2个位势的Ablowitz-Ladik等谱方程的Complexiton解

借助双Casoratian技巧和构造双Wronski行列式元素的矩阵方法,求出2个位势的Ablowitz-Ladik等谱方程的Complexiton解和周期解,并通过将矩阵取成不同的组合类型,进而分别得到该方程具有双Casorati行列式形式的新解,即Complexiton解与类有理解的混合解、Complexiton解与Matveev解的混合解.     

Exact Solutions of Ablowitz–Ladik Hierarchy with Self-Consistent Sources Revisited and Reductions

In the paper, Ablowitz–Ladik hierarchy with new self-consistent sources is investigated. First the source in the hierarchy is described as φnφn+1, where φnis related to the Ablowitz–Ladik spectral problem, instead of the corresponding adjoint spectral problem. Then by means of the inverse scattering transform, the multi-soliton solutions for the hierarchy are obtained. Two reductions to the discrete mKdV and nonlinear Schr¨odinger hierarchies with selfconsistent sources are considered by using the uniqueness of the Jost functions, as well as their N-soliton solutions.     

改善铝酸盐蓝色荧光粉性能的研究

研究了在铝酸盐蓝色荧光粉ＢａＭｇＡｌ１０Ｏ１７：Ｅｕ中用Ｃａ代替部分Ｂａ的效果，结果表明，约４～１２ｍｏｌ％的Ｂａ和Ｃａ取代后，抑制了５００ｎｍ以上的工波绿色发射，色坐标Ｙ值减小，而发射峰强度增高，从而改善了这种蓝色荧光粉的性能。     

High Power THz Undulator Radiation from Linear Accelerator

A 30-MeV femto-second electron linac is built at the Shanghai Institute of Applied Physics, which can produce high power, coherent THz undulator radiation. We report the experimental facility and measurement of the power, frequency spectrum. First experiments show the averaged power at THz to be about 20mW.     

一个与Toda格相关的微分差分方程族及其反散射变换

By combined power evolution laws of the spectral parameter and the initial constants of integration,a new differential-difference hierarchy is presented from the Toda spectral problem.The hierarchy contains the classic Toda lattice equation,the nonisospectral Toda lattice equation and the mixed Toda lattice equation as reduced cases.The evolution of the scattering data in the inverse scattering transform is analyzed in detail and exact soliton solutions are computed through the corresponding inverse scattering transform.     

交联聚苯乙烯的太赫兹光谱特性

交联聚苯乙烯是一种热固性塑料，具有优异的介电特性和耐高压击穿能力等特性。采用基于太赫兹波空气电离相干探测法(THz-ABCD)的太赫兹时域光谱系统，测量了交联聚苯乙烯和聚苯乙烯样品在太赫兹的光谱特性，得到了其在2~13 THz频段的吸收系数、折射率等光学参数。研究结果表明:交联聚苯乙烯和聚苯乙烯的吸收谱形状相似，在6.6，9.8和12.25 THz等处存在多个吸收峰，但是交联聚苯乙烯的吸收系数在12 THz以下高于聚苯乙烯，在12 THz以上低于聚苯乙烯；交联聚苯乙烯的折射率高于聚苯乙烯，聚苯乙烯的折射率在1.58~1.59之间，交联聚苯乙烯的折射率在1.59~1.62之间。     

I/Q技术用于加速器鉴相的实验研究

I/Q解调技术在加速器领域的应用颇为常见,本文基于对模拟I/Q鉴相器的理论分析提出一套完整的误差校正方法,可以有效地克服各种误差对I/Q鉴相器性能的影响,并在此基础上完成了相关的实验工作.     

Characterizing THz Coherent Synchrotron Radiation at Femtosecond Linear Accelerator

The generation and observation of coherent THz synchrotron radiation from femtosecond electron bunches in the Shanghai Institute of Applied Physics femtosecond accelerator device is reported. We describe the experiment setup and present the first result of THz radiation properties such as power and spectrum.     

—个新的m×m矩阵Kaup-Newell谱问题及其相应的可积分解(英文)

A new m×m matrix Kaup-Newell spectral problem is constructed from a normal 2×2 matrix Kaup-Newell spectral problem,a new integrable decomposition of the Kaup-NeweU equation is presented.Through this process,we find the structure of the r-matrix is interesting.     

L-天冬酰胺及其一水合物的太赫兹光谱研究

本文利用太赫兹时域光谱技术测量了室温条件下无水L-天冬酰胺与L-天冬酰胺一水合物的光谱特征,发现二者存在显著的差异,并利用太赫兹时域光谱技术实时检测L-天冬酰胺一水合物受热脱水的动态过程.结果表明太赫兹波对晶体结构变化、含结晶水状况以及分子间弱相互作用敏感.结合差示扫描量热法与热重分析联用、傅里叶变换红外光谱、粉末X射线衍射等多种技术分别从热学性质、分子振动等方面进行了表征,进一步确认了太赫兹实验结果的可靠性.采用基于密度泛函理论(DFT)的第一性原理平面波赝势方法,结合广义梯度近似(GGA)下的PBE交换-关联泛函,对L-天冬酰胺一水合物进行模拟计算,对实验所得太赫兹光谱与分子结构以及相互作用间的关系进行了讨论分析.