Intensities of the xenon N4,5OO Auger electron spectrum revisited

Kivimäki, A.; Pfeiffer, L. N.; Aksela, H.; Nõmmiste, E.; Aksela, S.

doi:10.1016/s0368-2048(98)00470-8

Cited by 42 publications

(56 citation statements)

References 11 publications

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“…25 Table I lists representative electron energies associated with the outer-and inner-shell ionizations and subsequent Auger decay processes. 26 The cross section for j = 3/2 and 5/2 are evaluated by taking the branching ratio into account. 27 The relative intensities for the Auger transitions are also tabulated.…”

Section: A Generation Of Electrons By a Bright X-ray Sourcementioning

confidence: 99%

Morphology of a columnar stack of coronene molecules encapsulated in a single-walled carbon nanotube

2015

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The morphology of stacked coronene molecules encapsulated in a single-walled carbon nanotube (SWCNT) is investigated using atomistic simulation. First, the minimum energy configuration of coronene molecules in a SWCNT is sought by means of conjugate gradient (CG) minimization. Secondly, encapsulation of coronene molecules into a SWCNT existing in a coronene atmosphere is simulated by means of molecular dynamics (MD). In both of the simulations, the diameter of the SWCNT ranges from 1.35 to 1.69 nm, and the final configurations of coronene molecules within a SWCNT are examined. In a thin SWCNT, coronene molecules tilt against the radial direction of the SWCNT and slide relative to each other, whereas in a thick SWCNT, they do not tilt but rotate relative to each other. In a SWCNT of the intermediate diameter, they tilt, slide, and rotate. For the SWCNT diameter less than or equal to 1.52 nm, the mean tilt angle of the stacked coronene molecules almost linearly decreases with increasing the diameter, whereas for the diameter above 1.52 nm, it is approximately 0∘. To check the validity of the results, the MD simulations are performed changing the density of the coronene atmosphere and the length of the SWCNT; the results prove to be valid. Finally, the effects of temperature on the mean tilt angle and mean intermolecular distance of stacked coronene molecules are examined by a rather simplified simulation, which shows that both of them increase with increasing temperature.

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Section: A Generation Of Electrons By a Bright X-ray Sourcementioning

confidence: 99%

Morphology of a columnar stack of coronene molecules encapsulated in a single-walled carbon nanotube

2015

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“…11,12 The analyzer was used with pass energies of 5 eV and 10 eV which provided a resolution of 100 meV for the spectra measured at low photon energies (25-60 eV) and a resolution of 200 meV for the spectra at 120 eV photon energy. For a pass energy of 5 eV, the transmission function was measured using the Auger spectrum of xenon 13,14 and was flat within ± 10% for electrons with kinetic energies between 13 and 35 eV and decreased for lower kinetic energies to 91% of the maximum transmission at 10 eV and 70% of the maximum transmission at 8 eV. The samples were introduced to the interaction region using a resistively heated, anti-inductively wound oven.…”

Section: A Experimentalmentioning

confidence: 99%

Ionization and photofragmentation of Ru3(CO)12 and Os3(CO)12

Schalk

Josefsson

Richter

et al. 2015

The Journal of Chemical Physics

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In this paper, we use a combination of photoelectron spectroscopy, mass spectrometry, and density functional theory calculations to get a detailed understanding of valence single and double ionization and the subsequent dissociation processes. This is exemplified on benchmark systems, trimetallo-dodecacarbonyls M 3 (CO) 12 with M = Ru, Os, where the energy remaining in the molecule after photoionization can be retrieved by measuring the degree of fragmentation of the molecular ion. The intensity of different mass peaks can thus be directly related to ionization cross sections obtained by photoelectron spectroscopy. We find that the M-CO dissociation energy rises as the number of CO ligands decreases due to dissociation. Moreover, ionization of the CO ligands has a higher cross section than that of the metal center for both single and double ionization. After advanced fragmentation, a CO bond can break and the carbon atom remains bonded to the metal core. In addition, we found that the valence ionization cross sections of M 3 (CO) 12 are maximal at about 40 eV photon energy thus showing a more pronounced shape resonance than Ru and Os-complexes with a single metal atom center. Finally, an np → nd giant resonance absorption causes a significant increase of the ionization cross section above 50 eV for Ru 3 (CO) 12 . C 2015 AIP Publishing LLC. [http://dx

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“…The pass energies of 50 and 100 eV were used in the measurements, yielding the kinetic energy resolution of about 0.11 and 0.22 eV, respectively. The kinetic energy scale of the electron analyzer was calibrated against the N 4,5 OO Auger lines of xenon [19]. The photon energy scale was subsequently calibrated by recording the Xe 4d photoelectron lines, whose binding energies are accurately known [3].…”

Section: Methodsmentioning

confidence: 99%

Use of two-dimensional photoelectron spectroscopy in the decomposition of an inner-shell excitation spectrum broadened by super-Coster-Kronig decay

et al. 2013

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Use of two-dimensional photoelectron spectroscopy in the decomposition of an inner-shell excitation spectrum broadened by super- Coster-Kronig decay, 2013, Physical Review A. Atomic, Molecular, and Optical Physics, (88) The Ge 3p core excitation spectrum of the n-butylgermane molecule only reveals two peaks, whereas the rest of the fine structure is obscured due to the large lifetime broadenings of core-excited states. A two-dimensional presentation of resonant photoemission spectra allows us to observe some other resonances. The interpretation of experimental results is supported by ab initio calculations conducted at the four-component relativistic level of theory with full account made for spin-orbit interactions already in the zeroth-order Hamiltonian.

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Intensities of the xenon N4,5OO Auger electron spectrum revisited

Cited by 42 publications

References 11 publications

Morphology of a columnar stack of coronene molecules encapsulated in a single-walled carbon nanotube

Morphology of a columnar stack of coronene molecules encapsulated in a single-walled carbon nanotube

Ionization and photofragmentation of Ru3(CO)12 and Os3(CO)12

Use of two-dimensional photoelectron spectroscopy in the decomposition of an inner-shell excitation spectrum broadened by super-Coster-Kronig decay

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