Zeeman effect and intensity distribution of Mercury green line
No magnetic field applied (at 546 nm)
Magnetic field applied (transverse Zeeman at 546 nm)
Before and after applying magnetic field at 436 nm
Before and after applying magnetic field at 577 nm
Features
Transverse and longitudinal Zeeman effects
Adjustable magnetic field intensity from electromagnet
Large magnet pole for uniform interference pattern
Wideband etalon allowing oberservation of Zeeman effects at multiple Hg wavelengths
Optional CCD camera with analysis software for Windows 10/11
Introduction
The LEAI-26 Zeeman Effect Apparatus with Electromagnet is a powerful experimental system designed to explore and demonstrate the Zeeman effect, a crucial phenomenon in modern physics. The Zeeman effect is instrumental in confirming the existence of atomic magnetic moments and the spatial quantization of atomic energy levels. This apparatus is ideal for studying the interaction between light and magnetic fields, which is fundamental to understanding the electron spin theory and the g-factor of atoms.
In this system, an electromagnet is used to induce a magnetic field that causes the splitting of the Mercury spectral line at 546.1 nm into π and σ lines, providing clear observation of the Zeeman effect. The system includes a direct-reading microscope for measuring the interference pattern created by the Fabry-Perot (F-P) etalon. An optional CCD camera with analytical software can be employed to capture and analyze the interference pattern to calculate the Bohr magneton. Additionally, a wideband F-P etalon allows the observation of Zeeman effects across different Mercury spectral lines (577 nm, 436 nm, 404 nm), which can be selectively observed using optional filters.
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 transverse and longitudinal Zeeman effects of Mercury at 546.1 nm
2. Understand atomic magnetic moment and spatial quantization in atomic physics
3. Observe the splitting and the polarization of a Mercury spectral line at 546.1 nm
4. Determine the quantum number, the Bohr magneton, and Lande's factor
5. Learn how to use a Fabry-Perot etalon
Specifications
| Item | Specifications |
| Electromagnet | magnetic field strength: > 1.0 T |
| > 90º rotatory with an open hole in one pole (dia: 6 mm) | |
| pole diameter: 25 mm | |
| pole spacing: 10 mm | |
Etalon | quartz |
| diameter: 40 mm | |
| spacing: 2 mm (air) | |
| finesse: ≥ 50 | |
| flatness:< λ/30 | |
| CWL: 589.3 nm | |
| resolution (λ/dλ): > 2 x 105 | |
| reflectivity: > 90% | |
| HR bandwidth: >100 nm | |
| Pencil Hg lamp | emitter diameter: 6.5 mm; power: 3 W |
| Interference filter | CWL: 546.1 nm; transmittance: > 80% |
| Polarizer | 360º rotational |
| λ/4 Plate | at 546 nm including mounting magnets |
| Eyepiece | 15 X; measuring range: 8 mm; resolution: 0.01 mm |
Parts List
| Description | Qty |
| Pencil Mercury Lamp | 1 |
| Electromagnet | 1 |
| Condensing Lens | 1 |
| F-P Etalon | 1 |
| Polarizer | 1 |
| Interference Filter (546 nm) | 1 |
| Reading Microscope | 1 |
| Imaging Lens | 1 |
| Power Supply Unit (Hg Lamp and Electromagnet) | 1 |
| Optical Rail | 1 |
| Slide | 4 |
| λ/4 Plate | 1 |
| Tesla Meter with AC Adapter | 1 |
| CCD, USB interface & software | 1 set (option 1) |
| Interference filters with mount at 577 & 435 nm | 1 set (option 2) |
Zeeman effect and intensity distribution of Mercury green line
No magnetic field applied (at 546 nm)
Magnetic field applied (transverse Zeeman at 546 nm)
Before and after applying magnetic field at 436 nm
Before and after applying magnetic field at 577 nm
