Annihilation

Structure used to define parameters for production of multigroup annihilation cross-sections.

Mandatory field(s)

• N/A

Optional field(s) - with default values

• interaction_types::Dict{Tuple{DataType,DataType},Vector{String}} = Dict((Positron,Positron) => ["A"],(Positron,Photon) => ["P","P_inel","P_brems"],(Photon,Photon) => ["P_pp"]) : Dictionary of the interaction processes types, of the form (incident particle,outgoing particle) => associated list of interaction type, which values correspond:
  • (Positron,Positron) => ["A"] : absorption of the incoming positron.
  • (Positron,Photon) => ["P"] : production of the two photons following annihilation.
  • (Positron,Photon) => ["P_inel"] : production of annihilation photons from inelastic collisional positrons absorption following scattering under the cutoff energy.
  • (Positron,Photon) => ["P_brems"] : production of annihilation photons from Bremsstrahlung positrons absorption following scattering under the cutoff energy.
  • (Photon,Photon) => ["P_pp"] : production of annihilation photons from absorption of positrons following their production under the cutoff energy.

set_interaction_types(this::Annihilation,interaction_types::Dict{Tuple{DataType,DataType},Vector{String}})

To define the interaction types for annihilation processes.

Input Argument(s)

• this::Annihilation : annihilation structure.
• interaction_types::Dict{Tuple{DataType,DataType},Vector{String}} : Dictionary of the interaction processes types, of the form (incident particle,outgoing particle) => associated list of interaction type, which can be:
  • (Positron,Positron) => ["A"] : absorption of the incoming positron.
  • (Positron,Photon) => ["P"] : production of the two photons following annihilation.
  • (Positron,Photon) => ["P_inel"] : production of annihilation photons from inelastic collisional positrons absorption following scattering under the cutoff energy.
  • (Positron,Photon) => ["P_brems"] : production of annihilation photons from Bremsstrahlung positrons absorption following scattering under the cutoff energy.
  • (Photon,Photon) => ["P_pp"] : production of annihilation photons from absorption of positrons following their production under the cutoff energy.

Output Argument(s)

N/A

Examples

julia> annihilation = Annihilation()
julia> annihilation.set_interaction_types( Dict((Positron,Positron) => ["A"]) ) # Annihilation is set to be only absorption of positrons without any production of photons