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51.
Nuclear Fusion Induced by Coulomb-Hydrodynamic Explosion of Deuterium Clusters in Intense Laser Pulses 下载免费PDF全文
Considering the Coulomb-hydrodynamic explosion induced by the interaction of a deuterium cluster target with an ultra-intensity femtosecond laser, we analyse the mechanism of generating energetic deuterium nuclei for the fusion. We propose formulae for expansions of deuterium ion duster which are driven by Coulomb-hydrodynamic explosion. Hence the kinetic energies of deuterium nuclei, the expansion time and exploding efficiency of deuterium ion cluster have been estimated. 相似文献
52.
在传统的热化学气相沉积(CVD)的基础上,引入针尖电场,开展了电场对碳纳米管阵列准直性改善的研究。利用扫描电子显微镜(SEM)和Raman光谱两种表征手段,研究了加电场与不加电场两种情况下得到的碳纳米管(CNT)阵列的准直性,证明了电场对碳纳米管阵列准直生长的有效性。文章还对电场诱导碳纳米管阵列准直生长的机理进行了初步的探讨,认为电场使碳纳米管极化是CNT阵列准直生长的主要原因。 相似文献
53.
The conductivity of single walled nanotube films is investigated with a combination of the Maxwell-Garnett (MG) model and the Drude-Lorentzian (DL) model in the Terahertz region. A theoretical fit for Jeon‘‘s experiment is given and a decrease of the real conductivity with increasing frequency is predicted. Meanwhile, the MG and DL models are also discussed for different samples. 相似文献
54.
Monte Carlo simulation is used to study the low energy He ion channelling in a (17, 0) single-wall nanotube and its rope. The simulation shows that the channelling critical angle ψc = 48E^-1/2 (E is incident energy) for a 1.31-nm-diameter initial beam into the nanotube, while ψc = 45E^-1/2 for the 1.31-nm-diameter initial beam into its rope. 相似文献
55.
为了模拟钍基熔盐堆(TMSR)材料的中子辐照损伤,基于中国科学院上海应用物理研究所(SINAP)的4 MV静电加速器,研制了一台专用的离子束辐照装置。装置主要由束流传输线和高温、高真空靶室组成。束流传输线装有用于束流磁场扫描和束流监测的设备。装置可提供H^+,He^+,Ar^+等束流用于离子束辐照,束流最高能量4 Me V,最大流强2μA。辐照温度范围为液氮温度至950℃。辐照面积最大为30 mm×30mm。装在靶室的由旋转铝片构成的变能器对束流能量进行调制,可以在样品中得到均匀的辐照损伤。初步的实验结果表明,装置适用于高温合金及其他熔盐堆材料的辐照损伤研究。 相似文献
56.
利用同位旋相关的Boltzmann-Langevin方程研究了40Ca+58Fe和40Ca+58Ni两个反应系统在53,100,150和200MeV/u入射能量下对心碰撞的径向膨胀流.发现对于丰中子系统40Ca+58Fe的径向膨胀流系统性地小于稳定系统40Ca+58Ni的径向膨胀流.在假定轰击能量与反应体系的压缩密度呈抛物线关系时,能够解释入射能量和径向膨胀流之间呈现的直线关系.提取了出现径向膨胀流的轰击能量阈值,发现对丰中子系统40Ca+58Fe得到的能量阈值小于稳定系统40Ca+58Ni所得到的能量阈值. 相似文献
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58.
Occurrence of superdeformed (SD) shape from the relationship between the collective rotation and the pairing correlations is investigated in the relativistic mean field theory framework. It is found that pairing correlation plays an important role in the occurrence of SD shape. It is also shown that the SD band of 66^Zn is more difficult to be observed than that of 60^Zn experimentally. 相似文献
59.
本文对A M Odlyzko等人提出的SOP数a(n)证明了: (ⅰ) a(2)=1/2; (ⅱ) ■C>0,■Cn~(1/2)≤a(n)≤0.5+O(n~(-1))≤0.75。 相似文献
60.
采用角动量投影的形变壳组态方法是建立在量子力学框架上的一种微观理论.本文将此方法应用到147Pm,56Fe,56Co,56Mn等核,根据理论计算和实验结果的比较讨论了此方法的潜力. 相似文献