pub fn activity(decay_constant: f64, number_of_nuclei: f64) -> Option<f64>Expand description
Computes activity from a decay constant and number of nuclei.
Formula: A = lambda * N.
Activity is returned in becquerels when decay_constant is expressed per second.
ยงExamples
use use_nuclear::activity;
assert_eq!(activity(2.0, 10.0), Some(20.0));Examples found in repository?
examples/basic_usage.rs (line 16)
8fn main() -> Result<(), &'static str> {
9 let decay_law = DecayLaw::from_half_life(10.0).ok_or("expected valid half-life")?;
10 let remaining = decay_law
11 .remaining_quantity(100.0, 10.0)
12 .ok_or("expected valid remaining quantity")?;
13 let helium = NuclideNumbers::new(4, 2).ok_or("expected valid nuclide numbers")?;
14
15 assert!((remaining - 50.0).abs() < 1.0e-12);
16 assert_eq!(activity(2.0, 10.0), Some(20.0));
17 assert_eq!(helium.proton_count(), 2);
18 assert_eq!(helium.neutron_count(), 2);
19 assert_eq!(
20 binding_energy_mev_from_mass_defect_u(1.0),
21 Some(ATOMIC_MASS_UNIT_MEV_C2),
22 );
23
24 Ok(())
25}