onix.utils.xs_lib

class onix.utils.xs_lib(id_number)

xs_lib objects allow users to build and store custom, small size one-group cross section libraries.

Parameters

id_number (int) – The id number associated with the xs_lib object

add_data(zamid, **kwargs)

Add cross section data for a specified nuclide to the cross section object.

Parameters

• zamid (int) – z-a-m id of the nuclide

• data (float) –

  Keywords should be cross section names. Input should be the value in barn. Possible keyword entries:

  • ngamma

  • n2n

  • n3n

  • nalpha

  • fission

  • removal

add_xs_dict(zamid, xs_dict)

Add cross section data from a cross section disctionnary for a specified nuclide to the cross section object.

Parameters

• zamid (int) – z-a-m id of the nuclide

• xs_dict (dict) –

  A dictionnary where keys are cross section names and entries are values in barn. Possible dictionnary entries:

  • (n,gamma)

  • (n,2n)

  • (n,3n)

  • (n,alpha)

  • fission

  • removal

property xs

Returns the cross section dictionnary of the cross section object. This dictionnary has nuclides’ z-a-m id as keys and cross section sub-dictionnaries as entries. Cross section sub-dictionnaries have cross sections’ names as keys and corresponding values in barn as entries.