Inst ToolsInst ToolsInst Tools
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Search
  • Books
  • Software
  • Projects
  • Process
  • Tools
  • Basics
  • Formula
  • Power Plant
  • Root Cause Analysis
  • Electrical Basics
  • Animation
  • Standards
  • 4-20 mA Course
  • Siemens PLC Course
Reading: Auger Electron Spectroscopy
Share
Notification Show More
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • Design
  • PLC
  • Interview
  • Control System
Search
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > Multiple Choice Questions > Auger Electron Spectroscopy

Auger Electron Spectroscopy

Last updated: November 27, 2021 5:37 pm
Editorial Staff
Multiple Choice Questions
No Comments
Share
5 Min Read
SHARE

Auger Electron Spectroscopy

1. The characterisation of auger spectroscopy can be achieved up to which of the following depths?

a) 1 nm
b) 2 nm
c) 4 nm
d) 8 nm

Answer: a

Explanation: The characterisation of auger spectroscopy can be achieved up to a depth of 1nm. Best instruments can characterise few nm.

2. Auger electron spectroscopy can be used for surface chemical analysis in a way similar to which of the following?

a) ESCA
b) SIMS
c) ISS
d) Ion spectroscopy

Answer: a

Explanation: Auger electron spectroscopy can be used for surface chemical analysis in a way similar to ESCA. ESCA is also known as X-ray photoelectron spectroscopy.

3. AES is limited when it comes to very high resolution studies.

a) True
b) False

Answer: a

Explanation: AES is limited when it comes to very high resolution studies. It is very characteristic for various elements.

4. Qualitative chemical analysis is very often performed using which of the following?

a) ESCA
b) SIMS
c) AES
d) Ion spectroscopy

Answer: c

Explanation: Qualitative chemical analysis is very often performed using AES. Auger nomenclature follows the old x-ray notation.

5. Electron ionization can produce which of the following?

a) ESCA electron
b) Auger electron
c) Ion
d) Photon

Answer: b

Explanation: Electron ionization can produce Auger electron. Photo-ionisation can also produce Auger electron.

6. Electron ionisation can produce ESCA electrons.

a) True
b) False

Answer: b

Explanation: Electron ionisation cannot produce ESCA electrons. It can produce only Auger electrons.

7. Which of the following is an Auger transition starting from a hole in 1s levels which would be filled up from the 2p level?

a) KLM transition
b) KLL transition
c) LMN transition
d) LLM transition

Answer: b

Explanation: KLL transition is an Auger transition starting from a hole in 1s levels which would be filled up from the 2p level. 2p electron would also be emitted.

8. In ESCA process, the photon ejects which of the following?

a) 1s electron
b) 1p electron
c) 2s electron
d) 2p electron

Answer: a

Explanation: In ESCA process, the photon ejects 1s electron. For X-ray, an electron drops from the 2p orbit.

9. In Auger process, an electron drops to fill which of the following?

a) 1s hole
b) 1p hole
c) 2s hole
d) 2p hole

Answer: a

Explanation: In Auger process, an electron drops to fill 1s hole. It expels a 2p electron.

10. Auger electron spectroscopy involves the irradiation of the surface to be analysed with a beam of electrons of energy in the _________ range.

a) 1-2 KeV
b) 2-4 KeV
c) 4-8 KeV
d) 1-8 KeV

Answer: a

Explanation: Auger electron spectroscopy involves the irradiation of the surface to be analysed with a beam of electrons of energy in the 1-2 KeV range. Auger and X-ray emission are competitive processes.

11. In Auger spectroscopy, beam currents are typically _____ in a beam of diameter 0.5mm.

a) 5-10 µA
b) 5-20 µA
c) 5-30 µA
d) 5-50 µA

Answer: d

Explanation: In Auger spectroscopy, beam currents are typically 5-50 µA in a beam of diameter 0.5mm. Auger and X-ray emission are competitive processes.

12. Which of the following is the detection limit of Auger Electron Spectroscopy?

a) 0.1% monolayer
b) 0.5% monolayer
c) 1% monolayer
d) 2% monolayer

Answer: b

Explanation: The detection limit of AES is 0.5% monolayer. It has 0.5µ x-y resolution.

13. Which of the following denotes the sample destruction that occurs in Auger electron spectroscopy?

a) None in 95% of sample
b) None in 99% of sample
c) None in 100% of sample
d) Frequent

Answer: d

Explanation: Frequent sample destruction occurs in Auger electron spectroscopy. It is bad for organics.

14. How is the specificity of Auger electron spectroscopy?

a) Very bad
b) Bad
c) Good
d) Very good

Answer: c

Explanation: The specificity of Auger electron spectroscopy is good. ESCA has very good specificity.

15. AES is more sensitive than XPS because of which of the following factors?

a) Binding energies of electrons
b) Kinetic energies of electrons
c) Mass of electrons
d) Mass to charge ratio of electrons

Answer: b

Explanation: AES is more sensitive than XPS because of the difference in kinetic energies of electrons. Ion etching is sometimes necessary for AES.

Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !

Continue Reading

Top 1000 Instrumentation Engineering Objective Questions
Analyzers Based on Gas Density Questions & Answers
Time Domain Analysis
Electron Spectroscopy for Chemical Analysis
Robotic Control System – Part II
Actuators Questions and Answers
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
Leave a Comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
210kSubscribersSubscribe
38kFollowersFollow

Categories

Explore More

Feedback Control Loop Questions & Answers
Measurement and Instrumentation Objective Questions – Part 1
Robotic Control System – Part I
X-Ray Fluorescence Spectrometry Questions and Answers
State Variables & Linear Discrete Time Systems
Pumps Quiz
MCQ on Measurement and Instrumentation
State Variable Analysis – Part I

Keep Learning

Mathematical Models of Physical Systems

Transfer Functions Objective Questions

Feedback Characteristics of Control Systems

Feedback and Non-feedback Systems Objective Questions

State Variable Analysis and Design

Pole Placement by State Feedback

Time Response Analysis

Time Response of Second Order Systems – IV

Nonlinear Control Systems

Stability of Nonlinear System

Liapunov’s Stability Analysis

Liapunov’s Stability Criterion – Part I

Analyzers Questions and Answers

Sodium Analyzer Questions & Answers

Analyzers Questions and Answers

Thermal Conductivity Analyzers Questions & Answers

Learn More

ESD System Insights

ESD System Insights: Signals for Emergency Valve Shutdown Explained

Download a Ladder logic program to GE PLC

Personal Protection Equipment

What is PPE? – Types – Personal Protection Equipment

DDE Protocol

What is the DDE Protocol?

Pig Signalling Switches Functional Testing

Pig Signalling Switches Functional Testing

Light ON OFF Control using PLC

Light ON OFF Control using PLC

Calculate Power in Parallel RL Circuit

Calculate Power in Parallel RL Circuit

SIS Design - Safety Instrumented System

SIS Design – Safety Instrumented System

Menu

  • About
  • Privacy Policy
  • Copyright

Quick Links

  • Learn PLC
  • Helping Hand
  • Part Time Job

YouTube Subscribe

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?