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Kazuhiko Ninomiya, Hironori Sugiura, Yoshitaka Kasamatsu, Hidetoshi Kikunaga, Koichi Takamiya, Wataru Sato, Hiroshi Matsumura, Akihiko Yokoyama, Keisuke Sueki, Taichi Miura, Yasunori Hamajima, Atsushi Shinohara

Energy shift of electronic X-rays emitted from pionic atoms

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 K_β X-rays were obviously larger than those of K_α X-rays.

Radiochimica Acta, Oldenbourg Wissenschaftsverlag

Print ISSN: 0033-8230
Volume: 93, 09/2005
Pages: 515 - 518

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