# Compton scattering multiple wavelengths?

The formula given for compton scattering shows that when x-ray of one specific wavelength hits carbon or some materials, emitted x-ray will be of one new specific wavelength.

However, according to scattered x-ray intensity (y-axis) vs wavelength (x-axis) graph, it shows that there are multiple wavelengths for each scattering angle.

So, what is the wrong part of my thoughts? How should compton scattering formula be interpreted? And how can one explain that scattered x-ray frequency can be higher than original x-ray frequency?

Note that this is not thermal motion, but is instead ground-state quantum motion. That being said, this effect is currently being used to measure temperatures in laser-shock compressed matter such as that in inertial-confinement fusion experiments, where temperatures reach well above 10$^5$ K (where the thermal broadening is measurable on top of the Pauli broadening).