Multiple photoionisation in the rare gases from threshold to 280 eV

Holland, D.M.P.; Codling, K.; Marr, G. V.; West, John B.

doi:10.1088/0022-3700/12/15/008

Cited by 201 publications

(97 citation statements)

References 32 publications

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“…The first XUV pulse (92 eV) with a moderate intensity (8x10 12 W/cm 2 ) ionizes Xe atoms within the clusters. A large number of electrons (up to one electron per cluster atom) is released upon photoabsorption from individual atoms inside the cluster due to the dominant ionization of the 4d core level of Xe atoms at this photon energy, followed by a single or a cascade of two Auger decay processes [24]. Most of the activated electrons, however, remain quasi-free, i.e., trapped by the Coulomb potential of the cluster [12].…”

Section: Introductionmentioning

confidence: 99%

Ionization dynamics in expanding clusters studied by XUV pump–probe spectroscopy

Krikunova

Adolph

Gorkhover

et al. 2012

J. Phys. B: At. Mol. Opt. Phys.

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Abstract. The expansion and disintegration dynamics of xenon clusters initiated by the ionization with femtosecond soft-X-ray (XUV) pulses were studied with pumpprobe spectroscopy using the autocorrelator setup of the Free-electron LASer facility at Hamburg (FLASH). The ionization by the first XUV pulse of 92 eV photon energy (8x10 12 W/cm 2 ) leads to the generation of a large number of quasi-free electrons trapped by the space charge of the cluster ions. A temporally delayed, more intense probe (4x10 13 W/cm 2 ) pulse substantially increases a population of nanoplasma electrons providing a way of probing plasma states in the expanding cluster by tracing the average charge of fragment ions. The results of the study reveal a time scale for cluster expansion and disintegration, which depends essentially on the initial cluster size. The average charge state of fragment ions and thus the cluster plasma changes significantly on a time scale of 1-3 ps.

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Section: Introductionmentioning

confidence: 99%

Ionization dynamics in expanding clusters studied by XUV pump–probe spectroscopy

Krikunova

Adolph

Gorkhover

et al. 2012

J. Phys. B: At. Mol. Opt. Phys.

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“…The charge state and photoion spectra were studied for Ne [3,49], Ar [4,11,12,[50][51][52][53], Kr [5,6,33,[53][54][55][56], Xe [6,9,16,34,35,46,[57][58][59][60], and for all of them [61][62][63]. Also such spectra were investigated for lanthanides [7-9, 15, 32, 64-66], Mg [50,67], Al, Si, S, Ca, Fe [50], Cu [18], Sr [68], Ba [69], Au [70], Re [71], and Ta [71].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the cascades in atoms using the global characteristics of spectra

Karazija¹,

Kučas²,

Jonauskas³

2004

Lith. J. Phys.

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Dedicated to the 100th anniversary of Professor A. JucysFollowing the creation of inner-shell vacancy in an atom, the cascade of radiative and nonradiative transitions takes place. It can be analysed employing the final charge distribution of ions, the electron and characteristic emission spectra. The development of the experimental and theoretical investigation of cascades is shortly reviewed. The main attention is paid to the description of a cascade using the global characteristics of spectra, especially in the cases of transitions between close-lying and overlapping configurations. Some applications of the global characteristics method are given.

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“…Early works on the rare gases, [1][2][3][4] and on some atomic vapors, [5-81 measured the energy dependence of the branching ratio between double and single photoionization cross sections. They found that double photoionization is not a rare event and provides the material for a critical test of atomic calculations.…”

Section: Introductionmentioning

confidence: 99%

First observation of a Fano profile following one step autoionization into a double photoionization continuum

et al. 1993

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Multiple photoionisation in the rare gases from threshold to 280 eV

Cited by 201 publications

References 32 publications

Ionization dynamics in expanding clusters studied by XUV pump–probe spectroscopy

Ionization dynamics in expanding clusters studied by XUV pump–probe spectroscopy

Investigation of the cascades in atoms using the global characteristics of spectra

First observation of a Fano profile following one step autoionization into a double photoionization continuum

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