Struct Region 

pub struct Region {
    pub open_counts: Vec<f64>,
    pub sample_counts: Vec<f64>,
    pub open_live: Option<Vec<f64>>,
    pub sample_live: Option<Vec<f64>>,
    pub background: [Value; 5],
    pub pixels: f64,
    pub gamma_transmission: Value,
    pub capture_gammas: Value,
    pub in_scatter: Value,
    pub timing_offset_us: Value,
    pub material: Option<Material>,
}

The counts of a set of pixels in both runs, its background and the material the beam crosses there.

Fields

open_counts: Vec<f64>

Raw counts of the open-beam run, one per bin.

sample_counts: Vec<f64>

Raw counts of the sample run, one per bin.

open_live: Option<Vec<f64>>

The fraction of the open-beam run’s counts arriving in each bin that the detector records, in (0, 1]; None records every one.

sample_live: Option<Vec<f64>>

The fraction of the sample run’s counts arriving in each bin that the detector records, in (0, 1]; None records every one.

background: [Value; 5]

[b0, b1, b2, d, f] of the background b(E) = b0 + b1/√E + b2·√E + d·exp(−f/√E): b0 and d dimensionless, b1 in √eV, b2 in 1/√eV and f in √eV, f 0 or more and the others any real number.

pixels: f64

The region’s area in pixels, finite and positive.

gamma_transmission: Value

The fraction of the time background that reaches the region’s pixels in the sample run through what is in front of them, within 0–1.

capture_gammas: Value

ε, the share of the neutrons captured in the region’s sample whose gammas its pixels record, 0 or more: the sample run gains c_q·a·ε·φ·(1 − T)·Σ_m n_m σ_γm/D, the captures at the neutrons’ first collision, σ_γm each isotope’s capture cross section broadened like its total one, at the neutrons’ flight times.

in_scatter: Value

Ω, the share of the neutrons scattered once in the region’s sample and leaving through its back face that its pixels record, 0 or more: the sample run gains c_q·a·Ω·φ·Σ_m n_m σ_sm·G_m, σ_sm each isotope’s elastic cross section broadened like its total one and G_m its share leaving through the back face (forward_yield), at the mean areal density and the neutrons’ flight times.

timing_offset_us: Value

δt in µs, any real number: the region’s pixels record every count δt later than t0’s clock, a neutron of flight time u at t0 + δt + u and the time background δt late.

material: Option<Material>

The material the beam crosses in the region; None for nothing, which transmits every neutron.

Trait Implementations

impl Clone for Region

fn clone(&self) -> Region

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Region

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

Formats the value using the given formatter.