calc_charge_centers

static ThomasFermi.calc_charge_centers(physics, n, islands)

Calculates the center of each charge island.

This is done by summing n * x over the region defined by each island, and dividing by the sum of n over the region (similar to a center of mass calculation).

Parameters:

  • physics (PhysicsParameters) – The physical device parameters.

  • n (ndarray[float]) – A 1D array containing the particle density (in 1/nm).

  • islands (ndarray[int]) – An array with shape (num_islands, 2) giving the islands, where islands[i] is a length-2 integer array [begin_index, end_index + 1] giving the indeces of physics.x corresponding to the island.

Returns:

An array with length equal to len[islands] which gives the center of the charge distribution over each island.

Return type:

ndarray[float]