COMPTON EFFECT

COMPTON EFFECT

The compton effect states x-rays scattered by loosely bound electrons of target element have reduced energy and frequency. This phenomenon describes scattering between radiation and matter and confirms the particle nature of light.

EXPERIMENTAL ARRANGEMENT

The main apparatus used in experiment consists of
X-RAYS TUBE
GRAPHITE TARGET
AND
DETECTOR 'D'

image

WORKING

A beam of x-rays having wavelength ^lemda falls on graphite target 'T'. The intensity of scattered x-rays is measured as a function of wavelenth by detector 'D' at various scattering angles 0(Theta) .

EXPERIMENTAL RESULT

The spectrum of experimental results is shown in diagram. It shows scattered x-rays beam has less penetration than incident beam.
The incident x-rays beam  has intensity peak at a single wavelength but scattered beam has intensity peaks at two wavelengths.
One intensity peak has same wavelength ^(lemda) as incident beam but second intensity peak is at wavelength ^(lemda) larger by amount dalta lemda(^) called Compton shift.
The Compton shift in wavelength varies with scattering angle 0 (Theta).