Deuterated polymer microspheres can be used as a neutron source in conjunction with lasers because thermonuclear fusion neutrons can be produced efficiently by collisions of the resulting energetic deuterium ions. A new type of solid deuterated polymer microsphere with a carbon hydrogen–carbon deuterium (CH-CD) multilayer has been designed for preparing the target for inertial confinement fusion (ICF) experiments. To fabricate these solid CH-CD multilayer microspheres, CH beads are first fabricated by a microfluidic technique, and the CD coating layer is prepared by a plasma polymerization method. Both polystyrene (PS) and poly(α-methylstyrene) (PAMS) are used as the material sources for the CH beads. The effects of the PS and PAMS materials on the quality of the solid CH beads and the resulting CH-CD multilayer polymer microspheres are investigated. The solid PS beads have better sphericity and a smoother surface, but large vacuoles are observed in solid PS-CD multilayer microspheres owing to the presence of residual fluorobenzene in the beads and a glass transition temperature of the solid PS beads that is lower than the temperature of plasma polymerization. Therefore, solid PAMS beads are more suitable as a mandrel for fabricating solid CH-CD multilayer polymer microspheres. Solid CH-CD multilayer microspheres with specified size have been successfully prepared by controlling the droplet size and the CD deposition rate and deposition time. Compared with the design value, the diameter deviation of the inner CH beads and the thickness deviation of the CD layer can be controlled within 20 µm and 2 µm, respectively. Thus, an approach has been developed to fabricate solid CH-CD multilayer microspheres that meet the physical design requirements for ICF.

中文翻译：

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用于惯性约束融合的固体CH-CD多层微球的制备

氘化的聚合物微球可以与激光器一起用作中子源，因为热核聚变中子可以通过产生的高能氘离子的碰撞而有效地产生。设计了一种新型的具有氢-碳-氘（CH-CD）多层结构的固态氘代聚合物微球，以准备惯性约束聚变（ICF）实验的目标。为了制造这些固体CH-CD多层微球，首先通过微流技术制备CH珠，并且通过等离子体聚合法制备CD涂层。聚苯乙烯（PS）和聚（α-甲基苯乙烯）（PAMS）用作CH珠的材料来源。研究了PS和PAMS材料对固体CH珠和所得CH-CD多层聚合物微球质量的影响。固态PS珠粒具有更好的球形度和更光滑的表面，但是由于固态PS-CD多层微球中存在残留的氟苯，并且固态PS珠粒的玻璃化转变温度低于温度，因此观察到较大的液泡。等离子体聚合。因此，固体PAMS珠更适合作为制造固体CH-CD多层聚合物微球的心轴。通过控制液滴尺寸，CD沉积速率和沉积时间，已成功制备了具有特定尺寸的固体CH-CD多层微球。μ m和2 μ分别米。因此，已经开发出一种方法来制造满足ICF物理设计要求的固体CH-CD多层微球。