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     CONFINED SUBBAND——CONTINUUM TRANSITIONS IN STRAINED LAYER In_(0.15)Ga_(0.85)As-GaAs MULTIPLE QUANTUM WELLS
     In_(0.15)Ga_(0.85)As—GaAs应力层多量子阱中束缚子带—连续带跃迁
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     ln Ge_xSi_(1-x)/Si strained layer superlattice,the optical transitions between subbands and continuous bands are observed.
     在 Ge_xSi_1-x/Si 应变层超晶格中,观测到子带和连续带间的光跃迁。
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     The intersubband excitontransitions 11H, 11L,22H and the transitions between the confined subbands and continuum areobserved.
     在1.240—1.550eV光子能量范围,除11H、11L和22H激子跃迁以及GaAs的基本带间跃迁外,还观察到束缚子带到连续带的跃迁。
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     According on the continuous flourescence spetrum existed in the 0. 79 ̄0. 96μm wavelength regions, it is possible that Nd:YEAG may be used as a tuning crustal.
     Nd:YEAG晶体的荧光谱不是Nd:YAG和Er:YAG荧光谱简单叠加,根据0.79~0.96μm范围内存在荧光连续带,Nd:YEAG晶体有可能用作调频激光晶体。
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     We successfully isolated the single chromosome with a satellite of Chinese fir, and amplified the chromosome by using DOP-PCR with a fragment from 100bp to 700bp.
     利用玻璃针法成功分离杉木染色体组具随体的单染色体,用DOP-PCR法对此染色体进行了扩增,扩增片断的大小为100-700bp的连续带
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     a. zone, E.
     C,E.
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     Spread Type Continuous Annealing Furance for Copper Strips
     展开式铜连续退火炉
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     Development of the Ultra-thin Continuous Clad Strip
     超薄连续复合的研制
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     head continuous with body;
     头连续;
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     wilcoxi Zone, N.
     urilcaxi,N.
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They may have reached the orchard through a large and continuous area of native forest.
      
The top of the acoustically turbid zone is generally highest within the sediment column closest to the river mouths and lies within 10 ms (two-way travel time) of the sea floor in a nearly continuous area that covers over 530 km2.
      
From about day 80 on, the medullary tissue coalesces into a large, continuous area in the interior of the gland, surrounded by a narrow cortical glomerulo-fasciculata that becomes positive for 3β-hydroxysteroid dehydrogenase at about day 90.
      
A continuous area of Cl ?1?50?mg/kg is distinguished from the discharge fault to the Rhine River over a distance of 12?km.
      
One key difference in comparison with previous studies is that the PECB is part of the largest remaining continuous area of primary Atlantic forest, in the Serra do Mar coastal range.
      
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A general theoretical approach is developed to treat the effect of point imperfections on the spin waves in a ferromagnetic crystal. Special attention is paid to the formation of localized modes. As an example, the calculations have been carried out for a one-dimensional linear lattice. The main results obtained indicate the following features. A substitutional magnetic impurity atom may introduce more than one localized mode of spin waves. The conditions for the localized modes to appear and the positions of...

A general theoretical approach is developed to treat the effect of point imperfections on the spin waves in a ferromagnetic crystal. Special attention is paid to the formation of localized modes. As an example, the calculations have been carried out for a one-dimensional linear lattice. The main results obtained indicate the following features. A substitutional magnetic impurity atom may introduce more than one localized mode of spin waves. The conditions for the localized modes to appear and the positions of their energy levels are given in terms of J'S'/JS and J'/J. Here S' and S are respectively the spin quantum number of the impurity and that of the normal atoms. J' and J are respectively the exchange integral between an impurity and its neighbors and that between the normal neighboring atoms. Highly concentrated strains and interstitial atoms which cause the exchange interaction between the atoms in their neighborhood to increase lead also to the formation of localized modes. Furthermore, the dipole-dipole interaction has been taken into consideration with the conclusion reached that it should not destroy the existence of these localized modes. Discussions have been given to the discrete energy levels which appear below the continuous spectrum in case of J'<0. It is pointed out that the Holstein-Primakoff approximation adopted in the present work is not quite legitimate for certain cases in which on one or more atoms the spin deviation becomes not very much smaller than 2S or 2S'.

