donnager 0.1.2

Blazingly fast astrodynamics calculations in Rust
Documentation 
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/*
Atomic physics functions
*/

use crate::constants as cst;

pub struct Element{
    pub name: &'static str,
    pub number: i32,
    pub molar_mass: f64,
    pub isotope: i32,
    pub decay_type: &'static str
}

impl Element {

    // Calculate binding energy of nucleus
    pub fn calc_binding_energy(&self) -> f64 {
        let num_protons: i32 = self.number;
        let num_neutrons: i32 = self.isotope - num_protons;
        let mass_protons: f64 = f64::from(num_protons) * cst::MASS_PROTON;
        let mass_neutrons: f64 = f64::from(num_neutrons) * cst::MASS_NEUTRON;
        let mass_defect: f64 = self.molar_mass - (mass_protons + mass_neutrons);
        let binding_energy: f64 = mass_defect * cst::SPEED_OF_LIGHT.powi(2);
        return binding_energy
    }

}

pub fn rest_mass_to_ev(
    mass: f64
) -> f64 {
    let rest_energy: f64 = mass * cst::SPEED_OF_LIGHT.powi(2);
    let rest_ev: f64 = rest_energy * cst::ELECTRON_VOLT;
    return rest_ev
}

// TODO-TD: autogen every element and isotope from a database

pub const HYDROGEN_1: Element = Element {
    name: "Hydrogen",
    number: 1,
    molar_mass: 1.0,
    isotope: 1,
    decay_type: "stable"
};

pub const DEUTRIUM: Element = Element {
    name: "Deutrium",
    number: 1,
    molar_mass: 2.014,
    isotope: 2,
    decay_type: "stable"
};

pub const OXYGEN: Element = Element {
    name: "Oxygen",
    number: 8,
    molar_mass: 16.0,
    isotope: 16,
    decay_type: "stable"
};