Auger electron spectroscopy involves the irradiation of the surface to be analysed with a beam of electrons of energy in the _________ range.
1.1-2 KeV
2. 2-4 KeV
3. 4-8 KeV
4.1-8 KeV
Posted Date:-2022-04-20 07:35:35
Double-pass cylindrical mirror energy analyser has how many mirrors?
1. One
2. Two
3.Three
4.four
Posted Date:-2022-04-20 07:55:11
Electron ionization can produce which of the following?
1.ESCA electron
2.Auger electron
3. Ion
4.Photon
Posted Date:-2022-04-20 07:33:10
In Auger process, an electron drops to fill which of the following?
1.1s hole
2. 1p hole
3.2s hole
4.2p hole
Posted Date:-2022-04-20 07:35:01
532.5 eV matches which of the following specific atom type?
1.Carbon
2.Oxygen
3.Nitrogen
4.Argon
Posted Date:-2022-04-20 07:30:14
A basic X-ray source includes which of the following components?
1.Large target anode
2.Large target cathode
3.Small target anode
4.Small target cathode
Posted Date:-2022-04-20 07:38:01
AES is limited when it comes to very high resolution studies.
1. True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-04-20 07:32:25
AES is more sensitive than XPS because of which of the following factors?
1.Binding energies of electrons
2. Kinetic energies of electrons
3.Mass of electrons
4.Mass to charge ratio of electrons
Posted Date:-2022-04-20 07:37:25
Auger electron spectroscopy can be used for surface chemical analysis in a way similar to which of the following?
1.ESCA
2. SIMS
3. ISS
4.Ion spectroscopy
Posted Date:-2022-04-20 07:32:10
Both ISS and SIMS have depth profiling capability.
1.True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-04-20 08:01:45
By studying which of the following can we determine if the surface corresponds to C-O or C=O chemical form?
1.Mass of the electron
2.Energy of the carbon peak
3.Binding energy
4.Charge of electron
Posted Date:-2022-04-20 07:30:39
Charging effect can be suppressed by supplying flood of electrons having which of the following?
1. Uniform low energy
2.Uniform low mass
3.Uniform high energy
4.Uniform high mass
Posted Date:-2022-04-20 07:57:56
Electron detector has a _______ doped glass tube with a secondary semiconducting coating.
1.Quartz
2.Silica
3.Lead
4.Cesium
Posted Date:-2022-04-20 07:56:21
Electron ionisation can produce ESCA electrons.
1.True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-04-20 07:33:30
How is the specificity of Auger electron spectroscopy?
1.Very bad
2.Bad
3.Good
4.Very good
Posted Date:-2022-04-20 07:37:04
If the primary ion is elastically scattered, the kinetic energy of the reflected primary ion will depend on which of the following?
1.Charge of the primary ion
2. Charge of the surface ion
3.Mass of the surface ion
4.Number of surface ions
Posted Date:-2022-04-20 07:59:44
In Auger spectroscopy, beam currents are typically _____ in a beam of diameter 0.5mm.
1.5-10 µA
2.5-20 µA
3.5-30 µA
4.5-50 µA
Posted Date:-2022-04-20 07:35:57
In ESCA process, the photon ejects which of the following?
1.1s electron
2.1p electron
3.2s electron
4.2p electron
Posted Date:-2022-04-20 07:34:39
In ion spectroscopy, the positive ions are focussed on the sample at which of the following angles?
1.20o
2.30o
3.45o
4.90o
Posted Date:-2022-04-20 08:04:27
In Ion spectroscopy, the primary ion is usually which of the following?
1. Inert gas ion
2.Halogen ion
3.Oxygen group gas ion
4.Hydrogen
Posted Date:-2022-04-20 07:58:55
In order to obtain ISS spectra, the backscattered primary ions are sampled by which of the following?
1.Faraday cup analyser
2.Photographic analyser
3.Micro-channel analyser
4.Cylindrical mirror analyser
Posted Date:-2022-04-20 08:07:54
In spherical sector analyser, ____ is detected and plotted as a function of energy.
1. Mass
2.Charge
3.Number of electrons striking the detector
4.Mass to charge ratio of electrons
Posted Date:-2022-04-20 07:55:34
Magnetic deflection energy analysers are effective than electrostatic types.
1.True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-04-20 07:54:47
Only those electrons which are in a selected small solid angle are received in the ________ electrostatic analyser.
1.100o
2.127o
3.180o
4.263o
Posted Date:-2022-04-20 08:06:53
Qualitative chemical analysis is very often performed using which of the following?
1.ESCA
2.SIMS
3.AES
4. Ion spectroscopy
Posted Date:-2022-04-20 07:32:47
Synchroton radiation has several advantages over conventional radiation.
1.True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-04-20 07:58:14
The anode is held at __________ positive potential and the filament is held at ____________ potential.
