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Phys. Rev. A 55, 994–1006 (1997)

Shape of the two-photon-continuum emission from the 1s2s1S0 state in He-like krypton

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R. Ali, I. Ahmad, R. W. Dunford, D. S. Gemmell, M. Jung, and E. P. Kanter
Physics Division, Argonne National Laboratory, Argonne, Illinois 60439

P. H. Mokler
GSI, D-64291 Darmstadt, Germany

H. G. Berry and A. E. Livingston
Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556

S. Cheng and L. J. Curtis
Department of Physics and Astronomy, University of Toledo, Toledo, Ohio 43606

Received 16 September 1996; published in the issue dated February 1997

We report a measurement of the spectral distribution of photons from the two-photon decay of the 1s2s1S0 level in heliumlike krypton. In the experiment, a beam of Kr34+ ions was excited using a thin carbon foil and the two-photon decays were observed as coincidences in an array of x-ray detectors. An important part of this work was the measurement of the efficiency of the detection system as a function of photon energy. A Monte Carlo model of the experiment was used to compare the data with theoretical calculations and demonstrated good agreement with the nonrelativistic calculations for Z=36.

© 1997 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.55.994
DOI:
10.1103/PhysRevA.55.994
PACS:
32.70.Fw, 31.30.Jv, 31.10.+z, 32.30.Rj
 
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