共查询到19条相似文献,搜索用时 62 毫秒
1.
惯性约束聚变靶材料掺杂技术综述 总被引:5,自引:0,他引:5
文章概要综述了惯性约束聚变掺杂靶材料的制备方法,内容包括聚苯乙烯掺卤素和过渡金属元素,玻璃与塑料掺簇粒子,以及塑料涂层掺高Z金属等。简述了掺杂材料的分析测试手段及其在ICF中的应用。 相似文献
2.
聚苯乙烯掺溴塑料靶材料的研制 总被引:4,自引:1,他引:3
介绍了部分溴阀聚苯乙烯靶材料的制备与特性。内容涉及市售聚苯乙烯的轩型凝胶渗透色谱分级,窄相对分子量分布PS与Br2间的亲电反应及其动力学特性,Br-PS粗产物的纯化,以Br-PS样品的结构与性能分析。 相似文献
3.
溶胶-凝胶法制备惯性约束聚变靶材料研究 总被引:3,自引:0,他引:3
本文主要介绍用sol-gel法制备具有纳米结构的SiO2、TiO2和ZrO2材料。这些材料的孔洞率和比表面积甚高(孔洞率为80%-99.8%,比表面为1000m^2/g),孔洞尺寸和体积密度极小(典型的孔洞尺寸为1-100nm,最低体积密度为10kg/m^3);折射率n在1.1-1.9范围内可调,并在相当大的范围具有很好的光谱选择性;材料的耐温特性良好,可耐温500℃以上。这些结构和性能特点有可能为惯性约束聚变研究扩展了靶材料选择的范围。此外,就制备过程中前驱体的选择、水解度和催化剂的影响、凝胶过程和后处理工艺对材料结构特性的影响进行了讨论。 相似文献
4.
5.
ICF分解实验中的平面调制靶和薄膜靶的研制 总被引:3,自引:1,他引:3
本工作研制了用于惯性约束聚变ICF分解实验模拟聚变靶丸表面粗糙度和驱动激光空间不均匀性对R—T不稳定性作用的平面调制靶和平面薄膜靶。以激光干涉法结合图形转移工艺获得波长20~100μm、振幅0.0~4.0μm的正弦调制图形的模板,再将调制图形转移至溴代聚苯乙烯薄膜表面,制备出ICF实验用溴代聚苯乙烯平面调制箔靶;以半导体工艺结合自截止腐蚀工艺制得厚度4μm左右的自支撑Si平面薄膜靶。Si膜的表面粗糙度为几十纳米。对所研制的两种靶型的参数进行了测量。 相似文献
6.
7.
在ICF实验中,激光光路参数的设定是关键之一。本程序是基于Windows在Cbuilder环境下用C^++编写的,模拟给出打靶后球靶表面的光强分布情况可以给实验人员在打靶前调整激光参数做参考,对ICF实验提高效率很有帮助;经过适当改进也可以方便用于其他靶型。 相似文献
8.
简要阐述了一个用旋转椭球镜和照相底片一次曝光获得激光惯性约束聚变实验中的散射光角分布信息的实验方法,介绍了其实验数据的分析处理方法并给出误差分析。 相似文献
9.
10.
11.
12.
可加工SiO2气凝胶及其惯性约束聚变靶微柱制备 总被引:1,自引:0,他引:1
以正硅酸乙酯(TEOS)为前驱体,采用酸碱两步催化法制备SiO2醇凝胶。醇凝胶分别经TEOS母液、六甲基二硅胺烷(HMDSA)处理后,采用CO2超临界干燥法制备出密度在30~100mg/cm3的SiO2气凝胶。用傅立叶变换红外光谱(FTIR)对疏水性SiO2气凝胶进行了表征,并用扫描电镜图研究了气凝胶改性前后的微观网络结构。改性后的气凝胶微观骨架变大,部分细小的网络结构消失。改性后的气凝胶在潮湿环境中具有极好的尺寸稳定性和疏水性能。用精密车床加工出了满足惯性约束聚变物理试验要求的ICF靶微柱。 相似文献
13.
14.
Stephen O. Dean 《Journal of Fusion Energy》2003,22(3):181-190
This paper summarizes recent progress in fusion Innovative Confinement Concepts (ICC) as reported at the 2004 ICC Workshop held May 25–28, 2004 in Madison, Wisconsin. This was the third in an annual series of workshops on this topic. The purpose of these workshops is to provide a forum for those who are thinking and working beyond what is considered to be the current state of understanding of fusion concepts. 相似文献
15.
