Technical data

Electron spin resonance

Article no: P2511201

Principle

With electron spin resonance (ESR) spectroscopy compounds having unpaired electrons can be studied. The physical background of ESR is similar to that of nuclear magnetic resonance (NMR), but with this technique electron spins are excited instead of spins of atomic nuclei. The g-factor of a DPPH (Diphenylpikrylhydrazyl) specimen and the halfwidth of the absorption line are determined, using the ESR apparatus.

Benefits

Easy and fast experiment setup

Tasks

Determine the g-factor (Landé-factor) of the DPPH (Diphenylpicrylhydrazyl) specimen.
Determine the FWHM (Full Width at Half Maximum) of the absorption line.

Learning objectives

Zeeman effect
Energy quantum
Quantum number
Resonance
g-factor
Landé factor

Scope of delivery

NMR module	09051-01	1
ESR extension set	09051-00	1
Digital storage oscilloscope, 20 MHz, 2 channels, 100 MS/s	EAK-P-1335	1
Screened cable, BNC, l = 1 m	07542-11	2
ESR-NMR control panel (230 V, 50/60 Hz)	09051-11	1