[source]
Defines the initial particle source conditions for the simulation. Currently, only a single monoenergetic, pulse, point, beam source of a single particle type is allowed.
| Field |
Type |
Description |
particle |
str |
Particle species to emit (e.g., a, d, t) |
space |
string+ |
The first entry after space is the category which can be followed by numeric specifics |
time |
string+ |
The first entry after time is the category which can be followed by numeric specifics |
energy |
string+ |
The first entry after energy is the category which can be followed by numeric specifics |
strength |
float |
Number of particles emitted (or energy-weighted source strength) |
direction |
string+ |
The first entry after direction is the category which can be followed by numeric specifics |
| Space category |
Type |
Description |
point |
3 floats |
Cartesian coordinates of the point source in cm |
| Time category |
Type |
Description |
point |
float |
Emission time in shakes |
uniform |
float float |
Uniform emission over the time contained by the start and end time |
| Energy category |
Type |
Description |
point |
float |
Initial particle energy (keV depending on code units) |
| Direction category |
Type |
Description |
isotropic |
N/A |
No subsequent tokens |
beam |
3 floats |
An x,y,z unit vector for the direction (normalized internally) |
Example
[source]
particle a
space point 0.0 0.0 0.0
time point 0.0
energy point 3500.0
strength 1e18
direction beam 1.0 0.0 0.0