Nuklida · radioaktif
Terbium-161 (¹⁶¹Tb)
Terbium-161 (¹⁶¹Tb) adalah isotop radioaktif terbium dengan 65 proton dan 96 neutron (nomor massa 161). Waktu paruhnya 6,948 hari (± 0,005 hari), meluruh terutama lewat peluruhan beta minus (β⁻).
Data nuklida
- Unsur
- Terbium (Tb, Z = 65)
- Nomor massa (A)
- 161
- Proton (Z)
- 65
- Neutron (N)
- 96
- Massa atom
- 160.927576806 ± 0.000001308 u
- Waktu paruh
- 6,948 hari (± 0,005 hari)
- Mode peluruhan
- Peluruhan beta minus (β⁻) ( 100 %)
- Inti anak
- Disprosium-161 (¹⁶¹Dy)
- Tahun penemuan
- 1949
- Sumber data
- IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem
Kegunaan isotop terbium
- 149Tb (with a half-life of 4.1 h) is being used in targeted radiotherapy using alpha particles for labeling radioimmunoconjugates in cancer treatments,. 161Tb (with a half-life of 6.9 days) attached to a bioconjugate (two covalently linked molecules, one or more of which is a biomolecule), is being used in cancer therapy as a targeted radiation treatment of cancer cells,. 161Tb is being used for imaging as it allows for on-line monitoring of its distribution using gamma cameras. 149Tb is produced by the reaction 142Nd(12C,5n) 149Dy, which is followed by a subsequent positron decay reaction 149Dy→ 149Tb+β +. It can also be produced by the reaction 141Pr(12C,4n) 149Tb; beam geometry is important for satisfactory yield of 149Tb (Fig. IUPAC.65.1).
Isotop terbium lainnya
¹³⁵Tb, ¹³⁶Tb, ¹³⁷Tb, ¹³⁸Tb, ¹³⁹Tb, ¹⁴⁰Tb, ¹⁴¹Tb, ¹⁴²Tb, ¹⁴³Tb, ¹⁴⁴Tb, ¹⁴⁵Tb, ¹⁴⁶Tb, ¹⁴⁷Tb, ¹⁴⁸Tb, ¹⁴⁹Tb, ¹⁵⁰Tb, ¹⁵¹Tb, ¹⁵²Tb, ¹⁵³Tb, ¹⁵⁴Tb, ¹⁵⁵Tb, ¹⁵⁶Tb, ¹⁵⁷Tb, ¹⁵⁸Tb, ¹⁵⁹Tb, ¹⁶⁰Tb, ¹⁶²Tb, ¹⁶³Tb, ¹⁶⁴Tb, ¹⁶⁵Tb, ¹⁶⁶Tb, ¹⁶⁷Tb, ¹⁶⁸Tb, ¹⁶⁹Tb, ¹⁷⁰Tb, ¹⁷¹Tb, ¹⁷²Tb, ¹⁷³Tb, ¹⁷⁴Tb