Zeeman Effect

The Zeeman effect is the splitting of atomic energy levels, under application of external magnetic field, which are additionally characterized by the orbital and spin angular momentum or Bohr’s Magneton.

In this set up the normal Zeeman effect is investigated which characterizes the splitting of energy levels observed by the spectral lines of corresponding electron transitions. A line triplet perpendicular to the magnetic field and a line doublet parallel to the magnetic field having very small difference in wavelengh is observed instead of a single line without magnetic field. The splitting of 546.1 nm wavelength from Mercury light source under strong magnetic field in transverse and longitudinal direction is observed through CMOS camera on computer. The Bohr’s Magneton can be calculated from the measurements in experiment.

Features:

• Heavy, rigid and stable Optical bench (made of Al extrusion)
• Saddle can hold rod from 8 to 15mm.
• Height and level adjustment screws (made of SS)
• Compact electromagnet can be used in transverse/ longitudinal mode.
• High resolution Fabri-Perot etalon to detect wavelength change of 0.002nm.
• Interference filter is 546.1nm.
• High current supply with safety sockets and dual temperature control fan.
• Clear orbital splitting is observed on CMOS camera.

Objectives:

• To observe the Zeeman splitting of the green (546.1nm) mercury line using Fabry-Perot etalon for normal transverse and longitudinal configuration.
• Determining the polarization state of the triplet components in transverse configuration.
• Determining the polarization state of the doublet components in longitudinal configuration.

Technical Data:

• Electro magnet : Ferromagnetic core, Coils 500 T, Current 5A (Max.), 4mm safety socket, U Core 150 x 130mm(LxH), 40 x 40mm, cross section, I Core L=150mm,
• Fabry Perot Etalon : Mirror optics Lamda/20, Mirror gap 3 mm, Filter 532nm, Green Interference Filter, Clear view 40mm dia, Rod 10 mm dia.
• CMOS Camera : 1.3 MP, USB Interface.
• Digital Gauss Meter : Range 2k & 20kG, Sensor In As, Resolution 1G & 10 G at 2k & 20k G, Offset By Potentiometer to set ZERO.
• Power Supply : 0-40V DC, 0-10A, voltage resolution 0.1V, display 3½ digit LED, current resolution 0.1 A, primary fuse 8 Amp.
• Optical bench : Al exclusion, L = 1.5 mtr. with Scale, Triangular shape with end stop, 4 point levelling (steel screw).
• Optics holder : Al, Dia. 130 x 3mm (Ø x T), H 230mm
• Transversal slider : 25 – 0 – 25mm, LC 0.01mm

Scope of Delivery:

• 1 Optical Bench triangular
• 2 Transverse slider
• 2 Convex Lens in Holder, FL 150 mm
• 1 Convex Len in holder, FL 50mm
• 1 Polarizer filter
• 1 Quarter wave filter
• 2 Electromagnet Coil
• 1 Power supply for electromagnet
• 1 Mercury Lamp with Power Supply
• 1 Mercury lamp holder
• 1 Fabry-Perot etalon
• 1 CMOS Camera with Software
• 1 Digital Gauss meter
• 1 Green Filter with Holder
• 1 Micrometer Eyepiece
• 5 Fixed slider