<i>K-</i>and<i>L</i>-shell ionization of heavy targets by various 20- and 80-MeV/u projectiles

Kravchuk, V. L.; Berg, van den Ad M; Fleurot, F.; Huu, M.A. de; Löhner, H.; Wilschut, Hans; Polasik, M.; Lewandowska-Robak, Maja; Słabkowska, K.

doi:10.1103/physreva.64.062710

Cited by 16 publications

(13 citation statements)

References 36 publications

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“…Recently, the MCDF-MSAL method has been applied to the calculations of many different K x-ray diagram lines and their KL 1 M 0 satellite lines for Ta, Pb, and Th. The results of those calculations were crucial in the analysis of the K x-ray spectra of the above atoms induced by He, C, O, and Ne projectiles [44].…”

Section: Mcdf Calculationsmentioning

confidence: 99%

“…Recently [44], the results of extensive MCDF calculations of many K x-ray diagram lines and the corresponding KL 1 M 0 satellite lines of Ta, Pb, and Th enabled reliable interpretation of measured K x-ray spectra, induced during nearcentral collisions with light and heavy projectiles. The considered collisions lead to nuclear reactions and owing to the MCDF calculations of the K x-ray line positions and intensities it was possible to decompose the measured spectra of a very complex origin into contributions from the target atom and the products of nuclear reactions, and then to get reliable information about the K x-ray cross sections and the L-shell ionization probabilities [44].…”

Section: Introductionmentioning

confidence: 99%

“…The considered collisions lead to nuclear reactions and owing to the MCDF calculations of the K x-ray line positions and intensities it was possible to decompose the measured spectra of a very complex origin into contributions from the target atom and the products of nuclear reactions, and then to get reliable information about the K x-ray cross sections and the L-shell ionization probabilities [44].…”

Section: Introductionmentioning

confidence: 99%

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Structure of variousKL1x-ray satellite lines of heavy atoms

Polasik

Lewandowska-Robak

2004

Phys. Rev. A

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Multiconfiguration Dirac-Fock calculations with the inclusion of the transverse (Breit) interaction and QED corrections have been carried out for Pd, Sn, Tb, Ta, Pb, and Th in order to obtain positions and intensities of various electric dipole, electric quadrupole, and magnetic dipole K x-ray diagram lines and of their KL 1 satellites. Theoretically constructed stick spectra have been presented together with synthesized spectra (the sum of the Lorentzian natural line shapes) for each studied element. Taking into account the existence of an L-shell hole in the 2s or 2p subshell, the effect of additional L-shell ionization on the shapes and structure of the K x-ray spectra has been examined. It has been observed that generally with increasing atomic number Z the shapes of particular satellite line groups tend to become smoother and to differ less from the shapes of appropriate diagram lines. Relations between the values of energy shifts of various satellite lines for each element and the changes of these relations with Z have also been studied. Additionally, the relations between the intensities of different diagram lines for each element have been systematically analyzed, likewise the changes with Z of the role of particular diagram lines. This study can be helpful in reliable and quantitative interpretation of many experimental K x-ray spectra of Pd, Sn, Tb, Ta, Pb, and Th induced in collisions with various projectiles.

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Section: Mcdf Calculationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structure of variousKL1x-ray satellite lines of heavy atoms

Polasik

Lewandowska-Robak

2004

Phys. Rev. A

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“…The multiple ionization in collision processes has been the subject of numerous studies based on the interpretation of the K-, L-and M-X-ray spectra (Carlen et al, 1992(Carlen et al, , 1994Ludziejewski et al, 1995Ludziejewski et al, , 1996Herren et al, 1998;Kravchuk et al, 2001;Rzadkiewicz et al, 2003;Czarnota et al, 2003a,b). Recently, thorium Ma 1;2 (M 5 N 6;7 ) and Mb 1 (M 4 N 6 ) X-ray line spectra of a very complex origin excited by an impact of energetic oxygen and neon ions have been measured (Czarnota et al, 2003b) by means of a high-resolution von Hamos crystal spectrometer having the energy resolution of about 1 eV.…”

