Nuclide reference

Bi-213 — Bismuth-213

Bi-213 की half-life 45.59 min है। मुख्य decay mode: β⁻ decay → Po-213 (97.8%)।

Identification

तत्व
Bismuth (Bi)
Atomic number Z
83
Mass number A
213
State
Radioactive

Key quantities

Half-life
45.59 min
विशिष्ट गतिविधि
7.164e+17 Bq/g
Gamma constant Γ
—
D-value (НП-067-24)
—

Decay modes

  • β⁻ decay → Po-213 — 97.8 %
  • α decay → Tl-209 — 2.2 %

Main gamma lines

Energy, keVYield, %
440.4525.94
1,567.09 (Tl-209)2.307
465.13 (Tl-209)2.24
117.211 (Tl-209)1.949
79.291 · X-ray line1.836
76.864 · X-ray line1.103
292.80.429
807.360.292
1,100.130.259
323.810.1647

Includes daughter nuclides in equilibrium: Po-213, Tl-209 (yield per decay of Bi-213); the emitting nuclide is in brackets. Equilibrium is reached in about 16 min.

Alpha and beta particles

RadiationEnergy, keVYield, %
α5,8691.935
5,5490.1547
8,375.9 (Po-213)97.8
β⁻, E max1,42365.8
982.5630.74
322.840.5861
1,827.6 (Tl-209)2.284

For β⁻ the endpoint (maximum) energy of the spectrum is given. ENDF/B-VIII.0.

Related calculators

Reference data vs computed valuesHalf-life, gamma lines and D-value are reference data (ENDF/B-VIII.0, НП-067-24).Gamma constant Γ 1 m पर H*(10) है, ICRP-107 spectra (NIST µ_en/ρ, ICRP-74 Table A.21) से गणना की गई, equilibrium में short-lived progeny सहित (जैसे Cs-137/Ba-137m, Ra-226 series); specific activity molar mass M ≈ mass number A का उपयोग करती है।K-series X-ray energies are from NIST SRD 128 (Deslattes et al., 2003): in ENDF/B-VIII.0 they are given to 1 % and shifted by up to 0.7 keV for heavy elements. L-series lines and all yields are ENDF/B-VIII.0.

Bismuth-213 (Bi-213) — reference data

What is in the card

This card gathers the key data of radionuclide Bi-213 in one place: half-life, decay modes, main gamma lines, alpha and beta particle energies, gamma constant, specific activity and the D-value for source categorization. Decay and emission data are from ENDF/B-VIII.0; the D-value follows NP-067-24; the gamma constant is the ambient dose equivalent H*(10) at 1 m, computed from ICRP-107 spectra.

How to use the data

Half-life and specific activity let you recalculate the activity of a Bi-213 source to the delivery or disposal date — use the decay calculator. Gamma lines with yields identify the nuclide from a spectrum and pick the line for gamma spectrometry; the gamma constant Γ gives the dose rate at a distance, while the D-value and A1/A2 set the source category and the package type for transport.