Plasma Sources

Description: Test your knowledge on Plasma Sources, their types, applications, and characteristics.
Number of Questions: 15
Created by:
Tags: plasma physics plasma sources types of plasma sources applications of plasma sources
Attempted 0/15 Correct 0 Score 0

Which of the following is NOT a type of plasma source?

  1. DC glow discharge

  2. Radio frequency discharge

  3. Microwave discharge

  4. Laser-induced plasma


Correct Option: D
Explanation:

Laser-induced plasma is not a type of plasma source. It is a technique for generating plasma using a laser.

What is the principle behind the operation of a DC glow discharge plasma source?

  1. Collisional ionization

  2. Secondary electron emission

  3. Thermionic emission

  4. Photoionization


Correct Option: A
Explanation:

In a DC glow discharge plasma source, plasma is generated by collisional ionization of gas atoms by energetic electrons.

Which type of plasma source is commonly used in the production of semiconductors?

  1. DC glow discharge

  2. Radio frequency discharge

  3. Microwave discharge

  4. Inductively coupled plasma


Correct Option: D
Explanation:

Inductively coupled plasma (ICP) sources are commonly used in the production of semiconductors due to their high plasma density and low contamination.

What is the primary application of microwave discharge plasma sources?

  1. Lighting

  2. Material processing

  3. Plasma etching

  4. Medical applications


Correct Option: B
Explanation:

Microwave discharge plasma sources are primarily used in material processing applications, such as etching, deposition, and surface modification.

Which type of plasma source is characterized by a high degree of ionization and a low electron temperature?

  1. DC glow discharge

  2. Radio frequency discharge

  3. Microwave discharge

  4. Helicon plasma source


Correct Option: D
Explanation:

Helicon plasma sources are characterized by a high degree of ionization and a low electron temperature due to the efficient coupling of radio frequency power to the plasma.

What is the main advantage of using radio frequency discharge plasma sources over DC glow discharge plasma sources?

  1. Higher plasma density

  2. Lower electron temperature

  3. Reduced electrode erosion

  4. Increased ionization efficiency


Correct Option: C
Explanation:

Radio frequency discharge plasma sources have reduced electrode erosion compared to DC glow discharge plasma sources due to the absence of a direct current path between the electrodes.

Which type of plasma source is commonly used in the generation of high-power plasma jets?

  1. DC glow discharge

  2. Radio frequency discharge

  3. Microwave discharge

  4. Pulsed plasma source


Correct Option: D
Explanation:

Pulsed plasma sources are commonly used in the generation of high-power plasma jets due to their ability to produce short, intense pulses of plasma.

What is the primary mechanism for plasma generation in a radio frequency discharge plasma source?

  1. Collisional ionization

  2. Secondary electron emission

  3. Thermionic emission

  4. Resonant absorption of electromagnetic waves


Correct Option: D
Explanation:

In a radio frequency discharge plasma source, plasma is generated by the resonant absorption of electromagnetic waves by the gas atoms.

Which type of plasma source is commonly used in the production of flat panel displays?

  1. DC glow discharge

  2. Radio frequency discharge

  3. Microwave discharge

  4. Capacitively coupled plasma


Correct Option: D
Explanation:

Capacitively coupled plasma (CCP) sources are commonly used in the production of flat panel displays due to their ability to generate uniform and low-pressure plasma.

What is the main advantage of using microwave discharge plasma sources over radio frequency discharge plasma sources?

  1. Higher plasma density

  2. Lower electron temperature

  3. Reduced electrode erosion

  4. Increased ionization efficiency


Correct Option: A
Explanation:

Microwave discharge plasma sources have higher plasma density compared to radio frequency discharge plasma sources due to the more efficient coupling of microwave power to the plasma.

Which type of plasma source is commonly used in the generation of plasma for fusion energy research?

  1. DC glow discharge

  2. Radio frequency discharge

  3. Microwave discharge

  4. Tokamak


Correct Option: D
Explanation:

Tokamaks are commonly used in the generation of plasma for fusion energy research due to their ability to confine high-temperature plasma for extended periods of time.

What is the primary mechanism for plasma generation in a DC glow discharge plasma source?

  1. Collisional ionization

  2. Secondary electron emission

  3. Thermionic emission

  4. Photoionization


Correct Option: A
Explanation:

In a DC glow discharge plasma source, plasma is generated by collisional ionization of gas atoms by energetic electrons.

Which type of plasma source is commonly used in the production of solar cells?

  1. DC glow discharge

  2. Radio frequency discharge

  3. Microwave discharge

  4. Plasma enhanced chemical vapor deposition


Correct Option: D
Explanation:

Plasma enhanced chemical vapor deposition (PECVD) sources are commonly used in the production of solar cells due to their ability to deposit thin films with high uniformity and low defect density.

What is the primary advantage of using inductively coupled plasma (ICP) sources over DC glow discharge plasma sources?

  1. Higher plasma density

  2. Lower electron temperature

  3. Reduced electrode erosion

  4. Increased ionization efficiency


Correct Option: A
Explanation:

ICP sources have higher plasma density compared to DC glow discharge plasma sources due to the more efficient coupling of radio frequency power to the plasma.

Which type of plasma source is commonly used in the generation of plasma for plasma etching?

  1. DC glow discharge

  2. Radio frequency discharge

  3. Microwave discharge

  4. Capacitively coupled plasma


Correct Option: D
Explanation:

Capacitively coupled plasma (CCP) sources are commonly used in the generation of plasma for plasma etching due to their ability to generate uniform and low-pressure plasma.

- Hide questions