Quantum Channeling Effects for 1 MeV Positrons | Zendy

R. Haakenaasen | Zendy; Lene Vestergaard Hau | Zendy; J. A. Golovchenko | Zendy; J. C. Palathingal | Zendy; Jun Peng | Zendy; P. AsokaKumar | Zendy; K. G. Lynn | Zendy

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Quantum Channeling Effects for 1 MeV Positrons

Author(s) -

R. Haakenaasen,

Lene Vestergaard Hau,

J. A. Golovchenko,

J. C. Palathingal,

Jun Peng,

P. AsokaKumar,

K. G. Lynn

Publication year - 1995

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.75.1650

Subject(s) - physics , coherence (philosophical gambling strategy) , positron , annihilation , atomic physics , diffraction , coherence length , electron , crystal (programming language) , beam (structure) , quantum , nuclear physics , condensed matter physics , optics , superconductivity , quantum mechanics , computer science , programming language

A high resolution angular study of positrons transmitted through a thin single crystal of Si clearly reveals a detailed fine structure due to strong quantum channeling effects. The beam transmitted in the forward direction displays many features associated with dynamical diffraction effects and long coherence lengths. Calculations are presented showing that in flight annihilation of channeled positrons can serve as a solid state probe of electron and spin densities in thin crystals.

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