(cone)¶
The cone radiation model is based on the cone approximation, which makes the assumption that all radiation is emitted exactly along the velocity vector of the particle. This assumption can be very useful for studying the radiation from highly relativistic particles.
Summary of options¶
Option | Description |
@RadiationModel(cone) emission |
Type of radiation emission to model. |
@RadiationModel(cone) n |
(Bremsstrahlung emission only) List of plasma species densities. |
@RadiationModel(cone) projection |
Which projection method to use for the cone model. |
@RadiationModel(cone) Z |
(Bremsstrahlung emission only) List of plasma species atomic numbers. |
@RadiationModel(cone) Z0 |
(Bremsstrahlung emission only) List of plasma species net charges. |
Example configuration¶
The following example configures a cone model for bremsstrahlung in a deuterium-tritium-tungsten plasma:
@RadiationModel ourModel (cone) {
emission = bremsstrahlung;
Z = 1, 1, 74;
Z0 = 1, 1, 72;
n = 5e19;
}
All options¶
-
emission
¶
Default value: None Allowed values: bremsstrahlung
,bremsstrahlung_screened
,synchrotron
orunit
Specifies the type of radiation emission to model. The four available types of radiation are
bremsstrahlung
,bremsstrahlung_screened
,synchrotron
andunit
. The first two model bremsstrahlung, the latter taking the effect of screening of the nuclei into account. The third model synchrotron radiation, whileunit
is a type of radiation that is one everywhere. Note that the radiation is assumed to be emitted exactly along the velocity vector of the particle so thatunit
is very different from the :ref:module-rm-isotropic` radiation model. Theunit
emission type rather has more similarities with thebremsstrahlung
emission type.
-
n
¶
Default value: None Allowed values: A list of real values. Specifies the density to use for each plasma ion species when calculating the emitted electron-ion bremsstrahlung.
-
projection
¶
Default value: reverse
Allowed values: reverse
(ororiginal
)The cone model relies on a projection of either the guiding-center cone onto the detector plane, or the detector surface onto the guiding-center velocity orthogonal plane. The
original
projection does the former, while thereverse
projection does the latter.Note that the
original
model at the time of writing contains a bug and should be avoided.
-
Z
¶
Default value: None Allowed values: A list of real values. Specifies the effective plasma charge to use for each plasma ion species when calculating the emitted electron-ion bremsstrahlung.
-
Z0
¶
Default value: None Allowed values: A list of real values. Specifies the plasma net charge to use for each plasma ion species when calculating the emitted electron-ion bremsstrahlung.