Nuclide reference

Rh-102 — Rhodium-102

Rh-102 की half-life 207.3 d है। मुख्य decay mode: β⁺ decay / electron capture → Ru-102 (78%)।

Identification

तत्व
Rhodium (Rh)
Atomic number Z
45
Mass number A
102
State
Radioactive

Key quantities

Half-life
207.3 d
विशिष्ट गतिविधि
2.285e+14 Bq/g
Gamma constant Γ
—
परिवहन के लिए A1 / A2 (SSR-6)
0.5 TBq / 0.5 TBq
D-value (НП-067-24)
0.03 TBq

Decay modes

  • β⁺ decay / electron capture → Ru-102 — 78 %
  • β⁻ decay → Pd-102 — 22 %

Main gamma lines

Energy, keVYield, %
475.0645.93
510.999 · annihilation 511 keV29.93
19.28 · X-ray line23.11
19.151 · X-ray line12.18
628.054.493
468.582.895
1,103.162.895
556.61.971
680.660.5791
1,158.10.5791

Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.

Alpha and beta particles

RadiationEnergy, keVYield, %
β⁻, E max1,15020.02
593.41.98
β⁺, E max1,30110.98
825.933.964
357.330.01528

For β⁻ and 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.

Rhodium-102 (Rh-102) — reference data

What is in the card

This card gathers the key data of radionuclide Rh-102 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 Rh-102 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.