arXivDaily arXiv每日学术速递 周一至周五更新
arXiv physics/0609197physics.ins-detphysics.atom-ph
收藏

原子磁力仪在磁性粒子探测中的应用

Application of atomic magnetometry in magnetic particle detection

S. Xu, M. H. Donaldson, A. Pines, S. M. Rochester, D. Budker, V. V. Yashchuk

摘要:

我们证明了检测的磁性粒子进行的水在连续流动中使用原子磁梯度仪。介绍了三种类型的磁性颗粒的研究:单个钴颗粒(直径~150 μ m,多畴)、超顺磁性磁铁矿颗粒悬浮液(直径~1 μ m)和铁磁性钴纳米颗粒(直径~10 nm,磁化强度120 kA/m)。估计检测限为20 μ m直径为一个单一的钴颗粒在水流速为30毫升/分钟,5x10^3磁铁矿颗粒在160毫升/分钟,和50 pl的特定铁磁流体在130毫升/分钟。我们的方法可能的应用进行了讨论。

英文摘要:

We demonstrate the detection of magnetic particles carried by water in a continuous flow using an atomic magnetic gradiometer. Studies on three types of magnetic particles are presented: a single cobalt particle (diameter ~150 um, multi-domain), a suspension of superparamagnetic magnetite particles (diameter \~1 um), and ferromagnetic cobalt nanoparticles (diameter ~10 nm, 120 kA/m magnetization). Estimated detection limits are 20 um diameter for a single cobalt particle at a water flow rate 30 ml/min, 5x10^3 magnetite particles at 160 ml/min, and 50 pl for the specific ferromagnetic fluid at 130 ml/min. Possible applications of our method are discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