The study of Th M-X-ray satellites and hypersatellites induced by energetic O and Ne ions

Czarnota, M.; Pajek, M.; Banaś, D.; Dousse, J.‐Cl.; Berset, M.; Mauron, O.; Maillard, Y.-P.; Raboud, P.-A.; Chmielewska, D.; Rzadkiewicz, J.; Sujkowski, Z.; Hoszowska, J.; Polasik, M.; Słabkowska, K.

doi:10.1016/s0969-806x(03)00266-4

Cited by 17 publications

(15 citation statements)

References 10 publications

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“…The high-resolution measurements of the M-and N-shell satellites of Pd Lα 1,2 (L 3 M 4,5 ) x-ray transitions excited by fast O 7+ and Ne 6+ ions have been performed [8] at the Philips cyclotron in the Paul Scherrer Institute (PSI) in Villigen, Switzerland, using a von Hamos high-resolution diffraction spectrometer [5]. The x-ray spectra of Lα 1,2 (L 3 M 4,5 ) transitions were excited by O 7+ and Ne 6+ ion beams of energies 279 and 178 MeV, respectively, bombarding thin metallic palladium foils.…”

Section: Methodsmentioning

confidence: 99%

Multiple ionization effects in x-ray emission induced by heavy ions

Czarnota¹,

Pajek²,

Banaś³

et al. 2006

Braz. J. Phys.

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The x-ray satellite structure of Pd Lα 1,2 (L 3 M 4,5 ) transition excited by an impact of O 7+ and Ne 6+ ions with energies 279 and 178 MeV, respectively, which were measured using a high-resolution von Hamos crystal spectrometer, is discussed in terms of the multi-configuration Dirac-Fock (MCDF) calculations. We demonstrate, by using the arguments of the general central limit theorem (GCLT), that a structure of complex M-shell satellites of Pd Lα 1,2 (M −m ) transitions for a higher number of spectator vacancies (m > 4), which consists of hundreds of thousands of individual x-ray transitions as obtained from the MCDF calculations, can be well described by a single Voigtian profile. The Lorentzian width of such Voigtian line can be well modeled by using the results of the MCDF calculations for simpler configurations with a number of vacancies m ≤ 4 . This method allows one to describe realistically a complex structure of M-shell satellites, thus extending the applicability of the MCDF calculations, which are limited by an increasing complexity of numerical calculations.

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Section: Methodsmentioning

confidence: 99%

Multiple ionization effects in x-ray emission induced by heavy ions

Czarnota¹,

Pajek²,

Banaś³

et al. 2006

Braz. J. Phys.

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“…Therefore, in case of F 8+ impact the Au Mαβ X-rays comes at the higher energy side compared to that produced by electron impact (figure 6c). To the best of our knowledge, high resolution spectrum of Au M-X ray has not been observed before except a similar spectrum for Th has been reported [15].…”

Section: Al-k-satellite Structure: Electron Impactmentioning

confidence: 68%

A high resolution X-ray crystal spectrometer to study electron and heavy-ion impact atomic collisions

et al. 2007

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We have studied fast ion-atom and electron-atom collision processes using a reconditioned high resolution X-ray spectrometer. The X-rays, generated by the collisions, are dispersed by a curved ADP crystal (Johansson geometry) and detected by a gas proportional counter. A self-written LabVIEW based program has been used to give precise and controlled movement to the crystal and for data acquisition. The performance was tested by detecting the Kα diagram and satellite lines of several elements. The Kα satellite lines of Al have been studied in collision with 3-12 keV electrons and 40 MeV C 4+ ions. In ion collisions as large as four L-vacancies are created simultaneously with the K-vacancy, compared to two satellites in case of the e-impact. In addition, we have measured the X-rays from H-, He-and Li-like Si ions which arise due to the electron loss/capture process in highly charged 80 MeV Si 7+ ions in collision with thin carbon foil. Approximate charge state distribution has been obtained using this new technique.

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“…The study of Diamant et al [21] has presented the Lα' satellite of tungsten due to M 5 spectator hole transitions and have also presented [22] the Lα 1,2 line shapes can be well accounted for by the fully split diagram transition 2p 3/2 -1 → 3d 3/2,5/2 -1 alone, without involving contributions from any spectator hole transition. The recent study of Czarnota et al [23] has presented the observed M-shell satellite structure of Lα 1,2 X-ray transitions of 42 Mo and 46 Pd induced by an impact of O and Ne ions by one-and two-vacancy configurations for oxygen ions. The similar study of Czarnota et al [24] has also presented the measured X-ray satellite structure of Pd Lα 1,2 (L 3 M 4,5 ) transitions excited by an impact of O 7+ and Ne 6+ iosn with energy 279 and 178 MeV, respectively.…”

Section: Introductionmentioning

confidence: 99%

2p3/2 −13x−1−3x−13d−1 X-ray satellites spectra in the Lα1 region of 4d transition elements

Poonia

Soni

2009

Indian J Phys

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The X-ray satellite spectra arising due to 2p 3/2 -1 3x -1 -3x -1 3d -1 (x ≡ s, p, d) transition array, in elements with Z = 40 to 48, have been calculated, using available Hartree-Fock-Slater (HFS) data on 1s -1 -2p -1 3x -and 2p 3/2 -1 -3x -1 ,3x -1 Auger transition energies. The relative intensities of all the possible transitions have been estimated by considering cross -sections for the Auger transitions simultaneous to a hole creation and then distributing statistically the total cross sections for initial two hole states 2p 3/2 -1 -3x -1 amongst various allowed transitions from these initial states to 3x -1 3d -1 final states by Coster-Kronig (CK) and shake off processes. In both these processes initial single hole creation is the prime phenomenon. Each transition has been assumed to give rise to a Gaussian line and the overall spectrum has been computed as the sum of these Gaussian curves. The calculated spectra have been compared with the measured satellite energies in Lα 1 spectra. Their intense peaks have been identified as the observed satellite lines. The peaks in the theoretical satellite spectra were identified as the experimentally reported satellites α 3 , α 4 and α 5 , which lie on the highenergy side of the Lα 1 dipole line.

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The study of Th M-X-ray satellites and hypersatellites induced by energetic O and Ne ions

Cited by 17 publications

References 10 publications

Multiple ionization effects in x-ray emission induced by heavy ions

Multiple ionization effects in x-ray emission induced by heavy ions

A high resolution X-ray crystal spectrometer to study electron and heavy-ion impact atomic collisions

2p3/2 −13x−1−3x−13d−1 X-ray satellites spectra in the Lα1 region of 4d transition elements

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