排序方式: 共有39条查询结果,搜索用时 46 毫秒
1.
Pulsed microwave-driven argon plasma jet with distinctive plume patterns resonantly excited by surface plasmon polaritons 下载免费PDF全文
Atmospheric lower-power pulsed microwave argon cold plasma jets are obtained by using coaxial transmission line resonators in ambient air.The plasma jet plumes are generated at the end of a metal wire placed in the middle of the dielectric tubes.The electromagnetic model analyses and simulation results suggest that the discharges are excited resonantly by the enhanced electric field of surface plasmon polaritons.Moreover,for conquering the defect of atmospheric argon filamentation discharges excited by 2.45-GHz of continued microwave,the distinctive patterns of the plasma jet plumes can be maintained by applying different gas flow rates of argon gas,frequencies of pulsed modulator,duty cycles of pulsed microwave,peak values of input microwave power,and even by using different materials of dielectric tubes.In addition,the emission spectrum,the plume temperature,and other plasma parameters are measured,which shows that the proposed pulsed microwave plasma jets can be adjusted for plasma biomedical applications. 相似文献
2.
在入射光子能量为79.6 eV~139 eV范围内,利用DS3C模型计算了不同碰撞几何条件下He光双电离的三重微分截面(TDCS),并与3C模型计算结果、CCC理论结果和实验数据做了比较.表明,末态波函数动量相关效应成功地修正了3C结果,特别当入射光子能量接近阈值时,明显改善了与实验结果的符合程度. 相似文献
3.
4.
金属有机化学蒸汽淀积和分子束外延技术在半导体生长方面已取得巨大的成功,使电子技术领域发生了深刻的变化,像双异质激光器、量子阱激光器、隧道二极管等所谓“能带工程”已得到广泛的研究与应用。 相似文献
5.
6.
利用3C、DS3C和S3C模型分别计算了共面非对称几何条件下快电子碰撞碳原子K-壳层电离的三重微分截面(TDCS),将S3C模型计算结果与其它理论结果和实验数据进行了比较.表明:内壳层电离的TDCS呈现出一强的recoil峰,对于某些参量,recoil峰甚至高于binary峰.这一点与外壳层电离过程不相同.S3C模型能够较好地描述这样的电离过程.? 相似文献
7.
8.
Multi-band microwave metamaterial absorber based on coplanar Jerusalem crossesMulti-band microwave metamaterial absorber based on coplanar Jerusalem crosses 下载免费PDF全文
The influence of the gap on the absorption performance of the conventional split ring resonator (SRR) absorber is investigated at microwave frequencies. Our simulated results reveal that the geometry of the square SRR can be equivalent to a Jerusalem cross (JC) resonator and its corresponding metamaterial absorber (MA) is changed to a JC absorber. The JC MA exhibits an experimental absorption peak of 99.1% at 8.72 GHz, which shows an excellent agreement with our simulated results. By simply assembling several JCs with slightly different geometric parameters next to each other into a unit cell, a perfect multi-band absorption can be effectively obtained. The experimental results show that the MA has four distinct and strong absorption peaks at 8.32 GHz, 9.8 GHz, 11.52 GHz and 13.24 GHz. Finally, the multi-reflection interference theory is introduced to interpret the absorption mechanism. 相似文献
9.
磁驱动滑动弧放电装置的磁路设计 总被引:1,自引:0,他引:1
大气压磁驱动滑动弧放电能产生具有约束性能较好的非平衡等离子体,在微电子工业,环境工程等领域有广泛的应用前景,利用磁导法对此装置进行了磁路设计,得出了磁感应强度,磁体厚度,气隙长度三者之间的解析表达式,所得出的结果与有限元分析结果进行了比较,偏差约为3.1%,但磁导法简捷方便,通用性强,经济性好,是一种更为可靠而实用的工程算法。 相似文献
10.
The effects of the ambient pressure Pambient on the bubble characteristics of pulsed discharge in water are investigated.The simulation results show that,when Pambient increases from 1 atm to 100 atm,the bubble radius R decreases from 4cm to 7mm,and its pulsation period decreases from 8ms to 0.2ms.The results also show that the peak pressure of the first shock wave is independent of Pambient,but the peak pressure of the second shock wave caused by the bubble re-expansion decreases when Pambient increases.On the other hand,the larger the ambient pressure,the larger the peak pressure of the plasma in the bubble,while the plasma temperature is independent of Pambient. 相似文献