Deep-core photoionization of krypton atoms below and above the 1s ionization threshold

Boudjemia, N.; Jänkälä, K.; Püttner, R.; Gejo, T.; Journel, L.; Kohmura, Y.; Huttula, M.; Piancastelli, M. N.; Simon, M.; Oura, M. (2020-05-04)
 
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https://doi.org/10.1103/PhysRevA.101.053405

Boudjemia, N.
Jänkälä, K.
Püttner, R.
Gejo, T.
Journel, L.
Kohmura, Y.
Huttula, M.
Piancastelli, M. N.
Simon, M.
Oura, M.
American Physical Society
04.05.2020

Boudjemia, N., Jänkälä, K., Püttner, R., Gejo, T., Journel, L., Kohmura, Y., Huttula, M., Piancastelli, M., Simon, M., Oura, M. (2020) Deep-core photoionization of krypton atoms below and above the 1s ionization threshold. Phys. Rev. A 101(5), 053405, https://doi.org/10.1103/PhysRevA.101.053405

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© 2020 American Physical Society.
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doi:https://doi.org/10.1103/PhysRevA.101.053405
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https://urn.fi/URN:NBN:fi-fe2020052839563
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Abstract

Electronic relaxation of atomic Kr below and above the 1s ionization threshold is investigated experimentally using hard x-ray photoelectron spectroscopy. The experimental results are interpreted with the aid of relativistic Dirac-Fock calculations. The 1s orbital core-hole lifetime is extracted and the satellite’s structures accompanying the photoelectron main line are assigned. Auger spectra recorded below and above the K edge are also investigated. In particular, the Auger cascade originating from vacancies of different origin in the L shell is analyzed in great detail. Competition between radiative KL versus nonradiative KLL Auger emission is emphasized.

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