(angdist)¶

The angular distribution radiation model takes the full angular distribution of radiation into account. In contrast to the cone model—which assumes that all radiation is emitted exactly along the particle velocity vector—this model allows for arbitrary shapes of the angular distribution of radiation.

Summary of options¶

The following options are available in the angdist radiation model.

Option	Description
`@RadiationModel(angdist) emission`	Type of radiation emission to model.
`@RadiationModel(angdist) nsamples`	Number of points in each dimension of the detector surface.
`@RadiationModel(angdist) qrule2d`	Quadrature rule to use for integrating over the detector surface.

Example configuration¶

The following example configures a synchrotron radiation model with the detector surface discretized using a total of 16 points:

@RadiationModel ourModel (angdist) {
    emission = synchrotron;
    nsamples = 4;
}

All options¶

emission¶

Default value:	None
Allowed values:	`bremsstrahlung` or `synchrotron`

Specifies the type of radiation emission to model. Currently, the two available options are bremsstrahlung and synchrotron. The appropriate formulas to use are chosen automatically, depending on whether spectral dependence is considered, and if guiding-center drifts are included or not.

nsamples¶

Default value:	1
Allowed values:	Any positive integer.

Number of points in each dimension to discretize the detector surface with. The total number of points on the detector surface is therefore nsamples^2.

qagslimit¶

Default value:	100
Allowed values:	Any positive integer

Number of points in QAGS (quadrature) workspace.

qagstol¶

Default value:	`1e-3`
Allowed values:	Any positive real number

Relative tolerance for the QAGS integration.

qrule2d¶

Default value:	`simpson`
Allowed values:	`simpson`

Specifies the quadrature rule to use for integrating over the detector surface. Currently, only Simpson’s rule has been implemented, with the exception of the special case nsamples = 1, in which case the function is merely evaluated in the detector center-point.