Section: Introductionmentioning

confidence: 98%

Structure of M-X-ray satellite and hypersatellite lines of thorium

Polasik

Słabkowska

2006

Radiation Physics and Chemistry

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“…The present work, focusing mainly on the KL 0 M 1 x-ray satellite lines of Pd, Tb, Ta and Th, has been the continuation of the studies presented in [1], containing a detailed analysis of various KL 1 M 0 x-ray satellite lines of Pd, Sn, Tb, Ta, Pb and Th. It has also been partly inspired by [55], where extensive MCDF calculations for various KL 1 M 0 satellite lines of heavy atoms (Ta, Pb and Th) enabled otherwise impossible correct interpretation of the measured K x-ray spectra induced during near-central collisions with light (He), as well as heavy (C, O and Ne) projectiles. The MCDF calculations [55] of the K x-ray line positions and intensities made it possible to decompose experimental spectra of a very complex origin into the contributions from the target atoms and the products of nuclear reactions, which was crucial in obtaining reliable information about the K x-ray cross sections and the L-shell ionization probabilities.…”

Section: Introductionmentioning

confidence: 99%

Possibility of extraction of various KL⁰M¹and KL¹M⁰satellite lines in the x-ray spectra of medium-Zand heavy atoms

Polasik

Lewandowska-Robak

2006

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

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Predictions about the shapes of the K x-ray spectra of medium-Z and heavy atoms have been made on the basis of the results of theoretical multiconfiguration Dirac–Fock calculations (with the inclusion of the transverse Breit interaction and QED corrections) for various KL0M1 x-ray satellite lines of Pd, Tb, Ta and Th. The construction of theoretical stick and synthesized (the sum of the Lorentzian natural line shapes) K x-ray spectra (including also diagram and KL1M0 satellite lines) has enabled foreseeing such details of experimental spectra as the overlapping and visibility of particular groups of lines. The energy regions possibly best for the extraction of the satellite contributions in the measured K x-ray spectra have been indicated for each studied element. The effect of additional single ionization of the different subshells of the M shell on the structure and shapes of the spectra of various K x-ray lines has been investigated in detail for Pd, Tb, Ta and Th. It has been found that in the KL0M1 satellite spectra the shapes of the bands mainly resemble the shapes of the corresponding K x-ray diagram lines (but they are wider than the latter). For each element, the biggest average energy shifts with respect to the diagram lines are observed for a given kind of the KL0M1 lines mostly in the case of removing a 3p electron in the initial state, whereas the smallest shifts are caused by removing a 3d electron. Our study can enable the correct quantitative interpretation of the K x-ray spectra of different multiply ionized medium-Z and heavy atoms (induced in collisions with light or heavy ions) and can be instrumental in planning various new experiments involving the determination of the M- and L-shell ionization probability.

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K-andL-shell ionization of heavy targets by various 20- and 80-MeV/u projectiles

Cited by 16 publications

References 36 publications

Structure of variousKL1x-ray satellite lines of heavy atoms

Structure of variousKL1x-ray satellite lines of heavy atoms

Structure of M-X-ray satellite and hypersatellite lines of thorium

Possibility of extraction of various KL⁰M¹and KL¹M⁰satellite lines in the x-ray spectra of medium-Zand heavy atoms

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K-andL-shell ionization of heavy targets by various 20- and 80-MeV/u projectiles

Cited by 16 publications

References 36 publications

Structure of variousKL1x-ray satellite lines of heavy atoms

Structure of variousKL1x-ray satellite lines of heavy atoms

Structure of M-X-ray satellite and hypersatellite lines of thorium

Possibility of extraction of various KL0M1and KL1M0satellite lines in the x-ray spectra of medium-Zand heavy atoms

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Product

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Possibility of extraction of various KL⁰M¹and KL¹M⁰satellite lines in the x-ray spectra of medium-Zand heavy atoms