beta spectrum

The results showed that marked changes took place on the curve of XRD after Fe50B50 and Fe60B40 were milled.

用QM—4H行星式球磨机机械合金化Fe—B二元粉末,研究了机械合金化过程中粉末结构的变化,结果表明,Fe_(50)和Fe_(60)B_(40)经机械球磨后,其X射线衍射谱线发生显著变化。

This paper mostly discusses a kind of new type electric refrigeration semiconductor detector that measures X-ray, and its application in X-ray spectrum analysis.

介绍了一种测量X射线的Si-PIN电制冷半导体探测器,以及它在X射线谱分析中的应用。

We investigate the X-ray spectrum of two-temperature accretion disk and consider the effects of thermal electron and positron pair production upon the structure and spectrum of accretion disk.

这种盘的光子辐射谱是幂律的与一些天体 X射线谱的观测相似。

The resulti show that, for stronger X-ray spectrum (15 keV Planck spectrum), Compton scattercan cause the depositional energy and the peak pressur of X-ray shock wave to decrease, in LY-12 aluminium, the disagreement aE(x) /E(x) range from 9 % to 22 %, △Pm(x) /Pm(x) is about 12 %.

计算结果表明，对较硬的X射线谱（15heVPlanck谱），康普顿散射造成能量沉积与热击波峰压明显下降，在LY－12铝中，能量沉积的相对差△E（X）／E（X）可达9％～22％，热击波峰压的相对差△Pm（X）／Pm（X）约为12％。

The effective near fields, which are introduced to replace the actual near fields in the traditional Plane wave spectrum-surface integration echnique,are calculated efficiently by extracting effective spectral rays only This method is validated by computing far fields of radom.

根据天线远区场对口径波谱的局部依赖特性，引入有效近场的概念，提出一种面向远场计算的波谱射线方法。

energy dispersive X-ray spectrometer

能量扩散X射线谱仪

high resolution gamma-ray spectrometer

高分辨伽马射线谱仪

nondiffraction X-ray spectrometer

非衍射x射线光谱仪

X-ray diffraction pattern computer

X射线衍射图谱计算机

cathode-ray spectroradiometer

阴极射线光谱辐射计

X-ray fluorescent emission spectrometer

X射线荧光发射光谱仪

wave resolution of X-ray spectrum

Ｘ射线光谱波长分辨率

x ray fluorescence spectroscopy

x 射线荧光光谱分析

fluorescent X - ray spectroscopy

荧光x-射线光谱分析

multi-channel X-ray fluorescence spectrometer

多道Ｘ射线荧光光谱仪

four crystal X-ray spectrometer

四晶体x射线光谱仪

neutron-capture gamma-ray spectroscopy

中子俘获γ射线光谱学

X-ray absorption spectrometer

X射线吸收式光谱仪

x ray spectrometry

x 射线光谱分析法

proton excited X-ray spectrometry

质子激发Ｘ射线光谱法

X-ray energy dispersive spectrometr

x-射线能量分散谱仪

X-ray photo-electron spectrometer (XPS)

X射线光电子能谱仪

double crystal X-ray spectrometer

双晶体x射线光谱计