Lecture 7
Sponsored Links
This presentation is the property of its rightful owner.
1 / 20

Lecture 7 PowerPoint PPT Presentation


  • 112 Views
  • Uploaded on
  • Presentation posted in: General

Lecture 7. Light sources, filters, and monochromators Harris Ch.20 . Monochromator (filter, wavelength selector). Light Source. Detector. Sample. Spectrometer. Data Processing. Black body radiation. A tungsten lamp. 3000 K. UV sources. Deuterium Lamp.

Download Presentation

Lecture 7

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


Lecture 7

Light sources, filters, and

monochromators

Harris Ch.20


Monochromator

(filter,

wavelength selector)

Light Source

Detector

Sample

Spectrometer

Data Processing


Black body radiation


A tungsten lamp

3000 K


UV sources

Deuterium Lamp

Deuterium: higher intensity

Even higher intensity: Xe arc


Monochromator

(filter,

wavelength selector)

Light Source

Detector

Sample

Spectrometer

Data Processing


Filters


thickness

Refractive index


A Bunsen monochromator


Refractive index of NaCl

350 nm 1.58

460 nm 1.56

680 nm 1.54

1250 nm 1.53

7.30mm 1.51

10.6mm 1.49

12.0mm 1.48

13.1mm 1.47

14.2mm 1.46

15.1mm 1.45

16.0mm 1.44

Detector plate


Littrow

Cornu

Quarz prisms


Czerney-Turner monochromator


Dispersion:

Resolution (resolving power):

Number of grooves

Diffraction order


  • Login