Struct PrecursorInfo 

pub struct PrecursorInfo {
    pub target_mz: Option<f64>,
    pub selected_mz: Option<f64>,
    pub isolation_width: Option<f64>,
    pub charge: Option<i32>,
    pub intensity: Option<f64>,
    pub collision_energy: Option<f64>,
    pub ce_is_nce: bool,
    pub precursor_native_id: Option<String>,
    pub activation: Option<Activation>,
    pub analyzer: Option<Analyzer>,
    pub ccs: Option<f64>,
}

Precursor metadata for an MS2+ spectrum.

Fields

target_mz: Option<f64>

Isolation-window center m/z (target).

selected_mz: Option<f64>

Monoisotopic-resolved precursor m/z (selected ion).

isolation_width: Option<f64>

Total isolation width in m/z. The mzML writer splits this into symmetric lower/upper offsets around target_mz.

charge: Option<i32>

intensity: Option<f64>

Precursor intensity (when known).

collision_energy: Option<f64>

Collision energy. Interpretation depends on ce_is_nce.

ce_is_nce: bool

true if collision_energy is normalized (NCE %); false for eV.

precursor_native_id: Option<String>

Native ID of the precursor scan when known. Vendors should populate this with the same string they will use as the native_id for that MS1 spectrum, so mzML spectrumRef lookups round-trip cleanly.

activation: Option<Activation>

analyzer: Option<Analyzer>

Analyzer that recorded the precursor scan; needed by mzML to disambiguate CID vs beam-type CID on FTMS instruments.

ccs: Option<f64>

Collision cross-sectional area of the selected ion, in square angstroms. Derived from ion-mobility measurements (Bruker 1/K0, Waters drift time, etc); vendors that only expose raw mobility should convert before populating this rather than leaving it for downstream consumers to guess a calibration.

Trait Implementations

impl Clone for PrecursorInfo

fn clone(&self) -> PrecursorInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PrecursorInfo

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

Formats the value using the given formatter.

impl Default for PrecursorInfo

fn default() -> PrecursorInfo

Returns the “default value” for a type.