febid.monte_carlo.etrajmap3d.ETrajMap3d

class ETrajMap3d

Bases: MC_Sim_Base

Implements energy deposition and surface secondary electron flux calculation.

Create an empty ETrajMap3d instance

Methods

extract_se_heat	Calculate energy loss by scattered secondary electrons per cell.
follow_segment	Calculate total energy deposited by primary electrons per cell.
generate_se	Estimate surface secondary electron flux.
joule_heating	Get total energy loss from primary and secondary electrons peel
map_follow	Get surface secondary electron flux and volumetric heat source distribution
prep_se_emission	Subdivide trajectory segments and energy losses
setParametrs	Initialise the instance and set all the necessary parameters
traverse_cells	AABB Ray-Voxel traversal algorithm.

Attributes

NA
elementary_charge
shape
shape_abs

extract_se_heat()

Calculate energy loss by scattered secondary electrons per cell.

Returns:

follow_segment(points, dEs)

Calculate total energy deposited by primary electrons per cell.

Parameters:

• points – array of (z, y, x) points representing a trajectory from MC simulation

• dEs – list of energies losses between consecutive points. dEs[0] corresponds to a loss between p[0] and p[1]

Returns:

generate_se()

Estimate surface secondary electron flux.

Returns:

joule_heating()

Get total energy loss from primary and secondary electrons peel

map_follow(passes, heating=False)

Get surface secondary electron flux and volumetric heat source distribution

from primary electron trajectories.

Parameters:

• passes – a collection of trajectories

• heating – True will calculate collective heat effect from PEs and SEs

Returns:

prep_se_emission(points, dEs, ends)

Subdivide trajectory segments and energy losses

Parameters:

• points – segment start- and end-points

• dEs – energy loss

• ends – trajectory end positions, check comments

Returns:

setParametrs(structure, params, segment_min_length=0.3)

Initialise the instance and set all the necessary parameters

Parameters:

• structure – solid structure representation

• params – contains all input parameters for the simulation

• segment_min_length – segment subdivision length

traverse_cells(p0, pn, direction, t, step_t)

AABB Ray-Voxel traversal algorithm. Gets coordinates, where ray crosses voxel walls

Parameters:

• p0 – ray origin

• pn – ray endpoint

• direction – direction of the ray

• t – first t-value

• step_t – step of the t-value

Returns: