montepy.data_inputs.isotope module
- class montepy.data_inputs.isotope.Isotope(ZAID='', node=None, suppress_warning=False)
Bases:
objectA class to represent an MCNP isotope
Deprecated since version 0.4.1: This will class is deprecated, and will be renamed:
Nuclde. For more details see the Migration plan for MontePy 1.0.0.- Parameters:
ZAID (str) – the MCNP isotope identifier
suppress_warning (bool) – Whether to suppress the
FutureWarning.
- property A
The A number for this isotope.
- Returns:
the isotope’s mass.
- Return type:
int
- property Z
The Z number for this isotope.
- Returns:
the atomic number.
- Return type:
int
- property ZAID
The ZZZAAA identifier following MCNP convention
- Return type:
int
- property element
The base element for this isotope.
- Returns:
The element for this isotope.
- Return type:
- get_base_zaid()
Get the ZAID identifier of the base isotope this is an isomer of.
This is mostly helpful for working with metastable isomers.
- Returns:
the mcnp ZAID of the ground state of this isotope.
- Return type:
int
- property is_metastable
Whether or not this is a metastable isomer.
- Returns:
boolean of if this is metastable.
- Return type:
bool
- property library
The MCNP library identifier e.g. 80c
- Return type:
str
- mcnp_str()
Returns an MCNP formatted representation.
E.g., 1001.80c
- Returns:
a string that can be used in MCNP
- Return type:
str
- property meta_state
If this is a metastable isomer, which state is it?
Can return values in the range [1,4] (or None). The exact state number is decided by who made the ACE file for this, and not quantum mechanics. Convention states that the isomers should be numbered from lowest to highest energy.
- Returns:
the metastable isomeric state of this “isotope” in the range [1,4], or None if this is a ground state isomer.
- Return type:
int
- nuclide_str()