Enum EnergyLaw 

pub enum EnergyLaw {
    Const(f64),
    SqrtE {
        a0: f64,
        a1: f64,
    },
    InverseLambda {
        a0: f64,
        a1: f64,
    },
    ExpMilliEv {
        kappa: f64,
    },
}

Energy-dependence law for an Ikeda–Carpenter parameter.

A small closed set so the fixed-or-fit cases share one representation: fixed ⇒ Const; fit ⇒ a parametric law whose coefficients are the fit variables.

Variants

Const(f64)

Energy-independent constant.

SqrtE

a0·√(E[eV]) + a1 — leading epithermal scaling of the fast rate α(E).

Fields

a0: f64

a1: f64

InverseLambda

Mantid IC form 1/(a0 + a1·λ), λ (Å) = LAMBDA_ANGSTROM_FACTOR/√E. Behaves as α ∝ √E at low E and saturates to 1/a0 at high E.

Fields

a0: f64

a1: f64

ExpMilliEv

exp(−E[meV]/kappa) — storage fraction R(E), → 0 in the eV regime.

Fields

kappa: f64

Implementations

impl EnergyLaw

pub fn eval(&self, energy_ev: f64) -> f64

Evaluate the law at energy_ev (eV). Non-positive energy yields the E→0 limit where well-defined (and a clamped value otherwise).

Trait Implementations

impl Clone for EnergyLaw

fn clone(&self) -> EnergyLaw

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EnergyLaw

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

Formats the value using the given formatter.

impl PartialEq for EnergyLaw

fn eq(&self, other: &EnergyLaw) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for EnergyLaw