scholarly journals Inelastic energy loss of Ar ions scattered Al2O3 surface under grazing incidence

2021 ◽  
Vol 22 (2) ◽  
pp. 255-259
Author(s):  
A.S. Ashirov ◽  
M.K. Qurbanov ◽  
I.U. Tangribergenov ◽  
M.K. Karimov ◽  
K.U. Otabaeva
Keyword(s):  
Energy Loss ◽  
Small Angle ◽  
Grazing Incidence ◽  
Binary Collision ◽  
Geometrical Parameters ◽  
Angle Of Incidence ◽  
Ion Scattering ◽  
Inelastic Energy Loss ◽  
Ion Scattering Spectroscopy ◽  
Collision Approximation

In this paper presents the investigation of the surface Al2O3  by ion  scattering spectroscopy. The trajectory of small angle scattered ions calculated by the method of binary collision approximation.  It was found dependence of inelastic energy loss and trajectories of scattered ions. The value of inelastic energy loss scattered ions almost depend to the angle of incidence and the geometrical parameters of surface semichannels.

THE COLLIDING PARTICLES MASS RATIO INFLUENCE ON PECULIARITIES OF LOW-ENERGY ION NEAR-SURFACE IMPLANTATION AT CHANNELING CONDITIONS

2018 ◽  
Vol 20 (4) ◽  
pp. 265-274
Author(s):  
F.F. Umarov ◽  
A.M. Rasulov ◽  
A.A. Dzhurakhalov
Keyword(s):  
Energy Loss ◽  
Normal Incidence ◽  
Binary Collision ◽  
Low Energy ◽  
Main Peak ◽  
Mass Ratio ◽  
Near Surface ◽  
Collision Approximation ◽  
Thin Crystal ◽  
Depth Distributions

In the present work the peculiarities of ion implantation and colliding particles mass ratio influence on the ranges, energy loss and profiles of distribution for 1−5 keV P+ ions channelling in Si(110) and SiC(110) at normal incidence, and 1 keV Be+ and Se+ ions in GaAs(100), as well as 5 keV Ar+ and Kr+ on Cu(001) surface at glancing incidence are carried out by computer simulation in binary collision approximation. It is shown that for paraxial part of a beam the main contribution to the total energy loss comes from inelastic ones. It has been established that the energy loss of ions transmitted through thin crystal and depth profile distributions depend on width of the channel and mass ratio of colliding atoms. It was shown that at grazing surface channeling conditions the main peak of the implanted depth distributions is considerably shallow, the range for Se+ ions is shallower and the half-width of profile for these ions is narrow than that for Be+ ions. The results allow one to select the optimum for implanted depth distributions with demanded shape at narrow near-surface area of crystals obtaining.

INVESTIGATION OF DEFECT INP(001) SURFACE BY THE METHOD OF LOW ENERGY ION SCATTERING

2019 ◽  
Vol 21 (6) ◽  
pp. 356-361
Author(s):  
M. Karimov ◽  
U. Kutliev ◽  
M. Otaboev
Keyword(s):  
Surface Layer ◽  
Defect Structure ◽  
Binary Collision ◽  
Low Energy ◽  
Ion Scattering ◽  
Energy Distributions ◽  
Low Energy Ion Scattering ◽  
Energy Part ◽  
Grazing Scattering ◽  
Collision Approximation

Investigation of grazing scattering of 3 keV Ar+ and Xe+ ions from the defect surface InP(001) are reported. Computer simulations based on the binary collision approximation permit one to carry out a quantitative analysis of data. It is determined that energy distributions of reflected ions directly depend on the defect structure of the topmost surface layer, and these defects form some peaks in low energy part of energy distribution.

scholarly journals Near-surface relaxation structure of annealed block copolymer film on Si substrates examined by grazing-incidence small-angle scattering utilizing soft X-rays

2011 ◽  
Vol 44 (2) ◽  
pp. 380-384 ◽  
Author(s):  
Hiroshi Okuda ◽  
Kohki Takeshita ◽  
Shojiro Ochiai ◽  
Shin-ichi Sakurai ◽  
Yoshinori Kitajima
Keyword(s):  
Block Copolymer ◽  
Small Angle ◽  
Microphase Separation ◽  
Grazing Incidence ◽  
Sample Surface ◽  
Surface Relaxation ◽  
Angle Of Incidence ◽  
X Rays ◽  
Near Surface ◽  
Si Substrates

Two-dimensional grazing-incidence small-angle X-ray scattering (GISAXS) measurements of SEBS8 block copolymer films deposited on Si(001) substrates have been performed to demonstrate depth-sensitive GISAXS utilizing soft X-rays of 1.77 keV. Remarkable elongation of the Bragg spots in theqzdirection, corresponding to microphase separation, was observed for an angle of incidence close to the critical angle. The elongation was explained in terms of the penetration depth, which limits the effective size in the direction perpendicular to the sample surface. Lattice distortion near the surface was confirmed.

scholarly journals Grazing-incidence small-angle neutron scattering from structures below an interface

2017 ◽  
Vol 50 (4) ◽  
pp. 1066-1074 ◽  
Author(s):  
Shirin Nouhi ◽  
Maja S. Hellsing ◽  
Vassilios Kapaklis ◽  
Adrian R. Rennie
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Grazing Angle ◽  
Grazing Incidence ◽  
Angle Of Incidence ◽  
Model Calculations ◽  
Self Organized ◽  
Incoming Beam ◽  
Sample Structure

Changes of scattering are observed as the grazing angle of incidence of an incoming beam increases and probes different depths in samples. A model has been developed to describe the observed intensity in grazing-incidence small-angle neutron scattering (GISANS) experiments. This includes the significant effects of instrument resolution, the sample transmission, which depends on both absorption and scattering, and the sample structure. The calculations are tested with self-organized structures of two colloidal samples with different size particles that were measured on two different instruments. The model allows calculations for various instruments with defined resolution and can be used to design future improved experiments. The possibilities and limits of GISANS for different studies are discussed using the model calculations.

scholarly journals Study of Ion Scattering Process by the Method of Binary Collision Approximation

2017 ◽  
Vol Volume-1 (Issue-4) ◽  
pp. 284-288
Author(s):  
Kutliev Uchkun Otoboevich ◽  
Karimov Muxtor Karimberganovich ◽  
Narimonov Nurbek Davronbekovich ◽  
Keyword(s):  
Binary Collision ◽  
Scattering Process ◽  
Ion Scattering ◽  
Binary Collision Approximation ◽  
Collision Approximation
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