Inelastic neutron scattering

Inelastic neutron scattering can be used for probing

• Phonons

• Diffusive motion

• Spinwaves

• Molecular vibrations

Which spectrometer produces a 4-dimensional data set?

• Triple-axis spectrometer

• Multiplexing spectrometer

• Time-of-flight spectrometer

• Backscattering spectrometer

Organize these images and statements in the correct spectrometer category

Groups:

(a) Triple-axis spectrometer

,

(b) Time-of-flight spectrometer

• 
• Direct or indirect geometry

• 
• 
• Simple data set

• Possibility to focus on interesting points in (q,E)

• 
• Gives an overview

The scattering function for phonons is proportional to ​​ (a)   whereas for spinwaves it is proportional to ​ (b)  

Match the following

• Differential cross section

• 
• Total cross section

• 
• Circle

• 
• Neutron flux

• 
• Partial differential cross section

• 

• describes the neutron-sample interaction
• is only valid for magnetic interactions
• ensures energy conservation
• defines the neutron absorption process