1) radio frequency quadrupole mass spectrometer
射频四极矩质谱计
2) quadrupole mass spectrometer
四极质谱计
1.
Application of quadrupole mass spectrometer in vacuum leak detection;
四极质谱计在真空检漏中的应用
2.
3He analyses were performed by a quadrupole mass spectrometer (QMS).
在自行设计的全金属高真空热解吸系统上,以ELITESPE50型四极质谱计(QMS)为分析器,建立了金属氚化物中3He的热解吸和数据处理方法。
3.
The quadrupole mass spectrometer is an instrument for partial pressure measurement.
四极质谱计是一种分压力测量仪器,其线性上限一般为10-3Pa。
3) QMS
四极质谱计
1.
5 mm;a QMS was cooperated with a helium leak detector for high vacuum leak detection;a sniffer with a vacuum cover-helium leak detector set was developed for pressured vessels detection and some vacuum pumping sets suitable for pumping huge water vapor were developed also.
5mm;对大容器真空检漏,采用四极质谱计和氦质谱检漏仪相配合的检漏法;对压力容器检漏,开发了真空罩吸枪-氦质谱检漏系统,还研制了适于抽除大量水汽的检漏真空机组。
2.
The problems of the upper limit of the measuring range for the Quadrupole Mass Spectrometer (QMS) and the measure error due to the background pressure in the ion source are usually face to during plasma diagnosis by QMS.
四极质谱计用于等离子体诊断时常常面临质谱计工作上限问题和四极质谱计离子源所产生的本底组分分压强导致测量结果有较大误差的问题 ;为使四极质谱分析能作为等离子体诊断的常规手段 ,必须拓展四极质谱计测量上限和分析离子源产生的附加本底的特点并加以扣除 ,确保作为等离子体诊断时的测量精
3.
A calibration and application study system of QMS has been designed and built in Tsinghua University in order to support the QMS development of our domestic instrumental and application studies.
为了满足对四极质谱计定量分析的需求,建立了一台四极质谱计校准与应用研究系统。
4) analytical quadrupole mass spectrometer
分析四极质谱计
5) quadruple monopole mass spectrometer
四单极质谱计
6) quadrupole mass spectrometer
四极质谱
1.
Low-noise and wide-band design of composite preamplifier in quadrupole mass spectrometer;
四极质谱检测中复合放大器的低噪声高带宽设计
2.
Two samples of a set of national standard water samples which have natural level ratio of D and H are set as standards and the other two as unknown samples,a linear calibration method with equal H2+ is studied on GAM400 quadrupole mass spectrometer.
以氘丰度为天然水平的国家一级标准水样中的两个样品作为标准,另外两个样品作为测试样品,在GAM400四极质谱计上探索了等氢分子离子H2+线性校正测量值的方法。
3.
In the paper,hydrocarbon types of gas_oil have been analyzed by a quadrupole mass spectrometer according to the requirements of ASTM D2786 and ASTM D3239.
应用四极质谱仪按ＡＳＴＭＤ２７８６和ＡＳＴＭＤ３２３９分析方法要求对重馏分油的烃类组成进行分析。
补充资料：四极质谱计
分子式：
CAS号：
性质：用四根平行极杆组成可变电场作为质量分析器的质谱计，两组相对极杆上施加极性相反的直流电压U和射频电压Vcosωt，在四极杆间形成可变电场。通过电场扫描，不同质荷比，m/z的离子顺序依次通过电场区到达接收器，获得质谱。四极质谱计属无磁式动态低分辨质谱仪器，分辨率在1000～2000范围。
CAS号：
性质：用四根平行极杆组成可变电场作为质量分析器的质谱计，两组相对极杆上施加极性相反的直流电压U和射频电压Vcosωt，在四极杆间形成可变电场。通过电场扫描，不同质荷比，m/z的离子顺序依次通过电场区到达接收器，获得质谱。四极质谱计属无磁式动态低分辨质谱仪器，分辨率在1000～2000范围。
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