The generation of selenium nanoparticles in water and their fragmentation by a neodymium laser with a pulse repetition rate of 10 kHz and an average power of 20 W is experimentally investigated. The size distribution of selenium nanoparticles is determined using a measuring disk centrifuge. The particle morphology is analysed by transmission electron microscopy. It is found that laser ablation of a selenium target in water provides mainly submicron particles, which must be subjected to laser fragmentation in a solution to obtain selenium nanoparticles about 100 nm in size. These selenium nanoparticles are used as an additive to soil in which some crops are grown. The optimal selenium content in soil is determined.

实验研究了水中硒纳米颗粒的产生及其通过脉冲重复率为 10 kHz 和平均功率为 20 W 的钕激光破碎。硒纳米颗粒的尺寸分布是使用测量盘式离心机确定的。通过透射电子显微镜分析颗粒形态。发现水中硒靶的激光烧蚀主要提供亚微米颗粒，这些颗粒必须在溶液中进行激光碎裂以获得约100nm尺寸的硒纳米颗粒。这些硒纳米颗粒被用作一些作物生长的土壤的添加剂。确定了土壤中的最佳硒含量。