Nuclide reference

Te-132 — Tellurium-132

Te-132 की half-life 3.204 d है। मुख्य decay mode: β⁻ decay → I-132 (100%)।

Identification

तत्व
Tellurium (Te)
Atomic number Z
52
Mass number A
132
State
Radioactive

Key quantities

Half-life
3.204 d
विशिष्ट गतिविधि
1.142e+16 Bq/g
Gamma constant Γ
—
परिवहन के लिए A1 / A2 (SSR-6)
0.5 TBq / 0.4 TBq
D-value (НП-067-24)
0.03 TBq

Decay modes

  • β⁻ decay → I-132 — 100 %

Main gamma lines

Energy, keVYield, %
667.714 (I-132)101.7
228.1688
772.6 (I-132)77.93
28.612 · X-ray line38.5
28.318 · X-ray line20.68
954.55 (I-132)18.11
522.65 (I-132)16.48
49.7214.96
630.19 (I-132)13.73
1,398.57 (I-132)7.223

Includes daughter nuclides in equilibrium: I-132 (yield per decay of Te-132); the emitting nuclide is in brackets. Equilibrium is reached in about 17 h. In transient equilibrium a daughter's activity exceeds the parent's, so a yield can be above 100%.

Alpha and beta particles

RadiationEnergy, keVYield, %
β⁻, E max240.14100
1,186 (I-132)19.58
2,140.7 (I-132)19.58
742.15 (I-132)13.4

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.

Tellurium-132 (Te-132) — reference data

What is in the card

This card gathers the key data of radionuclide Te-132 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 Te-132 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.