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Observation of Nuclear Excitation by Electron Transition in 197Au with Synchrotron X Rays and an Avalanche Photodiode

S. Kishimoto, Y. Yoda, M. Seto, Y. Kobayashi, S. Kitao, R. Haruki, T. Kawauchi, K. Fukutani, and T. Okano
Phys. Rev. Lett. 85, 1831 – Published 28 August 2000
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Abstract

We have succeeded in observing nuclear excitation by electron transition (NEET) in 197Au by a new method. Monochromatic x-rays of synchrotron radiation were used to ionize the K shell of gold atoms in a target foil. The internal-conversion electrons emitted from excited nuclei were detected with a silicon avalanche photodiode. At a photon energy of 80.989 keV, the NEET probability in 197Au was determined to be (5.0±0.6)×108 from a comparison of the event number per photon between NEET and the nuclear resonance at 77.351 keV.

  • Received 7 December 1999

DOI:https://doi.org/10.1103/PhysRevLett.85.1831

©2000 American Physical Society

Authors & Affiliations

S. Kishimoto1, Y. Yoda2, M. Seto3, Y. Kobayashi3, S. Kitao3, R. Haruki3, T. Kawauchi4, K. Fukutani4, and T. Okano4

  • 1Institute of Materials Structure Science, KEK, Tsukuba, Ibaraki 305-0801, Japan
  • 2Japan Synchrotron Radiation Research Institute, Mikazuki, Sayo, Hyogo 679-5198, Japan
  • 3Research Reactor Institute, Kyoto University, Kumatori, Sennan, Osaka 590-0494, Japan
  • 4Institute of Industrial Science, University of Tokyo, Roppongi, Minato-ku, Tokyo 106-8558, Japan

See Also

Electrons Quit Ignoring the Nucleus

David Voss
Phys. Rev. Focus 6, 8 (2000)

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Vol. 85, Iss. 9 — 28 August 2000

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