Heavy-ion-driven fusion (HIF) is a scheme to achieve inertial confinement fusion (ICF). Investigation of the non-uniformity of heavy-ion beam (HIB) irradiation is one of the key issues for ICF driven by powerful heavy-ion beams. Ions in HIB impinge on the pellet surface and deposit their energy in a relatively deep and wide area. Therefore, the non-uniformity of HIB irradiation should be evaluated in the volume of the deposition area in the absorber layer. By using the OK1 code with some corrections, the non-uniformityof heavy-ion beam irradiation for the different ion beams on two kinds of targets were evaluated in 12-, 20-, 60- and 120-beam irradiation schemes. The root-mean-square (RMS) non-uniformity value becomes σRMS= 8. 39% in an aluminum mono-layer pellet structure and σRMS= 6.53% in a lead-aluminum layer target for the 12-uranium-beam system. The RMS non-uniformity for the lead-aluminum layer target was lower than that for the mono-layer target. The RMS and peak-to-valley (PTV) non-uniformities are reduced with the increase in beam number, and low at the Bragg peak layer. 相似文献
16.
对三维输运与燃耗耦合程序MCORGS进行了适应性改造,并对利弗莫尔实验室提出的激光惯性约束聚变裂变混合能源(LIFE)概念进行了分析和改进。输运计算采用MCNP程序,燃耗计算采用ORIGENS程序,增加氚控制模块和功率控制模块。建立了与LIFE等价的以贫化铀为燃料、Be为中子增殖剂的包层方案,通过数值模拟验证了MCORGS程序的可靠性。针对Be资源短缺及冷却复杂问题,设计了以贫化铀为燃料、Pb为中子增殖剂的包层方案,包层能量放大了4倍,可在55a内稳定输出2 000 MWt功率。 相似文献
17.
H atom Rydberg matter (RM) in excitation state n = 1 is concluded to be a form of metallic hydrogen [Badiei S, Holmlid L (2004) J Phys Condens Matter 16:7017]. This material
can be produced at low pressure. This condensed form of hydrogen may be very useful as a dense hydrogen inertial confinement
fusion (ICF) target, being almost metallic and ten times denser than solid (frozen) diatomic hydrogen used at present. Coulomb
explosions and plasma formation are initiated in condensed atomic hydrogen even by relatively weak nanosecond pulsed lasers.
The protons emitted with high directivity in these explosions are energetic, corresponding to T = 105 K, and they may be utilized to give strong compression of the material. The fastest protons observed at up to 1 keV indicate
a compression considerably higher than that required for “fast ignition” fusion. 相似文献
18.
Rulon Linford Riccardo Betti Jill Dahlburg James Asay Michael Campbell Phillip Colella Jeffrey Freidberg Jeremy Goodman David Hammer Joseph Hoagland Steve Jardin John Lindl Grant Logan Keith Matzen Gerald Navratil Arthur Nobile John Sethian John Sheffield Mark Tillack Jon Weisheit 《Journal of Fusion Energy》2003,22(2):93-126
This is the final report of a panel set up by the U.S. Department of Energy (DOE) Fusion Energy Sciences Advisory Committee (FESAC) in response to a charge letter from Dr. Ray Orbach (Appendix A). In that letter, Dr. Orbach asked FESAC for an assessment of the present status of inertial fusion energy (IFE) research carried out in contributing programs. These programs include the heavy ion (HI) beam, the high average power laser (HAPL), and Z-Pinch drivers and associated technologies, including fast ignition (FI). This report, presented to FESAC on March 29, 2004, and subsequently approved by them (Appendix B), presents FESAC's response to that charge. 相似文献
19.
惯性约束聚变研究进展和展望 总被引:2,自引:1,他引:2
1 前 言惯性约束聚变 (ICF)是实现可控热核聚变能源的主要途径之一 ,同时又可作国防、基础科学研究等重要应用。ICF的基本思想是 :利用激光或离子束作驱动源 ,脉冲式地提供高强度能量 ,均匀地作用于装填氘氚燃料的微型球状靶丸外壳表面形成高温高压等离子体 ,利用反冲压力 ,使靶的外壳极快向心运动 ,压缩氘氚主燃料层到每立方厘米几百克质量的极高密度 ,并使局部氘氚区域形成高温高密度热斑 ,达到点火条件。驱动脉冲宽度为纳秒级 ,在高温高密度热核燃料来不及飞散之前 ,进行充分热核燃烧 ,放出大量聚变能。为了实现聚变能源需要历… 相似文献