of Kα emission through efficient hot electron generation in carbon nanotubes on intense laser pulse irradiation

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