Photoelectron spectroscopy
Download
1 / 11

Photoelectron Spectroscopy - PowerPoint PPT Presentation


  • 97 Views
  • Uploaded on

Photoelectron Spectroscopy. Lecture 7 – instrumental details Electron detectors Instrumental examples. Electron Detectors. Channel Electron Multiplier. Microchannel Plate. CCD detectors can also be used, typically with a phosphor screen to convert electrons to photons.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Photoelectron Spectroscopy' - elwyn


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Photoelectron spectroscopy
Photoelectron Spectroscopy

  • Lecture 7 – instrumental details

    • Electron detectors

    • Instrumental examples


Electron detectors
Electron Detectors

Channel Electron Multiplier

Microchannel Plate

CCD detectors can also be used, typically with a

phosphor screen to convert electrons to photons



Plus voltage

Minus voltage

Electron Kinetic

Energy Analyzer

Electron

Counter

Computer

Control

Gas-Phase Photoelectron Instrument

+

Sample

Chamber

Photon

Source

Photon Induces the

Photoelectric Effect.

Electrons are separated

according to

kinetic energy

Output is plot of

Ionization Energy

vs. Counts


Surface Photoelectron Instrument

Sample Prep

and Storage

Fast

Entry

Main

Analysis



Mass-Selected Gas-Phase Photoelectron Instrument

MCP

(mass

detector)

Time-of-flight mass spectrometer

magnet

2.5 m

5x10-11 Torr

Time-of-flight

magnetic botter

photoelectron

spectrometer

4.0 m

Electrospray

Ionization source

Z-stack MCP

(photoelectron

detector)


ad