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Title: Double 1s shell ionization of Si induced in collisions with 1-3-MeV protons

Abstract

The double 1s ionization of Si induced in collisions with protons was studied by measuring the K x-ray emission of a solid Si target ionized by the impact of 1-3-MeV protons. In order to resolve the hypersatellite contributions corresponding to the radiative decay of the double 1s vacancy state, a high-resolution crystal spectrometer was employed yielding sub-eV energy resolution. From the intensity of the measured hypersatellite lines double 1s ionization cross sections for the studied collisions were determined. Experimental values were compared with the theoretical ones obtained within the independent electron framework employing single electron ionization probabilities calculated with the semiclassical approach. This comparison suggests a sequential two step model for the double 1s ionization which was additionally confirmed by four body classical trajectory Monte Carlo calculations.

Authors:
;  [1];  [2]
  1. J. Stefan Institute, P.O. Box 3000, SI-1001, Ljubljana, Slovenia and Physics Department, University of Fribourg, CH-1700 Fribourg (Switzerland)
  2. (ATOMKI), H-4001 Debrecen, P.O. Box 51 (Hungary)
Publication Date:
OSTI Identifier:
20786303
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 72; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevA.72.062704; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; CATIONS; COMPARATIVE EVALUATIONS; CROSS SECTIONS; ELECTRONS; EMISSION SPECTRA; ENERGY RESOLUTION; FOUR-BODY PROBLEM; HYDROGEN IONS; ION-ATOM COLLISIONS; IONIZATION; MEV RANGE; MONTE CARLO METHOD; PROTONS; RADIATIVE DECAY; SEMICLASSICAL APPROXIMATION; SILICON; VACANCIES; X RADIATION; X-RAY SPECTRA

Citation Formats

Kavcic, M., Toekesi, K., and Institute of Nuclear Research of the Hungarian Academy of Science. Double 1s shell ionization of Si induced in collisions with 1-3-MeV protons. United States: N. p., 2005. Web. doi:10.1103/PHYSREVA.72.0.
Kavcic, M., Toekesi, K., & Institute of Nuclear Research of the Hungarian Academy of Science. Double 1s shell ionization of Si induced in collisions with 1-3-MeV protons. United States. doi:10.1103/PHYSREVA.72.0.
Kavcic, M., Toekesi, K., and Institute of Nuclear Research of the Hungarian Academy of Science. Thu . "Double 1s shell ionization of Si induced in collisions with 1-3-MeV protons". United States. doi:10.1103/PHYSREVA.72.0.
@article{osti_20786303,
title = {Double 1s shell ionization of Si induced in collisions with 1-3-MeV protons},
author = {Kavcic, M. and Toekesi, K. and Institute of Nuclear Research of the Hungarian Academy of Science},
abstractNote = {The double 1s ionization of Si induced in collisions with protons was studied by measuring the K x-ray emission of a solid Si target ionized by the impact of 1-3-MeV protons. In order to resolve the hypersatellite contributions corresponding to the radiative decay of the double 1s vacancy state, a high-resolution crystal spectrometer was employed yielding sub-eV energy resolution. From the intensity of the measured hypersatellite lines double 1s ionization cross sections for the studied collisions were determined. Experimental values were compared with the theoretical ones obtained within the independent electron framework employing single electron ionization probabilities calculated with the semiclassical approach. This comparison suggests a sequential two step model for the double 1s ionization which was additionally confirmed by four body classical trajectory Monte Carlo calculations.},
doi = {10.1103/PHYSREVA.72.0},
journal = {Physical Review. A},
number = 6,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}