[question] How do I determine the sputtering and reflection yield from "output, incident, stopped = compound_bca_list_1D_py" code output in test_rustbca.py?

[HexSygon]

I believe I understand the inputs and outputs but not how to calculate sputter and reflection yields from the output.

Also, what is the compound reflection code used for/is this how you determine reflection coefficients for ions on compound targets?

I want to find the sputtering and reflection coefficients of D and C ions on a half W - half C target at various energies.

[drobnyjt]

@HexSygon the way to do it is to count the number of sputtered or reflected atoms and then divide by the number of computational ions / number of samples. In the examples folder, test_morse.py includes the way I usually do this:

...

if np.size(reflected) > 0:
  num_reflected = np.shape(reflected)[0]
  energy_reflected = np.sum(reflected[:, 2])
else:
  num_reflected = 0
  energy_reflected = 0.

return num_reflected/num_samples, energy_reflected/energy/num_samples

In this code snippet, the number of reflected atoms is found using np.shape as the number of rows in the reflected output file. Same procedure for the sputtered atoms - count the number of rows and divide by the number of computational ions.

[HexSygon]

Thanks Jon,

I'll give this a go and let you know if I come across any issues.

Best,
Alec

[drobnyjt]

@HexSygon You're welcome - I just realized I only responded to half of your comment; sorry about that.

Yes, the compound version is for homogeneous targets composed of more than one element. So for example H reflecting from CW.