重原子

求解非中心对称晶体结构的人工相位退化法（Ⅱ）&试解P21空间群含重原子的复杂晶体结构

Artificial phase degeneration in the determination of non-centrosymmetric structures (ⅱ) & an example of solving a complex heavy atom containing crystal of space group p2_1

详细探讨了重原子浓度、酸度、除氧剂用量等环境因素对RTP发射的影响。

Various factors of effect on MS-RTP of QN and QD are discussed in detail including the concentration of heavy atom , the concentration of SDS , pH effect and deoxygenation condition .

研究了13种吨染料在滤纸基质上的室温燐光（RTP）性质。发现具有重原子取代基的荧光素本身能有较强的RTP发射。

The room temperature phosphorescence ( RTP ) properties of 13 xanthene dyes on filter paper have been studied .

结构测定表明它的结构属于类质同象，重原子（Pb，Ba）的周围有九个氧原子。

The struetural determination shows that its structure belongs to isomorphism and the heavy atoms ( Ba . Pb ) are surrounded by nine oxygen atoms .

利用MeV量级能量的团簇束即可达到GeV重原子离子在物质中的能量沉积密度，在这种条件下，载能团簇与物质作用将成为丰富新现象的源泉。

The extremely high density of deposited energy of GeV heavy ion can be reached with MeV cluster beams . Under this conditions new phenomena should be discovered .

研究发现样品温度对RTP发射强度有影响，重原子TI/SDS有一个临界比率值，为30%，达到此临界比例值后能获得高的RTP值。

Sample temperature is found to have a moderate effect on RTP intensity . The T1 / SDS ratio exhibits a critical , value 30 % which dramatically affects on luminescence intensity .

DV-Xα方法适于较大分子，特别是重原子金属络合物和原子簇的计算研究；

DV - X α was adapted to big molecules , especially for heavy metal atom and atom cluster .

详细比较了EBH和DBP的重原子效应，结果表明，二者性能类似，而EBH较DBP的实验条件宽容。

The heavy atom effect of EBH and DBP is compared . The obtained results are similar each other . Meanwhile EBH is superior to DBP in the experimental condition .

虽然本例只处理了含重原子晶体Patterson函数的双解问题，但所用手段同样适用于处理同晶型法和反常散射法的双解。

Although only the problem of ambiguity of Patterson method is treated in this example , but the same approach can be applied to that of the isomorphous replacement method and the anomalous scattering method .

由此可以得出结论：对于重原子（或离子），用ADK模型得到的离子产额与实验结果符合得更好。

It gives a conclusion that the ADK model can be given better results for ion production of heavy atoms ( or ions ) than ones of the BSI model .

以1,2-二溴丙烷（DBP）为重原子微扰剂，建立了痕量西维因（CBL）的β-环糊精（β-CD）诱导室温磷光（RTP）分析法。

A analysis method for determination of trace carbaryl ( CBL ) was established based on the room temperature phosphorescence ( RTP ) induced by β - cyclodextrin (β - CD ) in the presence of heavy atom perturbation of 1,2-dibromopropane ( DBP ) .

结果表明，由于氘原子与运动的重原子间的大角散射，最大氘原子的能量可超过6E0。

It is shown that the maximum deuteron energy can exceed six times of their inital energy due to the wide - angle scattering between deuterons and moving heavy atoms .

结构测定表明，两个NTO五元环平面的二面角为82.42°，有一分子水参与配位，重原子铅的配位数为6。

Determination of its structure shows that the dihedral angle of the two five-membered rings of NTO is 82.42 °, that the ligands contain one water molecule , and the heavy atom ( Pb ) is surrounded by six atoms .

应用Patterson法求解含有重原子的晶体结构时，时常由于重原子具有了高于整个结构的赝对称性而导致轻原子位置的多解（双解、四解乃至八解）。

In solving the crystal structures containing heavy atoms by patterson method , if the heavy atoms have a pseudo-symmetry which is higher than that of the whole structure , this will result in multi-solution positions of light atoms ( two , four or eight possible positions ) .

研究结果表明，不同重原子溶液可以选择性的增强三种物质的纸上磷光，且灵敏度高，绝对检出限分别为1.25ng，0.87ng，0.83ng。

The results showed that different heavy atom solution could strengthen the phosphorescence intensity of above-mentioned three substances selectively and the absolute detection limits of 7 , 8-benzoquinoline , fluorene , fluoranthene were 1.25 ng , 0.87 ng , 0.83 ng per spot respectively .

应用重原子法测定了晶体结构。

The structure was solved by heavy - atom method .

多解型重原子法

The heavy atom method of multi - solution type

对于重原子，必须考虑自旋-轨道耦合相对论效应。

Alternatively speaking , the effect of spin-orbit-coupling is uppermost in relativistic effects .

探针的工作原理是基于探针-金属离子-阴离子络合配位和重原子的三重态荧光淬灭效应。

Its working principle is based on probe-metal-anion coordination and heavy atom effect .

含重原子晶体结构的相位修正

Phase refinement on the crystal structures containing heavy atoms

结构用重原子法解出。

The structures were solved by Patterson method .

关于重原子核的自发π介子发射问题

On the spontaneous pion emission by heavy nuclei

若干较重原子和轻原子能级结构和跃迁性质的理论研究

Theoretical Studies of Transition Probabilities and Energy Levels of Some Heavier and Light Atoms

萘的卤素取代重原子效应的红外及荧光光谱的理论研究

Theoretical Study on the Infrared and Fluorescence Spectra of Weight Atom Effect of Halogenated Naphthalene

铽离子敏化发光分析法中重原子效应研究

Heavy Atom Effect on Terbium Sensitized Luminescence

测定含重原子晶体结构时出现多解情况的一般规律

General rule on the appearance of multiple solution in the determination of crystal structures containing heavy atoms

溴代环乙烷作重原子微扰剂测定痕量四种多环芳烃&化学除氧技术在环糊精诱导室温磷光法中的应用

The Application of β - Cyclodextrin Supramolecular System to Determining Four Aromatic Hydrocarbons by Room Temperature Phosphorimetry

中心对称情况下由重原子引起的八重解问题

The problem of eight-fold multiple solution resulting from the special arrangement of heavy atoms in centrosymmetric case

磷光寿命法研究无保护流体室温磷光的重原子效应和发光动力学参数

Study on the Determination of Photophysical Parameters of the Non Protected Fluid Room Temperature Phosphorescence by Lifetime Method

重原子所提供的信息对测定含重原子晶体结构有重要的作用。

Information drawn from the heavy atom plays an important role in the determination of crystal structures containing heavy atoms .