Bremsstrahlung emission in α-decay of210Po

T. Ohtsuki, J. Kasagi, N. Kasajima, H. Yamazaki, H. Yuki, M. Yukishima

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    7 Citations (Scopus)


    Bremsstrahlung photons associated with the α-decay of 210Po were measured in α-γ coincidence measurements with Si and Ge detectors. Emission probabilities of the bremsstrahlung deduced for 210Po were 10-11-10-12/keV/sr/decay for 100≤Eγ≤600 keV. It was found that the bremsstrahlung yields are much smaller than those predicted by a Coulomb acceleration model. This suggests that α-particles also emit photons inside the barrier. The bremsstrahlung spectrum was compared with a quasi-classical calculation in which the bremsstrahlung emission in tunneling motion of α-particles is taken into account. It is shown that the data can be interpreted as a consequence of destructive interference of radiative amplitudes outside the Coulomb barrier with those in tunneling.

    Original languageEnglish
    Pages (from-to)123-126
    Number of pages4
    JournalJournal of Radioanalytical and Nuclear Chemistry
    Issue number1
    Publication statusPublished - 1999 Jan 1

    ASJC Scopus subject areas

    • Analytical Chemistry
    • Nuclear Energy and Engineering
    • Radiology Nuclear Medicine and imaging
    • Pollution
    • Spectroscopy
    • Public Health, Environmental and Occupational Health
    • Health, Toxicology and Mutagenesis


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