Navegação Ciências Exatas e da Terra por Autor "Fadanelli Filho, Raul Carlos"
Resultados 1-12 de 12
-
Coulomb heating of channeled C+ and C2+ molecules in Si
(2008) [Artigo de periódico]Si x-ray and backscattering yields have been measured as a function of the C⁺ and C₂⁺ entrance angle along the Si ‹100› channel in an energy interval between 900 and 2200 keV/atom. A significant enhancement of the x-ray ... -
Coulomb heating of channeled H/sup + sub 2/ and H/sup + sub 3/ molecules in Si
(2004) [Artigo de periódico]Si-K x-ray and backscattering yields have been measured as a function of the projectile entrance angle for atomic and molecular (H2 + and H3 +) hydrogen ions channeling at kinetic energies of 150 keV per proton along the ... -
Energy deposition of H and He ion beams in hydroxyapatite films : a study with implications for ion-beam cancer therapy
(2014) [Artigo de periódico]Ion-beam cancer therapy is a promising technique to treat deep-seated tumors; however, for an accurate treatment planning, the energy deposition by the ions must be well known both in soft and hard human tissues. Although ... -
Energy loss of proton, [alpha] particle, and electron beams in hafnium dioxide films
(2009) [Artigo de periódico]The electronic stopping power, S, of HfO₂ films for proton and alpha particle beams has been measured and calculated. The experimental data have been obtained by the Rutherford backscattering technique and cover the range ... -
Experimental and theoretical study of the energy loss of Be and B ions in Zn
(2009) [Artigo de periódico]Energy-loss measurements and theoretical calculations for Be and B ions in Zn are presented. The experimental ion energies range from 40 keV/u to 1 MeV/u, which includes the energy-loss maximum and covers a lack of ... -
Experimental and theoretical study of the energy loss of C and O in Zn
(2011) [Artigo de periódico]We present a combined experimental-theoretical study of the energy loss of C and O ions in Zn in the energy range 50–1000 keV/amu. This contribution has a double purpose, experimental and theoretical. On the experimental ... -
Ground- and excited-state scattering potentials for the stopping of protons in an electron gas
(2019) [Artigo de periódico]The self-consistent electron–ion potential V(r) is calculated for H+ ions in an electron gas system as a function of the projectile energy to model the electronic stopping power for conduction-band electrons. The results ... -
Impact-parameter dependence of the energy loss of fast molecular clusters in hydrogen
(2008) [Artigo de periódico]The electronic energy loss of molecular clusters as a function of impact parameter is far less understood than atomic energy losses. For instance, there are no analytical expressions for the energy loss as a function of ... -
Interplay between the Coulomb explosion and vicinage effects studied using H/sub 2//sup +/ molecules under channeling conditions
(2006) [Artigo de periódico]The aim of this work is to investigate how the mean energy loss and straggling due to H2 + molecules interacting with silicon are affected by the Coulomb explosion and vicinage effects. To that end, a SIMOX-type sample ... -
Neutralization and wake effects on the Coulomb explosion of swift H2+ ions traversing thin films
(2015) [Artigo de periódico]The Coulomb explosion of small cluster beams can be used to measure the dwell time of fragments traversing amorphous films. Therefore, the thickness of thin films can be obtainedwith the so-called Coulomb depth profiling ... -
Nonlinear ion-stopping calculations for a classical free-electron gas at high projectile energies
(2023) [Artigo de periódico]In this work, we solved the classical equations of motion and Poisson equation self-consistently, equivalent to the nonlinear Vlasov-Poisson equation, for a projectile moving in a static free-electron gas to calculate the ... -
Stopping power of cluster ions in a free-electron gas from partial-wave analysis
(2018) [Artigo de periódico]A nonlinear model for the stopping power of cluster ions based on partial-wave analysis is developed through the generalization of the induced density approach (IDA) model for the interaction of homo-and heteronuclear ...
