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特征辐射
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  characteristic radiation
     Some features of special hollow-cathode lamps of 9 hydride forming elements(As,Sb,Bi,Hg,Se, Te,Ph,Sn and Ge),including relation between differently pulsed peak current and atomic fluorescence intensity,stability of characteristic radiation intensity and temperature influence on the stability,are studied.
     本文研究了As、Sb、Bi、Hg、Se、Te、Ph、Sn和Ge九种元素特种空心阴极灯的不同的峰值电流与荧光强度关系、特征辐射强度的稳定性以及温度变化对稳定性的影响等分析特性。
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     In the stage of Al characteristic radiation,electron number density of the plasma was about 2×10(18)cm(-3).
     在特征辐射时期,电子密度大约是2×1018cm-3。
短句来源
     Study on Time-resolved Spectra Shape of Aluminum Plasma's Characteristic Radiation
     Al等离子体特征辐射时间分辨谱线线形分析
短句来源
     Electron number density of the plasma in the stage of Al characteristic radiation was estimated.
     估算了特征辐射时期的电子密度。
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  “特征辐射”译为未确定词的双语例句
     The emission spectrum of Xe + 2Cl - in HCl+Xe doped crystalline CO, excited by 308 nm laser, are firstly observated.
     报道HCl+Xe掺杂CO矩阵晶体中,在308nm激光的激发下,首次观测到准分子Xe+2Cl-的特征辐射荧光谱。
短句来源
     The measuring system is made up of an intensified spectroscopic detector ICCD, a SpectraPro-275 spectrograph, and a digital delay generator DG535. By analyzing the spectra obtained, the reaction products OH, CH, C2 , C3 , CO, CO2 , CHO and CH2O were identified according to their characteristic electronic and vibrational bands, which indicates that these molecules and radicals were produced during the DDT process of epoxypropane.
     根据由碳、氢和氧组 成的小分子和自由基的特征辐射谱带带头波长值,经过对所测光谱进行分析和辨认,确定了在环氧丙烷的 爆燃转爆轰过程中有OH,CH,C2,C3,CO,CO2,CHO和CH2O这些反应产物出现。
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     The characteristics of the plasma radiating at 115 mJ were described in detail, and those of Ar + radiating at the other energies were briefly analyzed.
     详细描述了 115mJ时等离子体的辐射特征 ,简要分析了其他脉冲能量下Ar的特征辐射规律。
短句来源
     The electronic temperature, intensities of all lines and continuous spectra gradually increased with the increment of laser energy, and they got to maximum at different laser energy.
     认为Cu等离子体羽的发光机制是由电子与粒子的碰撞传能、电子与离子的复合形成的; 随激光能量的增加,Cu等离子体特征辐射(分立谱)、连续背景辐射(连续谱)、电子温度都出现最大值;
短句来源
     The experimental results showed that both the spectral lines and background increase with improvement of ambient pressure, but near 1 atmosphere, they decrease rapidly, the maximum spectral intensity occurred at about 10 kPa, 180 ns after laser beam shot, 0.1 mm from the surface.
     但气压过高 ,在接近大气压时 ,特征谱和连续谱都下降 ; 最大特征辐射强度在 10kPa、靶前 0 .1mm处、延时 180ns获得 ;
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  相似匹配句对
     THE CHARACTERISTICS OF RADIATION CLIMATE OF SANJIANG PLAIN
     三江平原的辐射气候特征
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     THE RADIATION CLIMATE OF TAIWAN, CHINA
     台湾省辐射气候特征
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     The Characteristic of Software
     软件的特征
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     (2)essential features;
     基本特征;
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     On radiation from printed circuits
     印制电路的辐射
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  characteristic radiation
Until recently, the measurement of the local gas and plasma density through the intensity of the characteristic radiation induced by an electron beam was being carried out for argon only.
      
Quantitative proximate X-ray analysis of loose raw materials based on detection of diffraction and characteristic radiation
      
Efficiency of the generation of characteristic radiation by stopping low-energy electron beams
      
A relationship is established between the characteristic radiation relaxation time and the fast diffusion cooling of electron gas after the jump in the near-wall potential.
      
Absolute differential cross sections of non-characteristic radiation emitted in energetic heavy-ion collisions (EP=3.92-48 MeV,Z=11-22) can only be explained in the framework of quasimolecular radiation.
      
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Using Er3+ characteristic emission, it is observed that distribution of electric field strength in thickness direction is inhomogenous in ZnS:Cu,Er,Cl DC thin film EL devices. Three high field regions and two low field regions are measured.We have measured the EL efficiencies in these regions and found that EL efficiency is higher in the high field region and lower in the low field region.The reason for formation of high field regions and relation between EL efficiency and electric field strength are discussed...

