| 1. | Intrinsically the calculation of line strength and shape is a quantum mechanical problem .
从本质上来说，谱线强度和轮廓的计算是一个量子力学的问题。 |
| 2. | Influence of buffer gas in the hcd lamp upon the line strength of the rare - earth element
灯中的载气对稀土元素谱线强度的影响 |
| 3. | This shows there is a good linear relation between the spectral intensity and the elemental density
结果表明元素含量与谱线强度之间有良好的线性关系。 |
| 4. | The experimental results reveals that the spectrum gradually evolves from nonequilibrium state to equilibrium state after the shock wave passing
在非平衡态和平衡态，光谱的各条谱线强度有明显的差别。 |
| 5. | But in the case of fixed target the spectra intensity become weak with the target long exposed to the laser radiation
反之使激光照射于固定靶上的固定点， libs信号的强度逐渐下降，从而影响谱线强度的稳定性。 |
| 6. | ( 2 ) the effect of rotary target and fixed one on libs " intensity is studied . it is shown that the spectra intensity is stable when the rotary target is used
( 2 )研究了靶点的性质对libs信号强度的影响，实验结果表明，在测量过程中若每个脉冲激光照射在固体靶上的不同点，谱线强度具有很高的稳定性。 |
| 7. | Qualitative analytical method in x - ray fluorescence spectrometry was discussed , and a quantitative method with fluorescence intensity ratio combining other method was established
摘要本文探讨了x射线荧光光谱法元素定性分析检出判定方法，并提出了一种与其他分析方法结合、利用荧光谱线强度比对对元素进行定量的单点外标法。 |
| 8. | According to the ratio of the intensities of the double lines , the ratio of transition probability of the double lines was deduced . compared with the theoretical value , we found they coincided with each other exactly
对a1原子共振双线( ali394 . 40nm和ali396 . 15nm )的谱线线型进行分析，扣除连续谱线的影响，计算谱线强度比，得到其跃迁几率比是w _ 1 w _ 2 ( |
| 9. | ( 5 ) the intensity and s / b of libs are investigated in detail at the different buffer gas , gas pressure , and laser power . the results show that under the 120 mj laser energy , for ar the best s / b is at 200 torr pressure , but for air at 100 torr and he at 300 torr . duration of atomic spectra in ar is longer than that in air
( 5 )实验测定了不同的缓冲气体和气压以及不同的入射激光脉冲能量对原子谱线强度和背景光的影响，结果显示在氩气环境下，当气压约为200torr 、激光的能量约为120mj时， libs的s b最大；在空气和氦气中获得最佳s b时的气压约分别为100torr和300torr ；原子谱线在氮气环境中持续的时间要比在空气中持续的时间长。 |
| 10. | If the focal point of the len shifts around the surface of the sample , the mass ablation , the temperature of the plasma and the spectral intensity appear asymmetric and their maximum occur at the location which is about 0 . 4mm under the surface of the sample . ( 2 ) to the plasma of the aluminum alloy sample , when the operating voltage is 1600v , the height from the observed location of the plasma to the surface of the sample is 2mm and the argon pressure is 660 torr , the spectral intensity have the maximum values
( 2 )对于标准铝样品，在激光器工作电压为1600v 、等离子体观测高度为2mm 、氩气压力为660乇时，其谱线强度最强；以al 308 . 22nm 、 al 309 . 27nm两条谱线为分析线，发现随着环境气压的增大，谱线自吸效应明显增强，当环境气压达到600 - 700乇时，谱线几乎产生自蚀。 |
