Quantum rainbow channeling of positrons in very short carbon nanotubes
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2013
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This is a theoretical study of transmission of positrons of kinetic energies of 1 and 10 MeV through very short (11,9) single-wall carbon nanotubes of lengths of 200 and 560 nm, respectively. The needed continuum interaction potential of the positron and nanotube is obtained starting from the Molieres approximation of the Thomas-Fermi interaction potential of a positron and a nanotube atom. We calculate the classical and quantum angular distributions of transmitted positrons. In the classical calculations, the approach is via the equations of motion, and in the quantum calculations, the time-dependent Schrodinger equation is solved. The solutions of these equations are obtained numerically. In the quantum calculations, the initial beam is taken to be an ensemble of noninteracting Gaussian wave packets. The angular distributions are generated using the computer simulation method. Our analysis is concentrated on the rainbow effect, which is clearly seen in the angular distributions. The ...obtained classical and quantum rainbows are analyzed in detail and compared with each other.
Izvor:
Physical Review A, 2013, 88, 1Finansiranje / projekti:
- Fizika i hemija sa jonskim snopovima (RS-45006)
DOI: 10.1103/PhysRevA.88.012902
ISSN: 1050-2947
WoS: 000321833500007
Scopus: 2-s2.0-84880636580
Institucija/grupa
VinčaTY - JOUR AU - Petrović, Srđan M. AU - Ćosić, Marko AU - Nešković, Nebojša B. PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5585 AB - This is a theoretical study of transmission of positrons of kinetic energies of 1 and 10 MeV through very short (11,9) single-wall carbon nanotubes of lengths of 200 and 560 nm, respectively. The needed continuum interaction potential of the positron and nanotube is obtained starting from the Molieres approximation of the Thomas-Fermi interaction potential of a positron and a nanotube atom. We calculate the classical and quantum angular distributions of transmitted positrons. In the classical calculations, the approach is via the equations of motion, and in the quantum calculations, the time-dependent Schrodinger equation is solved. The solutions of these equations are obtained numerically. In the quantum calculations, the initial beam is taken to be an ensemble of noninteracting Gaussian wave packets. The angular distributions are generated using the computer simulation method. Our analysis is concentrated on the rainbow effect, which is clearly seen in the angular distributions. The obtained classical and quantum rainbows are analyzed in detail and compared with each other. T2 - Physical Review A T1 - Quantum rainbow channeling of positrons in very short carbon nanotubes VL - 88 IS - 1 DO - 10.1103/PhysRevA.88.012902 ER -
@article{ author = "Petrović, Srđan M. and Ćosić, Marko and Nešković, Nebojša B.", year = "2013", abstract = "This is a theoretical study of transmission of positrons of kinetic energies of 1 and 10 MeV through very short (11,9) single-wall carbon nanotubes of lengths of 200 and 560 nm, respectively. The needed continuum interaction potential of the positron and nanotube is obtained starting from the Molieres approximation of the Thomas-Fermi interaction potential of a positron and a nanotube atom. We calculate the classical and quantum angular distributions of transmitted positrons. In the classical calculations, the approach is via the equations of motion, and in the quantum calculations, the time-dependent Schrodinger equation is solved. The solutions of these equations are obtained numerically. In the quantum calculations, the initial beam is taken to be an ensemble of noninteracting Gaussian wave packets. The angular distributions are generated using the computer simulation method. Our analysis is concentrated on the rainbow effect, which is clearly seen in the angular distributions. The obtained classical and quantum rainbows are analyzed in detail and compared with each other.", journal = "Physical Review A", title = "Quantum rainbow channeling of positrons in very short carbon nanotubes", volume = "88", number = "1", doi = "10.1103/PhysRevA.88.012902" }
Petrović, S. M., Ćosić, M.,& Nešković, N. B.. (2013). Quantum rainbow channeling of positrons in very short carbon nanotubes. in Physical Review A, 88(1). https://doi.org/10.1103/PhysRevA.88.012902
Petrović SM, Ćosić M, Nešković NB. Quantum rainbow channeling of positrons in very short carbon nanotubes. in Physical Review A. 2013;88(1). doi:10.1103/PhysRevA.88.012902 .
Petrović, Srđan M., Ćosić, Marko, Nešković, Nebojša B., "Quantum rainbow channeling of positrons in very short carbon nanotubes" in Physical Review A, 88, no. 1 (2013), https://doi.org/10.1103/PhysRevA.88.012902 . .