Basic Researches on Plasma Physics and Particle Acceleration-Radiation Source under the Ultra High Electric Meld.

超高电场下等离子体物理与粒子加速辐射源基础研究。

基本信息

批准号：
14208047
负责人：
NISHIDA Yasushi
金额：
$ 26.37万
依托单位：
Utsunomiya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14208047/
关键词：
Ti-sapphire laser VpxB accelerator in plasma Laser with thin foil interaction IH type linear accelerator Capillary plasma for laser guiding Tera-hertz radiation source Sterilization of water with discharge YBCO superconductor イオン源 IH型加速器

项目摘要

The present project concerns the investigation of nonlinear physics, specifically the acceleration of high energy particles and the terahertz rang of radiation under ultrahigh electric field produced by ultra-short pulse, terawatt range laser interacting with plasma. In the way of investigation, we found new phenomena which were unexpected when we started the project, and those phenomena were also investigated in parallel with the main project. Typical results follow ;1.In the interaction of Ti-sapphire terawatt range laser with weakly magnetized plasma, radiation phenomena hi several 10 GHz range are found as well as terahertz range, and their radiation mechanisms are clarified.2.By using computer simulation techniques, the proton acceleration mechanism in the interaction between the laser and thin foil are investigated to clarify the mechanisms of proton beam production and energy exchange from laser to proton beam.3.The laser grading in the capillary plasma produced by discharge is … More successfully realized to clarify the guiding mechanisms. The plasma channeling of laser beam is one of the key method of producing the plasma based high energy particle accelerators, such as VpxB acceleration found in our laboratory and other acceleration methods.4.For building the high efficient compact proton accelerator, a compact proton beam injector is required. In order for satisfying this request, we built IH(Interdigital H-mode) linear proton accelerator which has the maximum energy up to 1 MeV. The maximum energy, however, could not reach the target. Further commissioning and the experimental works are required. This IH method has much higher efficiency than the conventional accelerator for accelerating ions.5.New application methods of plasma were found unexpectedly in the way of investigations. New hydrogen detachment method from hydrocarbons, such as methane or ethylene, was found to have quite high efficiency. Carbons in this method make nano-tubes at the same time while detachment is going on. In the YBCO superconductor formation, the commissioning method is clarified. New method of sterilization of water is found by using discharges in the water under atmospheric pressure. Less

本项目涉及非线性物理的研究，特别是超短脉冲、太瓦级激光与等离子体相互作用产生的超高电场下的高能粒子加速和太赫兹范围辐射。这些现象是我们在项目开始时未曾预料到的，这些现象与主要项目同时进行了研究。典型结果如下：1.在钛蓝宝石太瓦范围激光器与弱磁化等离子体的相互作用中，辐射现象。发现了几个10GHz范围以及太赫兹范围，并阐明了它们的辐射机制。2.利用计算机模拟技术，研究了激光与薄箔相互作用中的质子加速机制，阐明了质子束的机理3.成功实现了放电产生的毛细管等离子体中的激光分级，阐明了激光束的等离子体通道是产生等离子体的关键方法之一。高能粒子加速器，如我们实验室的VpxB加速器和其他加速方法。4.为了建造高效紧凑型质子加速器，需要一个紧凑型质子束注入器。为了满足这个要求，我们建造了IH（Interdigital H）。 -模式）线性质子加速器，其最大能量可达1 MeV，但仍无法达到目标，需要进一步的调试和实验工作。 5.在研究过程中意外地发现了等离子体的新应用方法从碳氢化合物（例如甲烷或乙烯）中分离氢的新方法，发现该方法中的碳具有相当高的效率。在 YBCO 超导体形成过程中，通过在大气压下在水中使用放电来对水进行消毒的新方法得到了阐明。较少的

项目成果

期刊论文数量（30）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Noborn Yugami et al.: "Experimental Observation of Radiation from Cerenkov Wakes in a Magnetized Plasma"Phys. Rev. Letts.. 89. 065003-1-065003-4 (2002)

Noborn Yugami 等人：“磁化等离子体中切伦科夫唤醒辐射的实验观察”Phys。

DOI：
发表时间：
期刊：
影响因子：
0
作者：
通讯作者：

Parametric optimization of a narrow band 13.5nm emission from a Li-based liquid jet target using dual nano-second laser pulses

使用双纳秒激光脉冲对锂基液体射流目标的窄带 13.5 nm 发射进行参数优化

DOI：
发表时间：
2005
期刊：
Applied Physics B (Rapid Communication) (accepted)
影响因子：
0
作者：
C.Rajiyaguru;T.Higashiguchi et al.
通讯作者：
T.Higashiguchi et al.

Radiation from high-intensity ultrashort-laser-pulse and gas-jet magnetized plasma interaction

高强度超短激光脉冲和气体喷射磁化等离子体相互作用的辐射

DOI：
发表时间：
2003
期刊：
Phy. Rev. E 68
影响因子：
0
作者：
Sunao Katsuki.Keiichi Tanaka;Taisuke Fudamoto.Takao Namihira.Hidenori.Akiyama;Hansjoachim Bluhm;Akimitsu HATTA;D. Dorranian
通讯作者：
D. Dorranian

Md.Kamal-Al-Hassan et al.: "Observation of ion wave streamers and low frequency sheath instability by the resonant absorption due to nonlinear interaction of microwave-plasma"Phys.Plasmas. 11. 836 (2004)

Md.Kamal-Al-Hassan 等人：“通过微波-等离子体非线性相互作用的共振吸收来观察离子波流光和低频鞘层不稳定性”Phys.Plasmas。