跃迁

基本解释 (translations)

transition

与跃迁相关的网络例句 [注：此内容来源于网络，仅供参考]

Based on the similarity of structure between the antifluoride and alkali antimonide, the possible transitions taking place in the Brillouin zone corresponding to the structure in the optical spectra are identified for Na_2KSb,Css_3Sb and K_2CsSb cathode.

利用反荧石结构和其结构的相似性，确定了Na2KSb、Cs3Sb和K2CsSb阴极在光谱结构上对应布里渊区中发生的光学跃迁，发现多碱阴极的跃迁更接近晶态，而Cs3Sb和K2CsSb阴极和非晶态的非常类似，在Na2KSb中出现的来自Δ、Σ方向跃迁形成的极大峰并不出现在Cs3Sb和K2CsSb。

Two kinds of electron transition processes which lead transition metal complexes to show their colours were discussed.

讨论了导致过渡金属配合物显色的二种电子跃迁过程，只有当电偶极跃迁矩积分的被积函数的对称性允许时，才有可能产生颜色；分裂能的差别，导致跃迁能的不同，因而呈现出不同的视色。

The four fluorescence peaks are generated separately by the combined actions of the methyl parathion and the acetone. In methyl parathion molecule, there are the transition of n electrons in nitryl, the transition of π electronic structure formed by the oxygen atom and the benzene ring and the transition of n electrons in P=O group. In acetone molecule, there is the transition of n electrons in C=O group.

分析得到，四处荧光峰分别是溶剂丙酮分子中C=O上的n电子跃迁、硝基上的n电子跃迁、甲基对硫磷分子中氧原子与苯环形成的大共轭π电子结构跃迁以及P=S上的n电子跃迁共同作用产生。

The energy levels of free metallic ion were calculated with a 13 parameters model including the 2-body and 3-body interactions. The Stark energy levels of crystal field were calculated using the model proposed by Newman based on 1 electron orbital approximation The f-f oscillator strength calculation includes the contribution of electrostatic-induced, ligand polarization, vibronic-induced, magnetic dipolar transitions.

其中，自由f离子能级计算采用包括双电子与叁电子组态相互作用的二三参数模型，晶体场Stark分裂计算采用单电子轨道近似，用Newman角叠加模型计算晶体场参数。f-f跃迁振子强度计算包括静电诱导偶极跃、配体极化偶极跃、振动诱导电偶极跃迁及磁偶极跃迁的贡献。

Applying the Large-scale multi-configuration Dirac-Fock wave functions, we calculated the parameters such as wavelength, oscillator strengths and excited energy for the transitions related to lightning spectra. The most important effects of relativity, correlation, and relaxation are included in the computational model. Comparison of the calculated results with experimental spectra shows that the spectra in plateau area have a distinctive characteristic. Beside the lines of lower excited state with n=3 in NII ions, transitions of NI and OI are increased, their excited energy is around 13~14eV, and there are rarely lines from OII ion.

将原子结构的理论应用於闪电光谱的研究，用多组态Dirac-Fock方法，计算了有关光谱线的波长、振子强度以及相应的激发态能量等参数，理论与试验观测资料进行比较分析后发现，高原地区闪电首次回击光谱的结构及跃迁特性与其他地区有明显的区别，除NII离子n=3的低激发态产生的跃迁谱线外，激发能量为13~14eV左右的中性NI和OI的跃迁增多，但很难观测到OII离子的跃迁谱线。

A pplying the Largescale multiconfiguration DiracFock wave functions, we cal culated the paramete rs such as wavelength, oscillator strengths and excited energy for the transitio ns related to lightning spectra. The most important effects of relativity, corre lation, and relaxation are included in the computational model. Comparison of th e calculated results with experimental spectra shows that the spectra in plateau area have a distinctive characteristic. Beside the lines of lower excited state with n=3 in NII ions, transitions of NI and OI are increased,their excited energy is around 13～14eV, and there are rarely lines from OII ion.

将原子结构的理论应用于闪电光谱的研究，用多组态DiracFock方法，计算了有关光谱线的波长、振子强度以及相应的激发态能量等参数，理论与试验观测资料进行比较分析后发现，高原地区闪电首次回击光谱的结构及跃迁特性与其他地区有明显的区别，除NII离子n=3 的低激发态产生的跃迁谱线外，激发能量为13～14eV左右的中性NI和OI的跃迁增多，但很难观测到OII离子的跃迁谱线。

In chapter two,we review and develop mechanism for three cooperativetransitions,including the cooperative electronic transition of two RE ions,external and internal vibronic transitions.We explain the principle of thesecooperative transitions and obtain,the relations between the oscillator strengthof these transitions and other parameters.

第二章回顾、总结和发展了几种联合跃迁，包括稀土离子对的联合电子跃迁、内电子振动跃迁和外电子振动跃迁的量子力学理论，解释了这些联合跃迁产生的机理，得到了其跃迁的振子强度同各种因素的关系。

Using the time-match semiempirical models for two flares (one is classified as a SB flare and the other a 2B flare), which were deduced from the spectral data obtained with the solar tower telescope of Nanjing University, we calculate the radiative loss at different phase of the flares.

