Single-photon double K-shell ionization of low-Z atoms

J. Hoszowska; S. Kheifets; Dousse J-Cl Dousse; I. Bray; W. Cao; K. Fennane; Y. Kayser; M. Kačvič; J. Szlachetko; M. Szlachetko

doi:10.1088/1742-6596/212/1/012006

Single-photon double K-shell ionization of low-Z atoms

J. Hoszowska^*, S. Kheifets, Dousse J-Cl Dousse, I. Bray, W. Cao, K. Fennane, Y. Kayser, M. Kačvič, J. Szlachetko, M. Szlachetko

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The photon energy dependence of the double K-shell ionization of light atoms is reported. Experimental double-to-single photoionization cross section ratios for Mg, Al, Si and Ca were obtained from measurements of high-resolution x-ray emission spectra. The double photoionization (DPI) cross-sections for K-shell hollow atom production are compared to convergent close-coupling calculations (CCC) for neutral atoms and He-like ions. The relative importance of the initial-state and final-state electron-electron interactions to the K-shell DPI in many-electron atoms and two-electron ions is addressed. Physical mechanisms and scaling laws of the K-shell double photoionization are examined. A semiempirical universal scaling of the DPI cross sections with the effective nuclear charge for neutral atoms 2≤Z≤47 is established.

Original language	English
Article number	012006
Journal	Journal of Physics: Conference Series
Volume	212
DOIs	https://doi.org/10.1088/1742-6596/212/1/012006
Publication status	Published - 2010

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title = "Single-photon double K-shell ionization of low-Z atoms",

abstract = "The photon energy dependence of the double K-shell ionization of light atoms is reported. Experimental double-to-single photoionization cross section ratios for Mg, Al, Si and Ca were obtained from measurements of high-resolution x-ray emission spectra. The double photoionization (DPI) cross-sections for K-shell hollow atom production are compared to convergent close-coupling calculations (CCC) for neutral atoms and He-like ions. The relative importance of the initial-state and final-state electron-electron interactions to the K-shell DPI in many-electron atoms and two-electron ions is addressed. Physical mechanisms and scaling laws of the K-shell double photoionization are examined. A semiempirical universal scaling of the DPI cross sections with the effective nuclear charge for neutral atoms 2≤Z≤47 is established.",

author = "J. Hoszowska and S. Kheifets and {J-Cl Dousse}, Dousse and I. Bray and W. Cao and K. Fennane and Y. Kayser and M. Ka{\v c}vi{\v c} and J. Szlachetko and M. Szlachetko",

year = "2010",

doi = "10.1088/1742-6596/212/1/012006",

language = "English",

volume = "212",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

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TY - JOUR

T1 - Single-photon double K-shell ionization of low-Z atoms

AU - Hoszowska, J.

AU - Kheifets, S.

AU - J-Cl Dousse, Dousse

AU - Bray, I.

AU - Cao, W.

AU - Fennane, K.

AU - Kayser, Y.

AU - Kačvič, M.

AU - Szlachetko, J.

AU - Szlachetko, M.

PY - 2010

Y1 - 2010

N2 - The photon energy dependence of the double K-shell ionization of light atoms is reported. Experimental double-to-single photoionization cross section ratios for Mg, Al, Si and Ca were obtained from measurements of high-resolution x-ray emission spectra. The double photoionization (DPI) cross-sections for K-shell hollow atom production are compared to convergent close-coupling calculations (CCC) for neutral atoms and He-like ions. The relative importance of the initial-state and final-state electron-electron interactions to the K-shell DPI in many-electron atoms and two-electron ions is addressed. Physical mechanisms and scaling laws of the K-shell double photoionization are examined. A semiempirical universal scaling of the DPI cross sections with the effective nuclear charge for neutral atoms 2≤Z≤47 is established.

AB - The photon energy dependence of the double K-shell ionization of light atoms is reported. Experimental double-to-single photoionization cross section ratios for Mg, Al, Si and Ca were obtained from measurements of high-resolution x-ray emission spectra. The double photoionization (DPI) cross-sections for K-shell hollow atom production are compared to convergent close-coupling calculations (CCC) for neutral atoms and He-like ions. The relative importance of the initial-state and final-state electron-electron interactions to the K-shell DPI in many-electron atoms and two-electron ions is addressed. Physical mechanisms and scaling laws of the K-shell double photoionization are examined. A semiempirical universal scaling of the DPI cross sections with the effective nuclear charge for neutral atoms 2≤Z≤47 is established.

UR - http://www.scopus.com/inward/record.url?scp=77950656554&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/212/1/012006

DO - 10.1088/1742-6596/212/1/012006

M3 - Article

SN - 1742-6588

VL - 212

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

M1 - 012006

ER -

Single-photon double K-shell ionization of low-Z atoms

Abstract

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