Isotop utama saking samarium (62Sm)
| Isotop
|
Paluruhan
|
|
|
kalimpahan
|
paruh-idup (t1/2)
|
mode
|
produk
|
| 144Sm
|
3,08%
|
tegteg
|
| 145Sm
|
sintetis
|
340 hri
|
ε
|
145Pm
|
| 146Sm
|
sintetis
|
6,8×107 thn
|
α
|
142Nd
|
| 147Sm
|
15,00%
|
1,06×1011 thn
|
α
|
143Nd
|
| 148Sm
|
11,25%
|
7×1015 thn
|
α
|
144Nd
|
| 149Sm
|
13,82%
|
tegteg
|
| 150Sm
|
7,37%
|
tegteg
|
| 151Sm
|
sintetis
|
88,8 thn
|
β−
|
151Eu
|
| 152Sm
|
26,74%
|
tegteg
|
| 153Sm
|
sintetis
|
46,284 jam
|
β−
|
153Eu
|
| 154Sm
|
22,74%
|
tegteg
| |
| Bobot atom standar Ar°(Sm) | 7002150360000000000♠150.36(2)[1] |
|---|
|
Rupa alami samarium (62Sm) madaging saking lima isotop sané tegteg, 144Sm, 149Sm, 150Sm, 152Sm and 154Sm, miwah kalih radioisotop sané maumur sanget lantang, 147Sm (paruh urip: 1.066×1011 y) miwah 148Sm (6.3×1015 y), sareng 152Sm manados sané pinih malimpah (26.75% kelimpahan alami). 146Sm (9.20×107 y)[2] taler prasida maurip sué, sakéwanten nénten prasida maurip sué mangda prasida maurip ring akéhnyané sané signifikan saking pawentukan Tata Surya ring Gumi, yadiastun kantun maguna ring pananggalan radiométrik ring Tata Surya pinaka radionuklida punah.[3] Puniki pinaka nuklida sane maurip pinih sue sane durung kajantenang dados primordial. Instabilitasnyane santukan madue 84 neutron (kalih langkungan saking 82, sane marupa angka ajaib sané manut sareng konfigurasi neutron sane tegteg), lan mawinan punika prasida ngamedalang partikel alpha (sané madué 2 neutron) anggen ngawentuk neodymium-822.
- ↑ Méija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
- ↑ Pikobet nganggit: Tanda
<ref> tidak sah;
tidak ditemukan teks untuk ref bernama Chiera2024
- ↑ Samir Maji; et al. (2006). "Separation of samarium and neodymium: a prerequisite for getting signals from nuclear synthesis". Analyst. 131 (12): 1332–1334. Bibcode:2006Ana...131.1332M. doi:10.1039/b608157f. PMID 17124541.
