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A study of the dechanneling of protons in SiC polytype crystals in the energy range Ep=400-650 keV
(Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 2004)
In the present work, the energy spectra of protons channeled along the (0 0 0 1) axis of SiC polytype crystals (namely 4H and 6H) in the energy range E-P = 400-650 keV, in the backscattering geometry, were taken and analyzed. ...
Rainbows in transmission of high energy protons through carbon nanotubes
(European Physical Journal B. Condensed Matter and Complex Systems, 2005)
We investigate theoretically the angular distribution and the rainbows in the case of 1 GeV protons transmitted through the 1 mu m long rope of ( 10, 10) single-wall carbon nanotubes. The angular distribution of transmitted ...
Rainbows with a LT〈1 1 1〉GT Si thin crystal
(European Physical Journal B. Condensed Matter and Complex Systems, 2000)
This study is devoted to the transmission of Ne10+ ions through a (111) Si thin crystal. The ion energy in 60 MeV and the crystal thickness is varied from 159 to 478 atomic layers, i.e., within the first rainbow cycle. The ...
Influence of the dynamical image potential on the rainbows in ion channeling through short carbon nanotubes
(Physical Review A, 2006)
We investigate the influence of the dynamic polarization of the carbon valence electrons on the angular distributions of protons channeled through short (11,9) single-wall carbon nanotubes at speeds of 3 and 5 a.u. ...
Proton channeling through long chiral carbon nanotubes: The rainbow route to equilibration
(Physics Letters A, 2008)
In this work we investigate the rainbows appearing in channeling of 1 GeV protons through the long (11, 9) single-wall carbon nanotubes. The nanotube length is varied from 10 to 500 pm. The angular distributions of channeled ...
Angular distributions of high energy protons channeled in long (10,10) single-wall carbon nanotubes
(Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 2009)
In this work we study the angular distributions of 1 GeV protons channeled in long (10,10) single-wall carbon nanotubes. The nanotube length, L, is varied between 10 and 100 mu m. The angular distributions of channeled ...
Superfocusing of channeled protons and crystal rainbows
(Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 2009)
This study is devoted to the effect of superfocusing of protons having the energy of 2 MeV in a LT 1 0 0 GT channel of a Si crystal. The analysis is performed by the theory of crystal rainbows. We analyze the superfocusing ...
Gompertz type dechanneling functions for protons in 〈1 0 0〉, 〈1 1 0〉 and 〈1 1 1〉 Si crystal channels
(Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 2007)
In this work the energy dependences of the Gompertz type sigmoidal dechanneling function parameters for protons in LT 1 0 0 GT , LT 1 1 0 GT and LT 1 1 1 GT Si crystal channels is investigated theoretically. The proton ...
Hyperchanneling of Ne(10+) Ions Through the Thick LT 111 GT Si Crystals
(2008)
In this work we investigate the angular distributions of Ne(10+) ions hyperchanneled along the LT 111 GT direction in a thick silicon crystals as a function of the reduced crystal thickness. The ion energy is 60 MeV and ...
Axial Channeling of High Energy Protons in Carbon Nanotubes
(2008)
We have studied theoretically the angular distributions of 1 GeV protons channeled through the long (10, 0) single-wall carbon nanotubes. The nanotube length is varied between 10 and 80 mu m. The angular distribution of ...