Electron Spin Resonance on DPPH

In experiment C3.4.4.1, electron spin resonance is demonstrated on diphenyl picrylhydrazyl (DPPH). DPPH is a radical in which a free electron occurs on a nitrogen atom. In the experiment, the resonance frequencies can be predefined continuously between 13 and 130 MHz The aim of the assessment is to determine the g factor.

Components of experiment:

1	514 55	ESR basic unit
1	514 571	ESR supply unit
1	555 604	Pair of Helmholtz coils
1	575 214	Oscilloscope 30 MHz, two-channel, analogous
2	501 02	BNC cable, 1 m
3	300 11	Saddle base
1	501 23	Connecting lead, 32 A, 25 cm, black
1	501 25	Connecting lead, 32 A, 50 cm, red
1	501 26	Connecting lead, 32 A, 50 cm, blue