| 摘要 |
<p>The invention concerns the confinement of caesium and/or rubidium, in particular ?135Cs and 137¿Cs, in an apatite matrix of formula: M¿t? Cax Lny (PO4)6-u (SiO4)u X wherein: M represents the Cs and/or the Rb; Ln represents at least a trivalent cation; X represents at least an anion selected among 2F?-, S2-, 2 Cl-, 2Br-, 2I-, 2OH- and O2-¿; and t, x, y and u are such that: 0 < t ≤ 2.5; 2 ≤ x ≤ 8; 1 ≤ y ≤ 7; 0 ∫ u < 6; x + y + t = 10; and the total number of positive charges brought by the cations M, Ca and Ln is equal to (20 + u).</p> |
