Thin Films Lecture 3: Electron Beam Heating Technique
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Questions and Answers

The electron beam heating technique is based on the heat produced by high energy electron beam bombardment on the material to be ______

deposited

The electron beam is generated by an electron gun, which uses the thermionic emission of electrons produced by an incandescent ______

filament

Emitted electrons are accelerated by a high voltage potential of ______

kilovolts

A magnetic field is often applied to bend the electron ______

<p>trajectory</p> Signup and view all the answers

As electrons can be focalized, it is possible to obtain localized heating on the material to ______

<p>evaporate</p> Signup and view all the answers

Factors influencing the preparation of thin films through Electron beam heating include: Electron beam ______

<p>energy</p> Signup and view all the answers

Advantages of vacuum evaporation: High-purity films can be deposited from high-purity source material. Source of material to be vaporized may be a solid in any form and ______.

<p>purity</p> Signup and view all the answers

The properties of the material being deposited, such as its melting point and behavior under heating, influence the deposition process using electron beam heating technique. Deposition rate monitoring and control are relatively ______.

<p>easy</p> Signup and view all the answers

Deposition rate monitoring and control are relatively ______.

<p>easy</p> Signup and view all the answers

Vacuum evaporation is used to form optical interference coatings using high and low index of refraction materials, mirror coatings, decorative coatings, electrically conducting films and corrosion protective ______.

<p>coatings</p> Signup and view all the answers

Large-volume vacuum chambers are generally required to keep an appreciable distance between the hot source and the ______.

<p>substrate</p> Signup and view all the answers

Many compounds and alloy compositions can only be deposited with ______.

<p>difficulty</p> Signup and view all the answers

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