Spectra of multiply charged hollow ions in the plasma produced by a short-wavelength nanosecond laser

Abdallah, J.; Skobelev, I. Yu.; Faenov, A. Ya.; Magunov, A. I.; Pikuz, T. A.; Flora, F.; Bollanti, S.; DiLazzaro, P.; Letardi, T.; Burattini, E.; Grilli, Antonio; Reale, A.; Palladino, L.; Tomassetti, Giuseppe; Scafati, A.; Reale, L.

doi:10.1070/qe2000v030n08abeh001793

Cited by 18 publications

(14 citation statements)

References 11 publications

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“…Fewer lines exist in such a region and it can be possible to distinguish and investigate the mechanism for their production (Gauthier et al, 1995). The most "clean" spectral range may be the wavelength range between the Ly and He a lines of highly-charged ions Abdallah et al, 2000;Rosmej & Lee, 2007) (where the hollow atom transitions (arising from L-shell ions) are from states where the initial K shell is completely vacant (1s) 22 ). In these cases, hollow atom spectra from Li-, Be-, and other L-shell lines are well separated from, not only each other, but from the usual dielectronic satellites from such ions.…”

Section: Introductionmentioning

confidence: 99%

The role of hollow atoms in the spectra of an ultrashort-pulse-laser-driven Ar cluster target

et al. 2008

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An investigation is made of the role of hollow atoms in the spectra of an ultrashort-pulse-laser-driven Ar cluster target. Experimental measurements are presented from an Ar cluster-gas target using short-pulse lasers with various intensities, durations, and contrasts. Calculations in support of these measurements have been performed using a detailed atomic kinetics model with the ion distributions found from solution of the time-dependent rate equations. The calculations are in good agreement with the measurements and the role of hollow atoms in the resulting complicated spectra is analyzed. It is demonstrated that, although the presence of hollow atoms is estimated to add only around 2% to the total line emission, signatures of hollow atom spectra can be identified in the calculations, which are qualitatively supported by the experimental measurements.

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Section: Introductionmentioning

confidence: 99%

The role of hollow atoms in the spectra of an ultrashort-pulse-laser-driven Ar cluster target

et al. 2008

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“…Recently the production of hollow atoms has been achieved through collisions of highly charged ions with a solid~Bri-and et al, 1990Suto & Kagawa, 1998!, intense laser irradiation~Aglitskiy et al, 1996Faenov et al, 1997Faenov et al, , 1999Urnov et al, 1998;Rosmej et al, 1999;Abdallah et al, 2000!, and the interaction between high brightness X-rays and a solid~Moribayashi et al, 1998!. Applications of X-rays emitted from hollow atoms to the diagnosis of high density plasma~Faenov et al, 1997;Rosmej et al, 1999!…”

Section: Introductionmentioning

confidence: 99%

X-ray emission from hollow atoms produced by collisions of multiply charged ions with a solid

Moribayashi¹,

Suto²,

Zhidkov³

et al. 2001

Laser Part. Beams

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The X-ray emission from hollow atoms produced by collisions of multiply charged ions accelerated by a short pulse laser with a solid or foil is studied theoretically. The possibility of obtaining a high conversion efficiency X-ray source in an ultrafast atomic process~;1 fs! is demonstrated using the multistep-capture-and-loss~MSCL! model. Such an X-ray source has a clear advantage for the spectral range around a few kiloelectron volts over the conventional K a X-ray source. Namely, the number of X-ray photons increases as the laser energy becomes larger and could reach 3 ϫ 10 11 photons for a laser energy of about 10 J.

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“…Despite the fact that a lot of works have been devoted to the study of plasma X-ray radiation produced at focusing the high-power laser radiation on the solid target surface (e.g. [1][2][3][4][5]), many problems still remain to be unsolved. Such factors as small size of the studied object (10 −1 -10 −2 cm), short lifetime (~10 −9 s), high temperature (100 -1000 eV) and density (10 19 -10 22 cm −3 ) put forward strict requirements to the means of such plasma diagnostics.…”

Section: Introductionmentioning

confidence: 99%

X-Ray and VUV Spectra from the Laser Plasma Produced with “Kanal-2” Facility

Kologrivov¹,

Осипов²,

Puzyrev³

et al. 2014

JMP

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The paper presents experimental results obtained on "Kanal-2" facility. Laser radiation focusing on the surface of plane magnesium targets created the high temperature plasma, which emitted X-ray and vacuum ultraviolet (VUV) radiation. This radiation spectrum was investigated with two spectrographs: the mica crystal spectrograph (working range 8.2 Å-9.6 Å) and the grazing incidence VUV spectrograph (working rage 30 Å-130 Å). A set of beryllium stepwise attenuators appended the diagnostic complex and allowed us to get an approximated picture of a continuous spectrum within the range of 2.2 Å-6.2 Å. The estimation of the plasma electron temperature T e from the ratio between the intensity of the dielectronic satellites and the resonance line gives T e ~ 180 eV. The ratio between the intensity of the resonance and intercombination lines gives the electron density of the emitting zone n e ~ 2 × 10 19 cm −3. Some lines observed within the spectral range of 8.5 Å-9.1 Å belong to none of the transitions of Mg ions. Perhaps the observed spectrum is determined by the transitions in so-called hollow ions of Mg, i.e. in the ions with unfilled inner shells. The spectra obtained with the grazing incidence spectrograph and with the minimum-directioned discrepancy iteration method of spectrum reconstruction from the attenuation curve in the beryllium stepwise attenuators are also presented.

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Spectra of multiply charged hollow ions in the plasma produced by a short-wavelength nanosecond laser

Cited by 18 publications

References 11 publications

The role of hollow atoms in the spectra of an ultrashort-pulse-laser-driven Ar cluster target

The role of hollow atoms in the spectra of an ultrashort-pulse-laser-driven Ar cluster target

X-ray emission from hollow atoms produced by collisions of multiply charged ions with a solid

X-Ray and VUV Spectra from the Laser Plasma Produced with “Kanal-2” Facility

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