🗊Презентация Ion Scattering Spectroscopy (ISS)

Категория: Технология
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Ion Scattering Spectroscopy (ISS), слайд №1Ion Scattering Spectroscopy (ISS), слайд №2Ion Scattering Spectroscopy (ISS), слайд №3Ion Scattering Spectroscopy (ISS), слайд №4Ion Scattering Spectroscopy (ISS), слайд №5Ion Scattering Spectroscopy (ISS), слайд №6Ion Scattering Spectroscopy (ISS), слайд №7Ion Scattering Spectroscopy (ISS), слайд №8
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Ion Scattering Spectroscopy Student Salamatova U. V. Group 33339/1
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Ion Scattering Spectroscopy Student Salamatova U. V. Group 33339/1

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What is Ion Scattering Spectroscopy? Ion scattering spectroscopy (ISS), is a surface-sensitive analytical technique used to characterize the chemical and structural makeup of materials. Ion scattering spectroscopy often refers to the use of low (LEIS) energy ions in the range of 0.5 to 10 keV. Low-energy ion scattering spectroscopy (LEIS),
Описание слайда:
What is Ion Scattering Spectroscopy? Ion scattering spectroscopy (ISS), is a surface-sensitive analytical technique used to characterize the chemical and structural makeup of materials. Ion scattering spectroscopy often refers to the use of low (LEIS) energy ions in the range of 0.5 to 10 keV. Low-energy ion scattering spectroscopy (LEIS),

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Technique Ions are directed onto a sample and the energy of the backscattered projectiles is determined. The ionized particles are single atoms usually in a single positive charge state. LEIS typically uses a scattering angle around 135°
Описание слайда:
Technique Ions are directed onto a sample and the energy of the backscattered projectiles is determined. The ionized particles are single atoms usually in a single positive charge state. LEIS typically uses a scattering angle around 135°

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General experimental setup for LEIS.
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General experimental setup for LEIS.

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Diagram of an electrostatic analyzer in the hemispherical geometry Only ions of a selected energy pass through to the detector. Using electrostatic deflectors to direct only ions of a particular energy range into a collector, while all other ions are redirected.
Описание слайда:
Diagram of an electrostatic analyzer in the hemispherical geometry Only ions of a selected energy pass through to the detector. Using electrostatic deflectors to direct only ions of a particular energy range into a collector, while all other ions are redirected.

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Experimental geometry for ion scattering spectroscopy
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Experimental geometry for ion scattering spectroscopy

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Calculations The equation below shows how the energy of a scattered ion peak is related to the other relevant factors. ES = Kinetic energy of the scattered ion M1 = Relative atomic mass of the scattered ion E0 = Kinetic energy of the primary ion beam M2 = Relative atomic mass of the scattering surface atom θ = Scattering angle
Описание слайда:
Calculations The equation below shows how the energy of a scattered ion peak is related to the other relevant factors. ES = Kinetic energy of the scattered ion M1 = Relative atomic mass of the scattered ion E0 = Kinetic energy of the primary ion beam M2 = Relative atomic mass of the scattering surface atom θ = Scattering angle

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Thanks for attention!
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Thanks for attention!

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