1) Doppler broadening spectrum
多普勒展宽谱
1.
By means of the characteristics of positron annihilation,a system with 2 high purity Ge detectors and multiparameter analyzer for measuring coincidence Doppler broadening spectrum of positron annihilation radiation has been built in this work.
根据正电子湮没的特点,研制了双高纯锗探头—多参数分析器符合正电子湮没辐射多普勒展宽装置,通过采用符合技术,大幅度地降低了正电子湮没辐射多普勒展宽谱的本底,谱线的峰高与本底之比高于105。
2.
The ratio curves of Finemet alloy elements and Finemet amorphous ribbons(annealed at 350 ℃,380 ℃ and 400 ℃ for 10min respectively)were measured with the Doppler broadening spectrum of positron annihilation which adopted two HP-Ge detector coincidence technique to investigate the extranuclear electron interaction during annealing process.
采用双高纯锗探头符合的正电子湮没辐射多普勒展宽谱测量了Finemet合金各组元的商谱以及在350,380,400℃下退火(10 min)的Finemet非晶薄带的商谱,对Finemet合金热处理过程中元素核外电子间的相互作用进行了研究。
3.
5 alloy and of the zone around the structural free volume in the undercooled liquid region was investigated by X-ray diffraction (XRD) and positron annihilation techniques(PAT)-Doppler broadening spectrum.
采用X射线衍射(XRD)、正电子湮没技术(PAT)-多普勒展宽谱,研究Zr41Ti14Cu12。
2) Doppler broadening
多普勒展宽
1.
Effect of spectral line with Doppler broadening on optical bistability in a multi mode ring laser;
激光谱线的多普勒展宽对多模环型激光器中光学双稳态产生的影响
2.
Ion temperature and recycling particle flow velocity are obtained from Doppler broadening and Doppler shift with Gaussian fitting.
利用多道光学分析仪（ＯＳＭＡ）测量ＨＴ６Ｍ托卡马克限制器前Ｈα线形分布，通过高斯拟合由多普勒展宽和多普勒频移分别得出等离子体离子温度和再循环粒子流
3.
The results show that due to the effect of Doppler broadening the light speed reduction is significant in a range of ±600MHz one-photon detuning.
结果表明,由于多普勒展宽效应的存在,在单光子频率失谐±600MHz的范围内,光减速效应较为显著。
3) Doppler spread
多普勒展宽
1.
A detailed analysis is made on the echo s Doppler spread and range spread caused by body target spread,and on their influence on ranging.
从理论上分析了由于体目标引起的引信回波信号的多普勒展宽和距离展宽问题,以及它们对近距离扩频测距的影响。
2.
The method can significantly reduce the Inter-Carrier Interference (ICI) and additive white Gaussian noise by processing the received pilots both in multipath spread domain and Doppler spread domain.
该算法对接收 的导频信号(Pilot)分别在多径展宽域和多普勒展宽域进行处理,显著地降低了子载波间干扰和高斯白噪声的影响。
3.
RTCE is based on forecasting the inherent vulnerabilities to propagation of HF time-varying channel, including multipath delay, Doppler spread, selective fading, interference, so this paper also introduces characteristics of HF channel in the beginning.
实时选频技术是基于对短波电离层时变信道固有的不利于电波传播的各种因素，包括信道的多径展宽、多普勒展宽、选择性衰落、噪声干扰等的预测的基础上实现的，所以在开篇对短波信道的特点进行了详细的介绍。
4) Doppler broadening
多普勒增宽，多普勒展宽
5) Doppler broadening measurements
多普勒增宽谱
1.
The defect properties in chemical vapor deposition diamond films doped by sulfur and boron were investigated by the Doppler broadening measurements and electron paramagnetic resonance (EPR).
利用多普勒增宽谱和电子顺磁共振研究了掺硼和掺硫金刚石薄膜的缺陷状态 。
6) Doppler broadening
多普勒谱线增宽
补充资料：空间谱带展宽
分子式：
CAS号：
性质：气相毛细管色谱中的一种现象，是引起色谱峰变形的主要原因之一。它所引起的色谱峰展宽程度与保留时间是成比例的，并导至峰的分裂，且重现性很差。在冷柱头进样中，引起空间谱带展宽主要有三方面原因：进样体积过大、样品的溶剂选择不当和洗提温度过高。只要采取相应措施如：进样体积少于2μl，选择的样品溶剂可以润湿固定相膜，柱温稍高于在载气进口压力下的溶剂沸点，则此现象是可以减免的。通常采取在入口处加一段没有涂层的保护柱来更好地消除此现象。
CAS号：
性质：气相毛细管色谱中的一种现象，是引起色谱峰变形的主要原因之一。它所引起的色谱峰展宽程度与保留时间是成比例的，并导至峰的分裂，且重现性很差。在冷柱头进样中，引起空间谱带展宽主要有三方面原因：进样体积过大、样品的溶剂选择不当和洗提温度过高。只要采取相应措施如：进样体积少于2μl，选择的样品溶剂可以润湿固定相膜，柱温稍高于在载气进口压力下的溶剂沸点，则此现象是可以减免的。通常采取在入口处加一段没有涂层的保护柱来更好地消除此现象。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条