MassAttenuationCoefficient¶

class roentgen.absorption.MassAttenuationCoefficient(material)[source]¶

Bases: object

The mass attenuation coefficient.

Parameters:	material_str (str) – A string representation of the material which includes an element symbol (e.g. Si), an element name (e.g. Silicon), or the name of a compound (e.g. cdte, mylar).

data¶

The mass attenuation data values.

Type:	`astropy.units.Quantity` array

energy¶

The energy values of the mass attenuation values.

Type:	`astropy.units.Quantity`

symbol¶

The material symbol

Type:	`str`

name¶

The material name

Type:	`str`

func¶

A function which returns the interpolated mass attenuation value at any given energy. Energies must be given by an astropy.units.Quantity. The interpolation range is 1 keV to 20 MeV. Going outside that range will result in a ValueError.

Type:	`lambda func`

Examples

>>> from roentgen.absorption.material import MassAttenuationCoefficient
>>> mass_atten = MassAttenuationCoefficient('air')