聲子光譜 的英文怎麼說
中文拼音 [shēngziguāngpǔ]
聲子光譜
英文
phonon spectra-
The investigation of the exciton - phonon coupling of nn3 center offers a direct proof that all the phonon replicas are the phonon sidebands governed by the huang - rhys " multiphonon optical transition theory, and clarifies the speculations that the replicas associated with optical phonons are independent bound states of exciton - phonon complexes or due to other alternative mechanisms
對其變溫pl譜的研究還發現，在nn :的聲子伴線區域呈現出的異于多聲子光躍遷理論的現象，說明在該區域可能存在著其它的n雜質態。In our experiments, these complexes, produced in supersonic beam expansions, are amenable to high resolution resonant two - photons ionization spectroscopy, which make it possible to obtain detailed information on their electronic - vibrational states. through resonant ionization spectra and together with time - of - flight mass spectrometry in supersonic molecular beam, the internal rotation for ch3 and intermolecular vibration for atom ar ( or n2 ) in the complexes ( c6h5ch3.
實驗中採用了高解析度的共振電離光譜技術和超聲分子束技術，通過共振電離光譜和飛行時間質譜技術的手段探明了復合物c _ 6h _ 5ch _ 3 … n _ 2 、 ar的電子態、振動態以及甲基（ ch _ 3 ）內轉動的詳細情況。The effect of polarons on the luminescence properties of quantum dots ( qds ) is an important problem in qd research and applications. we review the recent progress in the concept, possibility and size dependent energy variance of confined polarons in various qds. we suggest that the formation of polarons is related to intrinsic and / or extrinsic phonons and that the idea of confined polarons that we recently proposed can be used to explain the specific spectrscopic characteristics of oxidized nanosilicon systems, even single nanosilicon structures. this model may help to reveal the luminescence mechanism of porous silicon
量子點中的極化子效應是當前量子點研究中的重要問題，其特徵急需了解.文章在綜述了量子點中限域極化子的概念、可能性和能量隨尺寸的變化規律之後，提出了界面限域極化子模型，該模型首次指明本徵聲子和外來聲子都可能對界面限域極化子的形成有貢獻.作者利用此模型分析了多孔硅體系中的光譜特徵，證實了表面覆有氧化層的納米硅的行為十分符合量子限域極化子的特徵.這一極化子模型與單個納米硅結構的發光譜十分一致，此結果對最終揭示多孔硅發光機理有重要意義According to the raman selection rule and the pl measurement, it is reasonable to evaluate the quality of galnp / algalnp mqw by analyzing the relative intensity ratio of a1p - lo / to. ( 4 ) a new modified random element isodisplacement ( mrei ) model is set up to calculate the dependence between the long - wavelength optical phonon frequencies and the composition of iii - v - type ab1 - xcx mixed crystals. the second neighbor force constants are still assumed to be a linear variation with the composition, but the two first neighbor force constants can be evaluated to be a negative exponent variation with the composition, using the overlapped repulsive potential of the ion crystal combination
通過實驗我們找到了在這些結構參數上生產gainp algainpmqw的較理想的結果； （ 3 ）首次用喇曼（ raman ）散射方法研究了常溫下的gainp algainp多量子阱結構，除了指認出喇曼光譜中各光學聲子模外，還結合樣品光致發光譜的測量結果，分析發現喇曼光譜中alp - lo to的相對強度比可以在一定程度上評定晶體gainp algainpmqw的生長質量； （ 4 ）在修正的隨機元素等位移? mrei模型的基礎上建立了一個新模型，計算了ab _ （ 1 - x ） c _ x型?族半導體混晶的長波長光學聲子模頻率的組分變化關系。The main works and results we have accomplished are as follows : 1 ) red - detuned locking of cooling / trapping laser to the cycling transition of cesium cooling has been accomplished by means of a double - passed acoustic - optical frequency shifting system and the technique of saturated absorption spectroscopy. the short - term residual frequency jitter is less than 350khz ; 2 ) automatic controlling system by computer programs has been established for laser cooling and trapping and cavity qed experiment. the laser and magnetic fields can be controlled by the acoustic - optical modulator and the electronic - controlled logic gate respectively
具體如下： 1 ）採用了往返兩次通過的聲光頻移系統結合飽和吸收光譜技術的實驗方案，實現了冷卻俘獲激光頻率相對于銫原子冷卻循環躍遷的負失諧鎖定，短期頻率穩定度約在350khz以內，並可方便地調節其負失諧量而無須對后續光路再作調整； 2 ）建立了一套基於計算機程序控制的、銫原子激光冷卻與俘獲實驗所需的時序控制系統。At the same time, we show that under a proper nitrogen doping concentration, due to the " concentration quenching " effect, the full spectrum of the nn3 center ( i. e., its zero phonon line and various phonon replicas ) is revealed without the interference from the spectra of other higher energy centers ( especially nn4 - nn6 )
Gapi . xn :的發光譜在低組分下由尖銳的nn 。線及其聲子伴線組成，隨著組分x的提高，這些尖銳的的譜線逐漸展寬，並向低能端移動，在這個過程中，激子的能量傳輸起著重要作用The following equipment need buffer room ( the buffer room is used for safe cabinet of gas cylinder and noisy compressor and keeping cleaner ) : aas, afs, gc - ms, and lc - ms
5需要設緩沖間的儀器（緩沖間用來放置安全氣櫃瓶和有噪聲的壓縮機以及保持清潔）原子吸收，原子熒光，氣相色譜質譜，液相色譜質譜。If it is possible, the rooms for gc, icp, icp - ms should have a buffer area for gas cylinder cabinet and noisy compressor storage ; thereby the buffer room will keep the inner area of the room clean
建議有條件的情況下，氣相色譜、等離子體發射光譜、等離子體質譜也應建立緩沖間，緩沖間用來放置安全氣瓶櫃和有噪聲的壓縮機以及保持清潔） 。The article mainly includes the design of experimental set and concentration retrieve arithmetic. as doas technique is a kind of weak light detecting technology, it is the key to increase the snr ( signal - to - noise ) of spectral signal
由於差分吸收光譜技術是一種弱光檢測技術，所以對于其相關實驗裝置來講，提供高的信噪比是關鍵，從而使得限制雜散光、消除各種光電子噪聲等變得很重要。Firstly, this paper introduces the molecule ’ s structure, the molecule ’ s spectrum and infrared spectrum structure of so2, and then the theory of gas detection using photoacoustic effect is discussed
本文從分子結構和分子光譜理論出發討論了so2的紅外光譜結構，介紹了氣體光聲光譜檢測理論及光纖光相位調制解調的技術和方法。After ameliorate the hardware of the spectrometer, there are many kinds of noise added to the system inevitably. they are hot - noise and disperse - noise in electron circuitry and the wavelength excursion due to the grating turning
光譜儀經過硬體改造以後，不可避免地將電子方面的噪聲帶入到系統中，其中主要包括電子線路中的熱噪聲和散粒噪聲（白噪聲）以及光柵轉動過程中的機械誤差引起的波長漂移。Water quality - determination of total mercury by flameless atomic absorption spectrometry - part 2 : method after pretreatment with ultraviolet radiation
水質.用無火焰原子吸收光譜法測定總汞含量.第2部分:用超聲波輻射預處理后的方法分享友人