Rainbows in Channeling of 1 GeV Protons in a Bent Very Short (11,9) Single-wall Carbon Nanotube
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In this work we investigate theoretically the spatial and angular distributions of protons channeled in a bent very short (11, 9) single-wall carbon nanotube. The initial proton kinetic energy is 1 GeV and the nanotube length 7 mu m. The nanotube bending angle is varied between 0 and 2 mrad. The calculations are performed employing the theory of crystal rainbows. The interaction of the proton and a nanotubes atom is described by the Molieres approximation of the Thomas-Fermi interaction potential. The spatial and angular distributions of transmitted protons are generated by the computer simulation method using the numerical solution of the proton equations of motion in the transverse position plane. They are explained by the rainbow patterns in the final transverse position and transmission angle planes, being the images of the spatial and angular rainbow patterns in the impact parameter plane, respectively. These patterns are also obtained numerically. We discuss the possibility of ap...plying bent carbon nanotubes for guiding ion beams in accelerators.
Keywords:Ion channeling / carbon nanotubes / crystal rainbows
Source:International Journal of Nonlinear Sciences and Numerical Simulation, 2010, 11, 12, 1131-1143
- Ministry of Science and Technological Development of Serbia [151005B]