1.High, ground
2.Ground, high
3. Low, high
4.High, low
Posted Date:-2022-04-20 07:38:30
The characterisation of auger spectroscopy can be achieved up to which of the following depths?
1.1 nm
2.2 nm
3.4 nm
4.8 nm
Posted Date:-2022-04-20 07:31:37
The fragments formed during sputtering can be either neutral atoms or ions. The ions can only be positive.
1.True
2.False
3.all of the above
4.None of the mentioned
Posted Date:-2022-04-20 08:00:34
The kinetic energy of the primary ion should be in which of the following range?
1.0.1-4 keV
2.0.2-1 keV
3.0.4-2 keV
4.0.3-5 keV
Posted Date:-2022-04-20 07:59:18
The output of the multiplier is fed to which of the following immediately?
1.Pulse amplifier discriminator
2.DAC
3.ADC
4.Multichannel analyser
Posted Date:-2022-04-20 07:56:44
Which is the most intense line in the X-ray spectrum?
1.Kα1
2. Kα2
3. Kα12
4.Kα22
Posted Date:-2022-04-20 07:39:18
Which of the following can be used as the detector in ion spectroscopy?
1. Faraday cup collector
2.Channel electron multiplier
3.Micro-channel plate
4.Flame ionization detector
Posted Date:-2022-04-20 08:07:19
Which of the following causes the phenomena of sputtering?
1.Primary ion gets embedded in the solid
2.Primary ion is elastically scattered
3. Primary ion is reflected
4.Primary ion is refracted
Posted Date:-2022-04-20 08:00:11
Which of the following denotes the sample destruction that occurs in Auger electron spectroscopy?
1.None in 95% of sample
2.None in 99% of sample
3.None in 100% of sample
4.Frequent
Posted Date:-2022-04-20 07:36:42
Which of the following is an Auger transition starting from a hole in 1s levels which would be filled up from the 2p level?
1.KLM transition
2.KLL transition
3.LMN transition
4.LLM transition
Posted Date:-2022-04-20 07:34:14
Which of the following is denotes the absolute quantitative analysis of SIMS?
1.30%
2.70%
3.50%
4.Not possible
Posted Date:-2022-04-20 08:02:10
Which of the following is one of the most commonly used anode material?
1. Carbon
2.Tungsten
3. Magnesium
4.Cesium
Posted Date:-2022-04-20 07:38:54
Which of the following is the amount of matrix effect that occurs in SIMS?
1.Very low
2.Low
3. Some
4.Severe
Posted Date:-2022-04-20 08:02:30
Which of the following is the detection limit of Auger Electron Spectroscopy?
1.0.1% monolayer
2.0.5% monolayer
3.1% monolayer
4.2% monolayer
Posted Date:-2022-04-20 07:36:20
Which of the following is the detection limit of ESCA?
1. 0.1% monolayer
2. 0.5% monolayer
3.1% monolayer
4.2% monolayer
Posted Date:-2022-04-20 07:31:01
Which of the following is the energy after collision with a surface atom for a scattering angle of 90o when Eo is the energy of the incident ion, M1 is the mass of the incident ion and M2 is the mass of the target surface?
1.Eo(M2-M1)/(M2+M1)
2.Eo(M2+M1)/(M2-M1)
3.Eo(M2×M1)/(M2+M1)
4.Eo(M2-M1)/(M2×M1)
Posted Date:-2022-04-20 08:08:27
Which of the following is the energy range of ISS?
1.1 keV
2. 2 keV
3.4 keV
4.8 keV
Posted Date:-2022-04-20 08:01:04
Which of the following is the ideal vacuum for electron spectrometers?
1.10-6 torr
2.10-7 torr
3.10-8 torr
4.10-9 torr
Posted Date:-2022-04-20 07:57:05
Which of the following is the most commonly used detector in ESCA and AES?
1.Electron multiplier
2.Dynodes
3.Photovoltaic cell
4.Photomultiplier
Posted Date:-2022-04-20 07:55:58
Which of the following is the most commonly used magnetic shielding?
1.Helmholtz coils
2.Ferro-magnetic shielding
3. Faraday shield
4.Magnetometer probe
Posted Date:-2022-04-20 07:57:30
Which of the following is the spectral range of SIMS?
1. 0-10 amu
2.0-100 amu
3.0-500 amu
4. 0-1000 amu
Posted Date:-2022-04-20 08:01:27
Which of the following is the x-y resolution of ISS?
1.1 µ
2.10 µ
3.100 µ
4. 1000 µ
Posted Date:-2022-04-20 08:02:58
Which of the following is the x-y resolution of SIMS?
1. 1 µ
2.10 µ
3. 100 µ
4.1000 µ
Posted Date:-2022-04-20 08:03:19
Which of the following must be used with the X-ray source to have high energy resolution?
1.Chopper
2.Vacuum chamber
3.Accelerator
4.Monochromator
Posted Date:-2022-04-20 07:40:03