Struct CrystalTarget 

pub struct CrystalTarget {
    pub lattice: Lattice,
    pub orientation: Orientation,
    pub p_max_m: Option<f64>,
    pub q_max_m: Option<f64>,
    pub search_length_m: Option<f64>,
    pub thermal: Option<Thermal>,
}

A crystal for Bca::with_crystal: the lattice, the orientation of the target in the lab frame and the three search parameters.

Fields

lattice: Lattice

The lattice (cubic or hexagonal).

orientation: Orientation

Wafer cut and angles. Only its lab-to-crystal rotation is used.

p_max_m: Option<f64>

Largest impact parameter of a partner, m. Default None: the nearest-neighbour distance of the lattice. Steering by the atoms of a channel wall needs partners out to about that distance; smaller radii (DISPLATH’s examples use a/3 and the amorphous constant-path radius (π N^(2/3))^(-1/2), a/2/π^0.5 for silicon) leave the channeled fraction too small. See the module docs, “Choice of the search parameters”.

q_max_m: Option<f64>

Largest path distance between simultaneous partners, m. Default None: DEFAULT_Q_MAX_FRACTION of the nearest-neighbour distance.

search_length_m: Option<f64>

Length of one search segment, m. Default None: the lattice constant. Affects speed only (a segment with no partner is followed by another), never the result.

thermal: Option<Thermal>

Thermal vibration of the lattice atoms. Default None: a static, perfect lattice (the 20b model, unchanged bit for bit).

Implementations

impl CrystalTarget

pub fn new(lattice: Lattice, orientation: Orientation) -> Self

A static crystal with the default search parameters.

pub fn check_material(&self, material: &Material) -> Result<(), String>

Whether material can fill a crystal region of this lattice: it must contain every element of the lattice and its atom density must agree with the lattice’s to 5 %. The same rule Bca::with_crystal applies to each region, available before an engine exists (input checking).

pub fn with_thermal(self, thermal: Thermal) -> Self

The same crystal with thermal vibration thermal.

Trait Implementations

impl Clone for CrystalTarget

fn clone(&self) -> CrystalTarget

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CrystalTarget

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

Formats the value using the given formatter.