2017
DOI: 10.1103/physreva.95.020701
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Ubiquitous diffraction resonances in positronium formation from fullerenes

Abstract: Due to the dominant electron capture by positrons from the molecular wall and the spatial dephasing across the wall-width, a powerful diffraction effect universally underlies the positronium (Ps) formation from fullerenes. This results into trains of resonances in the Ps formation cross section as a function of the positron beam energy, producing uniform structures in recoil momenta in analogy with classical single-slit diffraction fringes in the configuration space. The prediction opens a hitherto unknown ave… Show more

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Cited by 8 publications
(6 citation statements)
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“…In conclusion, we extend our previous calculation [45] and compare the Ps formation cross sections in the CDW-FS method among electron captures from various electronic levels as well as between C 60 and C 240 . The molecular ground state structures are modeled by a simple but successful LDA methodology that used LB94 exchangecorrelation functional.…”
Section: Discussionsupporting
confidence: 70%
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“…In conclusion, we extend our previous calculation [45] and compare the Ps formation cross sections in the CDW-FS method among electron captures from various electronic levels as well as between C 60 and C 240 . The molecular ground state structures are modeled by a simple but successful LDA methodology that used LB94 exchangecorrelation functional.…”
Section: Discussionsupporting
confidence: 70%
“…Also, the effect discussed in this paper should be universal for Ps formation from nanosystems, including metal (alkaline earth, noble, coinage) clusters, carbon nanotubes, or even quantum dots that, like fullerenes, confine finite-sized electron gas. The work further motivates a new research direction to apply Ps formation spectroscopy to gas-phase nanosystems which began with our earlier published research [45,46], since fullerenes currently enjoy significant attraction in precision measurements. Fullerenes [65] and metallic nanoparticles [43,66] are nowadays available in gas-phase.…”
Section: Discussionmentioning
confidence: 86%
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