Energy shift of electronic X-rays emitted from pionic atoms

K. Ninomiya, H. Sugiura, Y. Kasamatsu, H. Kikunaga, N. Kinoshita, Y. Tani, H. Hasegawa, M. Yatsukawa, K. Takamiya, W. Sato, H. Matsumura, A. Yokoyama, K. Sueki, Y. Hamajima, T. Miura, A. Shinohara

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2 Citations (Scopus)


The electronic K X-ray energies of pionic atoms were precisely measured on elements ranging from zinc to lead with a low-energy photon detection system. Some differences between pionic and muonic atoms were found in the atomic-number (Z) dependence of the energy shift. In the pionic atoms, the energy shift gradually decreases with an increase in atomic number, which is opposite to the trend for muonic atoms. In the low-Z region investigated elements, the energy shifts of Kβ X-rays were obviously larger than those of K α X-rays.

Original languageEnglish
Pages (from-to)515-518
Number of pages4
JournalRadiochimica Acta
Issue number9-10
Publication statusPublished - 2005
Externally publishedYes


  • Electronic X-rays
  • Energy shift
  • Pionic X-rays
  • Pionic atom

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry


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