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28 March 2024
 
  » pubmed » pmid17155267

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Anisotropic x-ray emission from heliumlike Fe24+ ions aligned by resonant coherent excitation with a periodic crystal potential
T Azuma ; Y Takabayashi ; C Kondo ; T Muranaka ; K Komaki ; Y Yamazaki ; E Takada ; T Murakami ;
Date 6 Oct 2006
Journal Phys Rev Lett, 97 (14), 145502
AbstractWe have measured deexcitation x rays emitted from the resonant coherently excited 2(1)P(1) state of heliumlike Fe24+ ions of 423 MeV/amu, planar channeling through a Si crystal. Large anisotropy in the angular distribution of deexcitation x-ray emission is observed: the x-ray emission in the direction parallel to the channeling plane is favored by a factor of 2 compared to the perpendicular direction. This anisotropy originates from the direction of the periodic crystal field, which populates specific m states in resonant coherent excitation and aligns the excited states.
Source PubMed, pmid17155267
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