Principle:
The "Zeeman effect" is the splitting of the spectral lines of atoms within a magnetic field. The simplest is the splitting up of one spectral line into three components called "normal Zeeman effect". Usually the phenomenon is more complex and the central line splits into many more components. This is the "anomalous Zeeman effect". Both effects can be studied using a cadmium lamp as a specimen. The cadmium lamp is submitted to different magnetic flux densities and the splitting of the red cadmium line (normal Zeeman effect) and that of a green cadmium line(anomalous Zeeman effect) is investigated using a Fabry-Perot interferometer. The evaluation of the results leads to a fairly precise value for Bohr's magneton.

Tasks:
1. Using the Fabry-Perot interferometer and a self made telescope the splitting up of the central lines
into different lines is measured in wave numbers as a function of the magnetic flux density.

2. From the results of point 1. a value for Bohr's magneton is evaluated.

3. The light emitted within the direction of the magnetic field is qualitatively investigated.

What you need:

Fabry-Perot interferometer 09050.02 1
Cadmium lamp for Zeeman effect 09050.01 1
Electromagnet without pole shoes 06480.01 1
Pole pieces, drilled, conical, 1 pair 06480.03 1
Rotating table for heavy loads 02077.00 1
Power supply for spectral lamps 13662.97 1
Variable transformer 25 V~/20 V- , 12 A 13531.90 1
Electrolyte capacitor, 22000 μF 06211.00 1
Digital multimeter 2010 07128.00 1
Optical profile bench, l = 1000 mm 08282.00 1
Base for optical profile bench, adjustable 08284.00 2
Slide mount for optical profile bench, h = 30 mm 08286.01 5
Slide mount for optical profile bench, h = 80 mm 08286.02 2
Lens holder 08012.00 4
Lens, mounted, f = +50 mm 08020.01 2
Lens, mounted, f = +300 mm 08023.01 1
Iris diaphragm 08045.00 1
Polarization filter on stem 08610.00 1
Polarization specimen, mica 08664.00 1
Connecting cable, 4 mm plug, 32 A, red, l = 25 cm 07360.01 1
Connecting cable, 4 mm plug, 32 A, blue, l = 25 cm 07360.04 1
Connecting cable, 4 mm plug, 32 A, red, l = 50 cm 07361.01 1
Connecting cable, 4 mm plug, 32 A, blue, l = 50 cm 07361.04 1
Connecting cable, 4 mm plug, 32 A, red, l = 75 cm 07362.01 1
Connecting cable, 4 mm plug, 32 A, red, l = 100 cm 07363.01 1
Connecting cable, 4 mm plug, 32 A, blue, l = 100 cm 07363.04 1
CCD-camera for PC-use, USB* 88037.00 1
PC with USB interface, Windows 98SE/Windows Me/
Windows 2000/Windows XP