针对我们已经建立的二个定态色球耀斑半经验模型，计算了耀斑不同时刻下的色球辐射损失速率，包括氢在四个能级假设下的所有跃迁、CaⅡ在五个能级下的所有跃迁、MgⅡ在三个能级下的所有跃迁、以及负氢离子的自由——自由和束缚——自由跃迁等。

Besides,the infrared and Ramam activity of the vibration mode of the molecule and some possible transition of the vibration spectrum has also been researched.The results show: the vibration mode of Cr6 molecule is Гvib=2A1g+2E...

研究结果表明，其振动模式是红外活性，振动模式A1g、Eg和T2g是拉曼活性，振动模式T1g和T2u是非活性的，红外跃迁可以跃迁到T1u，拉曼跃迁可以跃迁到A1g、Eg和T2g。

In chapter 2 and 3, experimentally, using the Angular-Resolved high-resolution fast Electron Energy Loss Spectrometer , at the condition of 2. 5 keV incident energy and 50-60 meV energy resolution, we measured the Optical Oscillator Strength Density Spectra for the excitations of 4p, 4s or 3d electron. The oscillator strengths for excitations of the valent shell 4p electron were obtained, and comparisons were done between presently experimental and previously experimental and theoretical results. The experimental results of different groups agree with each other approximately, but the semi-experientially theoretical results do not match with the experimental results. The delayed maximum in the photoabsorption spectra was discussed. It should arise from the transition of 4p→∈d. For the excitation of the inner-valent 4s electron, the discrepancies for the resonant structures in previous electron-impact results and photoionization results were clarified in present work, which confirms again that the fast electron impact method is suitable to measure the optical oscillator strengths. The autoionization Rydberg series 4s〓ns (n=5, 6, 7) and 4s〓nd (n=4, 5, 6, 7) were identified without ambiguity by the measurement at 0°, 2° and 4°scattering angles. The energy levels and natural widths of the excitations of Kr3d and Ar2p inner shell, including optically allowed and forbidden transitions, were determined. The widths of these inner shell excitations are nearly the same, which was interpreted by the Resonant Auger effect .

在第二章和第三章，实验上，使用角分辨的高能量分辨快电子能量损失谱仪，在2.5keV电子入射能量和50-60meV能量分辨下，测量了Kr原子由价壳层4p到内价壳层4s，再到内壳层3d电子激发的光学振子强度密度谱；得到了价壳层4p电子激发束缚态的光学振子强度，与前人实验和半经验理论结果作了细致的比较，说明几家实验是比较符合的，但半经验的理论计算存在问题；分析了光吸收谱中的延迟极大现象，说明在第一电离阈值以上几个eV范围内的极大值源于4p→εd跃迁产生的延迟极大；对于内价壳层4s激发的自电离区，澄清了前人实验中电子碰撞方法和光学方法在共振结构上存在差异的问题，再一次肯定了快电子碰撞方法是获得绝对光学振子强度的一种好方法；通过在非0°散射角的测量（如2°和4°），清楚地标识了4s电子激发的光学禁戒跃迁自电离里德堡系列4s〓ns（n=5，6，7）和4s〓nd（n=4，5，6，7）；通过在0°和4°散射角的测量，观测并标识了几个新的内壳层光学禁戒跃迁能级，得到了Kr原子3d和Ar原子2p内壳层激发态（包括光学允许和禁戒跃迁形成的）的能级位置和自然宽度，用共振俄歇效应解释了这些内壳层激发态（不管是光学允许还是禁戒跃迁产生的）的自然宽度彼此比较接近的原因。

与跃迁相关的网络解释 [注：此内容来源于网络，仅供参考]

transition, electron：电子跃迁

偶极加马跃迁 transition, dipole gamma-tray | 电子跃迁 transition, electron | 电子捕获跃迁 transition, electroncapture

transition, favored：有利跃迁

电子捕获跃迁 transition, electroncapture | 有利跃迁 transition, favored | 禁制跃迁 transition, forbidden

quantum leap：量子跃迁

quantum jump 量子跃迁 | quantum leap 量子跃迁 | quantum mechanics 量子力学

radiative transition：辐射[性]跃迁

"辐射转移","radiative transfer" | "辐射[性]跃迁","radiative transition" | "辐射[性]跃迁概率;辐射[性]跃迁机率","radiative transition probability"

radiative transition：辐射跃迁=>放射遷移

radiative transfer equation 輸送方程式 | radiative transition 辐射跃迁=>放射遷移 | radiative transition probability 辐射跃迁概率

transition probability：跃迁概率

transition point 转变点 | transition probability 跃迁概率 | transition radiation 跃迁辐射

transition probability：跃迁几率

transition point 转变点 | transition probability 跃迁几率 | transition radiation 跃迁辐射

transition, zero-zero：零-零跃迁

振动跃迁 transition, vibrational | 零-零跃迁 transition, zero-zero | 过渡的;跃迁的 transitory

transition, intersystem：系间跃迁

困难跃迁;受阻跃迁 transition, hindered | 系间跃迁 transition, intersystem | 异构跃迁 transition, isomeric

transition, unfavoured：不利跃迁

二阶梯式异构跃迁 transition, two-step isomeric | 不利跃迁 transition, unfavoured | 唯一跃迁;稀有跃迁 transition, unique