|Message: Re: momentum direction changes during hIoni process||Not Logged In (login)|
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User sauvestre wrote:
>> During hIoni process, the momentum direction of the particle of concern >> is seen to be changed. Where can i find explanations and/or equations of >> motion involved that govern such a variation of the momentum direction?
in PhysicsReferenceManual http://geant4.web.cern.ch/geant4/UserDocumentation/UsersGuides/PhysicsReferenceManual/html/node52.html
it is said : After the successful sampling of the energy, the direction of the scattered electron is generated with respect to the direction of the incident particle. The azimuthal angle is generated isotropically. The polar angle is calculated from energy-momentum conservation. This information is used to calculate the energy and momentum of both scattered particles and to transform them into the global coordinate system.
In addition, multiple scattering is applied at each step.
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