低强度空心玻璃微球充氘氚气体工艺研究

 采用分步法对低强度空心玻璃微球充氘氚气体。为了充气,建立一套高压系统,在15MPa下漏率为3.7×10^-4 PaL/s。用铀床和LaNi₅床组合起来,作为充气的高压气源。室温和250℃时,玻璃微球的最大承受压力为1.0MPa,内外压之比约0.51。在250℃时,对微球进行充气,充进微球内的氘氚气体量为0.51～0.54Mpa,满足了物理实验的要求。     

神光Ⅱ激光直接驱动聚变靶空心玻璃微球的研制

为了用液滴法制备神光Ⅱ直接驱动内爆出中子实验要求的薄壁空心玻璃微球,研究了原料配方优化、液滴的初始速率、大小及玻璃形成物含量的控制、多区高温液滴炉内轴向温度分布等技术环节,优化了制备工艺,制备出直径分别为100,200和520μm等3种规格薄壁空心玻璃微球,其几何参数、耐压能力、保气性能等各项指标满足了打靶实验要求.     

Hollow glass microsphere production for laser direct-driven fusion targets on Shen Guang II

A liquid-droplet technique was investigated to fabricate thin wall hollow glass microspheres (HGM) used in laser fusion experiments on Shen Guang II. Glass-forming compositions, operating conditions of the droplet generator and the vertical multiple-zone furnace were optimized. Thin wall HGM with diameters of about 100, 200, and 520 μm were fabricated, whose failure pressures, gas retention properties for D2, and chemical durability were all characterized. The results of the fusion experiments show that the HGM targets are quite satisfactory and the highest neutron yields obtained are 4x 109.     

金属镱高压吸氘性能研究

大部分稀土金属与氢反应 ,都能很容易地生成三氢化物。但镱和铕却是例外 ,镱在氘压力小于 1 .0 3× 1 0 5Ｐａ时只生成二氘化物。文献报道金属镱在氢压力约为 2 .0ＭＰａ时生成ＹｂＨ2 .58,2 0 0～30 0℃等温线平台区从约ＹｂＨ2 扩展到接近ＹｂＨ2 .5,表明有两种不同的氢化物物相存在。基于ｖａｎ’ｔＨｏｆｆ计算得到ＹｂＨ2 .5(至二氢化物 )离解热约为 1 3.8ｋＪ/ｍｏｌＨ2 。对于在压力大于 0 .1ＭＰａ条件下获得的高含氢量氢化镱 ,Ｈａｒｄｃａｓｔｌｅ报道有一个ａ为 5 .1 92 的ｆｃｃ相与低氢含量的氢化物相共存[1 ] ,两个物相的存…