Nuklida · radioaktif
Kurium-242 (²⁴²Cm)
Kurium-242 (²⁴²Cm) adalah isotop radioaktif kurium dengan 96 proton dan 146 neutron (nomor massa 242). Waktu paruhnya 162,8 hari (± 0,2 hari), meluruh terutama lewat peluruhan alfa (α).
Data nuklida
- Unsur
- Kurium (Cm, Z = 96)
- Nomor massa (A)
- 242
- Proton (Z)
- 96
- Neutron (N)
- 146
- Massa atom
- 242.058834187 ± 0.000001224 u
- Waktu paruh
- 162,8 hari (± 0,2 hari)
- Mode peluruhan
- Peluruhan alfa (α) ( 100 %), Peluruhan beta plus ganda
- Inti anak
- Plutonium-238 (²³⁸Pu), Plutonium-242 (²⁴²Pu)
- Tahun penemuan
- 1949
- Sumber data
- IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem
Kegunaan isotop kurium
- 244Cm and 242Cm (with half-lives of 18.1 years and 163 days, respectively) are strong alpha emitters (see alpha decay). The alpha emission from these isotopes creates a considerable quantity of heat that makes them useful as alpha particle sources, as well as heat generators in RTGs (radioisotopic thermoelectric generators). During a number of space missions based in America and Europe, 244Cm was the source used for the alpha particle X-ray spectrometer that was on board vehicles such as the Mars Exploration Rover and the Rosetta/Philae,. 244Cm has a large neutron capture to neutron fission cross-section ratio and has been used in a nuclear reactor to produce higher mass radio-isotopes of curium (Fig. IUPAC.96.1),.
Isotop kurium lainnya
²³¹Cm, ²³²Cm, ²³³Cm, ²³⁴Cm, ²³⁵Cm, ²³⁶Cm, ²³⁷Cm, ²³⁸Cm, ²³⁹Cm, ²⁴⁰Cm, ²⁴¹Cm, ²⁴³Cm, ²⁴⁴Cm, ²⁴⁵Cm, ²⁴⁶Cm, ²⁴⁷Cm, ²⁴⁸Cm, ²⁴⁹Cm, ²⁵⁰Cm, ²⁵¹Cm, ²⁵²Cm