本文提出了一个处理磁性杂质或其他缺陷在磁性晶体中对自旋波频谱的影响的一般理论方法,并特别着重讨论了局域模自旋波。以一维线性格子为例进行计算的结果显示出:一个代位磁性杂质,可能产生不只一个高于连续带顶的局域模。其产生的条件和其能级位置均通过J′S/JS和J′/J表达出来,这里S′和S各为杂质原子和基质原子的自旋量子数,J′和J各为杂质与近邻之间和一般近邻之间的交换作用系数。高度集中的应变和间隙原子如致使邻近处的交换作用增大,也导致局域模的出现。我们也考虑了磁偶极矩相互作用的影响,证明其并不破坏这些局域模的存在。我们还讨论了在J′<0时,连续谱之下出现的局域模能级。我们也指出,在某些情况下,自旋偏离过于局域在较少数的原子上,本文中所采用的Holstein-Primakoff近似就不十分合法了。

This essay deals with the seasonal variations of spectra on mean monthly maps of 100 MB level in twenty years. It has been proved that although both the spectra of amplitudes and the phase angles in the subtropics and the westerlies exist significant seasonal variations, they are quite different from each other. This discontinuous zone of ultfalong waves is near 400 lat. in the Northern Hemisphere.

本文研究了多年月平均100毫巴图上波谱的季节变化。分析表明,西风带及副热带地区等压面高度的振幅位相谱都有着鲜明的季节变化,但它们差异甚大,这种超长波的不连续带约在40°N附近。 扰动动能谱逐月情况的分析表明,副热带地区纬向扰动动能谱及其前12个波分量之和的季节变化较为清楚。 文中还分析了角动量、感热南北输送谱及动俄转换率谱。发现它们的前12个波分量之和的季节变化,在副热带地区相对要较西风带清楚。并且,在副热带地区这些输送谱或转换率谱中,起主要作用的是一波,三、二波次之;而在西风带中,起主要作用的是二波,一、三波次之。

The influence of steady LED irradiation on the photocurrent spectra of the strained layer multiple quantum wells In_(0.15) Ga0.85 As (8nm)-GaAs (15nm) with 15 periods have been studied from 10 K to 300 K. The photocurrent peaks corresponding to various transitions decrease in different ways with the increase of LED irradiation intensity. By this means, the transitions from confined subband to continuum can be identified easily, and the conduction- and valence-band edge discontinuity has been determined directly...

The influence of steady LED irradiation on the photocurrent spectra of the strained layer multiple quantum wells In_(0.15) Ga0.85 As (8nm)-GaAs (15nm) with 15 periods have been studied from 10 K to 300 K. The photocurrent peaks corresponding to various transitions decrease in different ways with the increase of LED irradiation intensity. By this means, the transitions from confined subband to continuum can be identified easily, and the conduction- and valence-band edge discontinuity has been determined directly from the experimental energy values of various transitions. Consequently, the band offset of heavyhole valence band is obtained as Q_(?) = 0.38±0.01.

在10—300K温度范围,研究了稳态发光二极管(LED)辐照对15周期的In_(0.15)Ga_(0.85)As(8nm)-CaAs(15nm)应力层多量子阱的光电流谱的影响。各跃迁过程对应的光电流峰的强度随LED光强的增大而减弱,并且具有不同的变化规律。据此可区分出束缚子带和连续带间的跃迁及其亚结构,并由跃迁的能量位置,直接确定导带和价带的不连续量,得出重空穴价带的能带台阶Q_v=0.38±0.01。

 
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