Schematic of experimental setup
1. Magnet
2. Mercury lamp
3. Condensing lens
4. Filter
5. Polarizer
6. F-P etalon
7. Imaging lens
8. Microscope
Fringes after applying magnetic field
Features
Permanent magnet for high intensity and stable magnetic field
Variable magnetic field intensity through spacing adjustment of poles
High accuracy Teslameter included
Optional CCD and software for Windows 10/11
Introduction
This LEAI-20 experimental system of Zeeman effect with permanent magnet consists of a main unit (including Teslameter, light source power supply, etc.), a permanent magnet, a pencil Mercury lamp, focusing/imaging lenses, an interference optical filter, a F-P etalon, a polarizer, a direct reading microscope, a CCD camera (optional), a USB image acquisition box (optional), and analysis software (optional). It is an ideal experimental instrument for advanced physics laboratories.
The instruction manual contains comprehensive materials including experimental configurations, principles and step-by-step instructions. Please click Experiment Theory and Contents to find more information about this apparatus.
Using this instrument, the following experiments can be conducted:
1. Observe Zeeman effect, and understand atomic magnetic moment and spatial quantization
2. Observe the splitting and polarization of a Mercury atomic spectral line at 546.1 nm
3. Calculate the Bohr magneton based on Zeeman splitting amount
4. Learn how to adjust a Fabry-Perot etalon and apply a CCD device in spectroscopy
Specifications
| Item | Specifications |
| Permanent magnet | intensity: 1360 mT; pole spacing: > 7 mm (adjustable) |
| Etalon | dia: 40 mm; L (air): 2 mm; passband:>100 nm; R= 95%; flatness < λ/30 |
| Teslameter | range: 0-1999 mT; resolution: 1 mT |
| Pencil mercury lamp | emitter diameter: 7 mm; power: 3 W |
| Interference optical filter | CWL: 546.1 nm; half passband: 8 nm; aperture: 19 mm |
| Direct reading microscope | magnification: 20 X; range: 8 mm; resolution: 0.01 mm |
| Lenses | collimating: dia 34 mm; imaging: dia 30 mm, f=157 mm |
Parts List
| Description | Qty |
| Main Unit | 1 |
| Pencil Mercury Lamp | 1 |
| Milli-Teslameter Probe | 1 |
| Mechanical Rail | 1 |
| Carrier Slide | 3 |
| Collimating Lens | 1 |
| Interference Filter | 1 |
| F-P Etalon | 1 |
| Polarizer | 1 |
| Imaging Lens | 1 |
| Direct Reading Microscope | 1 |
| Power Cord | 1 |
| CCD, USB Interface & Software | 1 set (optional) |
Schematic of experimental setup
1. Magnet
2. Mercury lamp
3. Condensing lens
4. Filter
5. Polarizer
6. F-P etalon
7. Imaging lens
8. Microscope
Fringes after applying magnetic field
