Struct Material 

pub struct Material {
    pub isotopes: Vec<(ResonanceData, Value)>,
    pub temperature_k: Value,
    pub thickness_variance: Value,
    pub library: EndfLibrary,
    pub covariances: Vec<(usize, ResonanceCovariance)>,
    pub lattice: Option<PhononSpectrum>,
}

A material’s isotopes and temperature.

Fields

isotopes: Vec<(ResonanceData, Value)>

Each isotope with its areal density in atoms/barn, known, fitted or measured, at least 0.

temperature_k: Value

The temperature in K, within 1–5000 K: the thermodynamic one with a Self::lattice, an effective one for the free gas.

thickness_variance: Value

v, the relative variance of the areal density over the region’s pixels, weighted by the beam that reaches them, 0 or more: 0 for a uniform sample. The region transmits (1 + v·D)^(−1/v), the mean for a Gamma-distributed areal density, D the optical depth at the mean density (uneven_transmission).

library: EndfLibrary

The library the isotopes’ resonance data were read from. The fit leaves out the sample run’s bins that overlap the span between the mean arrival times, t0 + L·TOF_FACTOR/√E + 3/α + R/β, of the two ends of each window EndfLibrary::excluded_windows_ev gives for an isotope not known to be absent, at the fitted t0, flight path L and pulse.

covariances: Vec<(usize, ResonanceCovariance)>

The covariance of the resonance parameters of the isotopes listed, each with its index in isotopes, which CountsFit::covariance carries; an isotope not listed has its resonance parameters taken as exact.

lattice: Option<PhononSpectrum>

The phonon density of states the material’s nuclei vibrate with, which broadens its cross sections by the harmonic lattice (broaden_in_lattice); None broadens them by the free gas.

Trait Implementations

impl Clone for Material

fn clone(&self) -> Material

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Material

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.