DDCS: Understanding What it Measures

[TimNguyen]

Hello all,

I was doing some reading on doubly differential cross-sections and was wondering what does this actually measure, in a physical sense. The way I see it, it looks like the differentiation of the incident angle of the scattering with respect to the reflected angle? Also, there's also a second differentiation with respect to the energy. I'm assuming that is to show the energy lost when an electron is scattered? I'm not really sure what is going on at all with this concept. Any help is appreciated. Thank you.

 

[azntoon]

The doubly differential cross-section (DDCS) measures the probability of an incident particle (e.g. electron) being scattered at a given angle and energy. It is usually used for studying interactions between particles and atoms, molecules or clusters. The DDCS is expressed as a function of the scattering angle, energy and polarization of the incident particle. It is a measure of the probability per unit solid angle of the scattering of an incident particle into a given direction at a given energy. It can also be used to study the scattering of light by particles.

 

[denian]

Hello,

The doubly differential cross-section (DDCS) is a measurement used in the field of particle physics to understand the scattering of particles, specifically electrons. It is a mathematical representation of the probability of a particle being scattered at a particular angle and energy. The first differentiation with respect to the incident angle represents the probability of the particle being scattered at that specific angle, while the second differentiation with respect to energy represents the energy loss of the particle during the scattering process.

This measurement is important because it provides information about the interaction between particles and the material they are scattering off of. By studying the DDCS, scientists can gain a better understanding of the structure and properties of the material, as well as the behavior of the particles themselves.

I hope this helps to clarify the concept of DDCS for you. If you have any further questions, please don't hesitate to ask. Thank you for your interest in this topic.

Best regards,