Review of the current status of fast ignition research atthe IAPCM

来源 :High Power Laser Science and Engineering | 被引量 : 0次 | 上传用户:identitymatrix
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
We review the present status and future prospects of fast ignition(FI) research of the theoretical group at the IAPCM(Institute of Applied Physics and Computational Mathematics, Beijing) as a part of the inertial confinement fusion project. Since the approval of the FI project at the IAPCM, we have devoted our efforts to improving the integrated codes for FI and designing advanced targets together with the experimental group. Recent FI experiments [K. U. Akli et al., Phys. Rev. E 86, 065402(2012)] showed that the petawatt laser beam energy was not efficiently converted into the compressed core because of the beam divergence of relativistic electron beams. The coupling efficiency can be improved in three ways:(1) using a cone–wire-in-shell advanced target to enhance the transport efficiency,(2) using external magnetic fields to collimate fast electrons, and(3) reducing the prepulse level of the petawatt laser beam. The integrated codes for FI, named ICFI, including a radiation hydrodynamic code, a particle-in-cell(PIC) simulation code,and a hybrid fluid–PIC code, have been developed to design this advanced target at the IAPCM. The Shenguang-II upgraded laser facility has been constructed for FI research; it consists of eight beams(in total 24 kJ/3ω, 3 ns) for implosion compression, and a heating laser beam(0.5–1 kJ, 3–5 ps) for generating the relativistic electron beam. A fully integrated FI experiment is scheduled for the 2014 project. We review the present status and future prospects of fast ignition (FI) research of the theoretical group at the IAPCM (Institute of Applied Physics and Computational Mathematics, Beijing) as a part of the inertial confinement fusion project. Since the approval of the FI project at the IAPCM, we have devoted our efforts to improve the integrated codes for FI and designing advanced targets together with the experimental group. Recent FI experiments [KU Akli et al., Phys. Rev. E 86, 065402 (2012)] showed that the petawatt laser beam energy was not efficiently converted into the compressed core because of the beam divergence of relativistic electron beams. The coupling efficiency can be improved in three ways: (1) using a cone-wire-in-shell advanced target to enhance the transport efficiency, (2) using external magnetic fields to collimate fast electrons, and (3) reducing the prepulse level of the petawatt laser beam. The integrated codes for FI, named ICFI, including a radiation hydrody namic code, a particle-in-cell (PIC) simulation code, and a hybrid fluid-PIC code, have been developed to design this advanced target at the IAPCM. The Shenguang-II upgraded laser facility has been constructed for FI research; it consists of eight beams (in total 24 kJ / 3ω, 3 ns) for implosion compression, and a heating laser beam (0.5-1 kJ, 3-5 ps) for generating the relativistic electron beam. A fully integrated FI experiment is scheduled for the 2014 project.
其他文献
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊
保安行业是社会安全防范体系中的重要组成部分,是公安机关的重要辅助力量.保安服务的一切工作都是公安基础工作的重要内容,保安与公安之间,虽然性质有区别,但他们是密不可分
培养学生熟练自主地运用语言,是英语学习的极其重要的目标,许多专家学者都认为培养学生的语言表达能力和感知能力,应从小学做起,身为英语教师应抓住这样的黄金时期,训练学生
近年来,《ERP沙盘》课程由于其实用性强,被广泛运用到中职的教学当中。但随着教学改革的不断推进,不难发现,《ERP沙盘》课程在中职会计专业的教学中存在较为显著的问题。从企
经济社会不断发展促使人们的生活水平在不断提高,人们对健康有了更为深刻的认识,相应的对健康的追求也越来越热烈。早操是我国教育体系活动的一个重要特点,同时也是对学生的
随着我国新课改的不断实施,学校内部的教育内容和教育方法均发生了改变,以满足社会人才需求。体育教学是我国德、智、体、美、劳教育中的“体”教育的重要课程,在课程改革中
随着教育事业的不断发展,高校的德育工作在教学的理念上有所落后,而高校的德育工作想要创新理念,那么就需要能够准确的确定德育工作内容;创新工作方法,创造学生的学习环境;对
目的:探讨孤立型纤维性肿瘤的CT及病理学特点,提高对该疾病的诊断水平。方法:结合文献回顾性分析3例经手术病理证实的孤立型纤维性肿瘤的临床、CT及病理学资料。结果:孤立型
19世纪下半叶随着美国经济的腾飞,一批强取豪夺、被称为“强盗大王”的新兴企业家出现在美国舞台。人们对其敛财行为有所非议,但他们对财富的一通看法无疑在美国引发了一场价值
人口老龄化问题已经成为发达国家和发展中国家共同面对的挑战.2015年以后我国将进入人口老龄化迅速发展时期,2020年后,我国将进入加速和重度老龄化发展阶段,我国人口老龄化的
期刊