作者机构：
[彭延峰; 郭燕春; 彭志华; 宁艳桃] School of Mathematics and Physics, University of South China, Hengyang 421001, China;[彭景翠] School of Physics and Microelectronics Science, Hunan University, Changsha 410082, China
通讯机构：
School of Mathematics and Physics, University of South China, China
摘要：
本文研究了一类带有阻尼项的二阶半线性中立型微分方程(r(t)φ(x(t))|(x(t)+p(t)x(σ(t)))’|α-1(x(t)+p(t)x(σ((t)))’)’+φ(x(t),x′(t))+q0(t)|x(T0(t))|α-1x(T0(t))+sum from i=1 to n(qi(t)|x(Ti(t))|βi-1x(Ti(t))=0)的解的性质,其中n是一个偶数,利用一些新的技巧,我们获得了方程解的振动的一些充分条件,并且给出例子阐述我们所得的结论.
作者机构：
[杜丹] Department of Mathematics and Physics, University of South China, Hengyang, China;[曹锦佳; 王振华; 龚学余; 扬文超; 郑平卫] Department of Nuclear Science and Technology, University of South China, Hengyang, China
通讯机构：
Department of Mathematics and Physics, University of South China, China
作者机构：
[Ning, Yan-Tao; Peng, Zhi-Hua; Guo, Yan-Chun; Gong, Xue-Yu; Peng, Yan-Feng] Univ S China, Sch Math & Phys, Hengyang 421001, Peoples R China.
通讯机构：
[Peng, Zhi-Hua] U;Univ S China, Sch Math & Phys, Hengyang 421001, Peoples R China.
关键词：
carbon nanotubes;hydrogen plasma;static magnetic field;microwave absorption
摘要：
We theoretically investigate the microwave absorption properties of hydrogen plasma in iron-catalyzed high-pressure disproportionation-grown carbon nanotubes under an external static magnetic field in the frequency range 0.3 GHz to 30 GHz, using the Maxwell equations in conjunction with a general expression for the effective complex permittivity of magnetized plasma known as the Appleton-Hartree formula. The effects of the external static magnetic field intensity and the incident microwave propagation direction on the microwave absorption of hydrogen plasma in CNTs are studied in detail. The numerical results indicate that the microwave absorption properties of hydrogen plasma in iron-catalyzed high-pressure disproportionation-grown carbon nanotubes can be obviously improved when the exter- nal static magnetic field is applied to the material. It is found that the specified frequency microwave can be strongly absorbed by the hydrogen plasma in iron-catalyzed high-pressure disproportionation-grown carbon nanotubes over a wide range of incidence angles by adjusting the external magnetic field intensity and the parameters of the hydrogen plasma.
作者机构：
[张楚汉; 郭长青] State Key Laboratory of Hydroscience and Hydraulic Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China;[郭长青] School of Mathematics and Physics, University of South China, Hengyang 421001, China
通讯机构：
State Key Laboratory of Hydroscience and Hydraulic Engineering, Department of Hydraulic Engineering, Tsinghua University, China
作者机构：
[熊平; 张静] School of Medicine, University of South China, Hunan Hengyang 421001, China;[郭萍] School of Mathematics and Physics, University of South China, Hunan Hengyang 42100, China
通讯机构：
[Xiong, P.] S;School of Medicine, University of South China, China
作者机构：
[谭琼华; 刘伟俊; 王华国] School of Mathematical Science and Computing Technology, Central South Univ, Changsha, Hunan 410075, China;[谭琼华] School of Mathematics and Physics, Univ of South China, Hengyang, Hunan 421001, China
通讯机构：
School of Mathematical Science and Computing Technology, Central South Univ, China
作者机构：
[钱盛友; 丁亚军; 胡继文] College of Physics and Information Science, Hunan Normal University, Changsha 410081, China;[胡继文] College of Mathematics and Physics, University of South China, Hengyang 421001, China
通讯机构：
College of Physics and Information Science, Hunan Normal University, China