Using Er3+ characteristic emission, it is observed that distribution of electric field strength in thickness direction is inhomogenous in ZnS:Cu,Er,Cl DC thin film EL devices. Three high field regions and two low field regions are measured.We have measured the EL efficiencies in these regions and found that EL efficiency is higher in the high field region and lower in the low field region.The reason for formation of high field regions and relation between EL efficiency and electric field strength are discussed in this Paper.

利用Er~(3+)离子的特征辐射,探测出ZnS:Cu,Er,C1薄膜直流电致发光器件中沿膜厚度方向场强分布是不均匀的:有三个高场区两个低场区。并测最了这五个区域里的发光效率,得出高场区的发光效率高,低场区的发光效率低。文中对高场区的形成原因及发光效率与场强的关系进行了讨论。

Good electroluminescent diodes have been fabricated from neodymium-implanted or erbium-implanted zinc selenide crystals. These diodes have an external power efficiency of 5×10-5 w/w and can be operated at very low voltage and at low temperature (e.g.77K) . They Show the characteristic emission spectra of Nd3+ or Er3+.

由铒和钕注入的ZnSe单晶所制备的发光二极管有很好的电致发光。这些二极管的外能量效率大约为5×10~(-5)W/W,并且可以在很低电压下和低温下(77K)工作。这些二极管发射光谱显示了三价稀土离子饵和汝的特征辐射

Energy transfer from Ce3+ to Tb3+ in various hosts has been normally observed. We report, in this paper, that the energy transfer in the reverse direction, i.e. from Tb3+ to Ce3+ in CaS: Ce,Tb phosphor.Excitation spectrum of 500nm emission of Ce3+ in CaS:Ce consists of two bands. The band peaking at 280nm corresponds to the excitation host and that at 450nm relates to the 4f-5d transition of Ce3+ . The excitation spectrum of 436nm emission of Tb3+ in CaS:Tb consists of the 280nm band as well as a band at 320nm,...

Energy transfer from Ce3+ to Tb3+ in various hosts has been normally observed. We report, in this paper, that the energy transfer in the reverse direction, i.e. from Tb3+ to Ce3+ in CaS: Ce,Tb phosphor.Excitation spectrum of 500nm emission of Ce3+ in CaS:Ce consists of two bands. The band peaking at 280nm corresponds to the excitation host and that at 450nm relates to the 4f-5d transition of Ce3+ . The excitation spectrum of 436nm emission of Tb3+ in CaS:Tb consists of the 280nm band as well as a band at 320nm, which is a characteristic of Tb3+. For CaS:Ce, Tb, however, the excitation spectrum of Ce3+ emission at 505nm also consists of the 320nm band. This indicates that the excitation energy may be transferred form Tb3+ to Ce3+.Under the excitation of 320nm, CaS:Ce, Tb gives emission both from Ce3+ and Tb3+ , and the intensity of Ce3+ emission increases with the concentration of Tb3+. The enhancement of Ce3+ luminescence by codoping of Tb3+ can be as large as 3 times.The decay time τc of Ce3+ luminescence in CaS:Ce is less than 1 Us. The decay of Tb3+ in CaS:Tb consists of a fast decay component τT1 = 80μs and a slow one τT2= 1400μs, the Tb3+ concentration being 3 ×10-5mol. It can be seen that the decay of Ce3+ emission in CaS: Ce,Tb has now a slow component, very similar to the decay of Tb3+ luminescence. On the other hand, the decay of Tb3+ emission depends on the concentration of Ce3+ . All these results imply that the energy is non-radiatively transferred from Tb3+ to Ce3+ .Owing to the overlapping of the excitation spectrum of Ce3+ emission in CaS:Ce and the emission spectrum of CaS:Tb, we believe that the energy transfer is a reasonable process .

本文通过发射光谱、激发光谱和发光的衰减特性,研究了三价稀土离子Ce~(3+)和Tb~(3+)在CaS基质中的相互作用。实验结果表明,在CaS中Tb~(3+)敏化了Ce~(3+)的发光,监测Ce~(3+)的发光(505nm),在激发光谱中出现Tb~(3+)中心特征辐射的激发带。而且在CaS:Ce、Tb中,Ce~(3+)中心的发光衰减变慢,衰减后期的慢成份正是反映了能量施主Tb~(3+)的衰减特性,证明在CaS:Ce、Tb中存在着Tb~(3+)到Ce~(3+)的能量传递。

 
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