Please, help with the experimental setup

Click For Summary
SUMMARY

The discussion focuses on using a spectrometer to measure atomic spectra, specifically utilizing a discharge tube filled with gas as a light source. The setup involves two telescopes: one aimed at the gas source and the other for observation through an eyepiece. Key steps include adjusting a fixed prism to refract light into the second telescope, calibrating with known spectra, and recording the angles and intensities of spectral lines for wavelength calculations based on experimental geometry.

PREREQUISITES
  • Understanding of spectrometer components and functionality
  • Knowledge of atomic spectra and their significance
  • Familiarity with calibration techniques in optical experiments
  • Basic principles of optics, including refraction and wavelength measurement
NEXT STEPS
  • Research the operation of specific spectrometer models, such as the Ocean Optics USB2000+
  • Learn about the principles of atomic emission spectra and their applications
  • Explore calibration methods for spectrometers using known spectral lines
  • Investigate the effects of environmental factors on spectral measurements
USEFUL FOR

Students and researchers in physics or chemistry, particularly those conducting experiments in spectroscopy or optical analysis, will benefit from this discussion.

Virous
Messages
68
Reaction score
0
Hello

Can someone, please, briefly describe or give a manual on how to use the spectrometer on the photo to measure an atomic spectrum. I tried to google that already, but failed.

http://www.daviessports.co.uk/netalogue/600/A46395.jpg

Deep thanks!
 
Physics news on Phys.org
You will need a source to look at. A discharge tube, filled with a gas may do the job.
One of the two telescopes will point at your source and you look through the eye-piece of the other telescope. The prism stays on that black tray in the center and you need to adjust it so the refracted beam goes into the second telescope. At least this is how it looks to me from the picture.
 
Prism separates the wavelengths; ther may be a reticule in the observation scope which needs to be calibrated with some known spectrum; the other arm perhaps has an attacment for the gas disharge tube - otherwise you must align this with the light source, and darken the room.

The prism is fixed; use the rotary stage to center each spectral line, and note its intensity, color, etc, and record the angle.

After that you can calculate the wavelengths from the calibration plus the experimental geometry.

I remember optics labs where we had to figure out the instrument with no instructions, and had to do our own calibrations. Its good to have a partner!
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 7 ·
Replies
7
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 2 ·
Replies
2
Views
2K