Analysis of Neon by particle accelerators

[No Value] A. Banse-Lefebre, Gaston Moss Deconninck, [No Value] M. Dubus, Guy Terwagne

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    Résumé

    Natural neon has three stable isotopes, 20Ne (90.92%), 21Ne (0,257%) and 22Ne (8.8%) which can be detected by nuclear reactions. An experiment on the elastic scattering of 2 MeV4He ions from a solid neon target at 5.5 K is described, the spectrum is correctly fitted with a calculation using the Rutherford scattering cross section. Most applications are in the analysis of neon implanted metals. Depth profiling is possible by nuclear resonant reactions. A review is given of the main resonances used; in each case prompt λ-rays are detected. In the analysis of 20Ne, the 20Ne(p, λ)21Na∗ reaction has a narrow resonance at 1168,8 keV which can be used with detection of annihilation λ-rays from the β+ decay of 21Na∗.
    The 22Ne(p, λ)23Na∗ reaction has a resonance at 1005 keV yielding 2640 keV λ-rays, the half-line (120 fs) is short enough to allow Doppler shift analysis.
    PIXE using solid state detectors has few applications but dispersive X-ray spectroscopy of neon shows wide broadening of X-rays lines. This phenomenon is observed in metals implanted with neon ions. It can be used for the estimation of the pressure inside the bubbles formed by implantation.
    langue originaleAnglais
    Pages (de - à)205-208
    Nombre de pages4
    journalNuclear instruments and methods in physics research B
    Volume66
    Numéro de publication1/2
    Etat de la publicationPublié - 1992

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