Abstract

A cell for studying the diffusion of therapeutic medical radionuclides into the macrolayer of the carrier sorbent was fabricated using 3D printing. The diffusion of ultramicroquantities of radium and strontium within a layer of watered hydroxyapatite was investigated. The value of the effective diffusion coefficient obtained using a one-dimensional nonstationary model was (1.0 ± 0.4) × 10^–8 cm²/s for Ra and (3.0 ± 0.3) × 10^–8 cm²/s for Sr.

中文翻译：

---

羟基磷灰石在多孔吸附剂层中锶和锶的扩散和吸附

摘要

使用3D打印制造了一个用于研究治疗性放射性核素向载体吸附剂大分子层中扩散的单元。研究了超微量的镭和锶在含水羟基磷灰石层中的扩散。使用一维非平稳模型获得的有效扩散系数的值对于Ra为（1.0±0.4）×10 ^–8 cm ² / s，对于Sr为（3.0±0.3）×10 ^–8 cm ² / s。