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Channelling of positrons and electrons
Experimental investigations of the influence of crystal structure on
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aligned alpha particles amorphous angle of incidence angular approximation atomic number axis backscattering Bloch waves boron Bragg angle calculated channelled ions clusters collision critical angle cross section curves damage rate dechannelling defects density dependence depth diffraction diffusion direction dislocation disorder displacement distance dose effect ejection emission energy loss energy spectra experimental experiments Firsov foil function gold high energy impact parameter implanted increase interaction interstitial ion beam ion bombardment ion energy ions implanted ions/cm2 irradiation J.Lindhard lattice layer Lindhard low energy measured microscope observed obtained orientation pattern peak penetration Phys planar channelling plane potential projectile protons radiation random range distribution region room temperature Rutherford scattering sample scattered ions scattering angle shown in fig shows silicon single crystal solid specimen sputtering yield stopping power surface target theoretical theory thickness tion trajectory transmission U.K. Dr University of Sussex vacancy values velocity wave width X-ray