accelerating voltage

accelerating voltage

The voltage applied to a source in mass spectrometry to move ions formed in the source into the instrument’s mass analyser. Accelerating voltage can range from less than 100 volts in quadrupole mass spectrometers, to several thousand volts in sector instruments or in time-of-flight mass spectrometers.
References in periodicals archive ?
The first is the accelerating voltage, or kV, that is applied to the electrons generated within the tube.
The first spectrum (Figure 27, left) was recorded with an accelerating voltage of 24 kV, typical for the detection of chromophoric elements in corundum (i.e.
In addition, earlier benchtop units were restricted to one accelerating voltage, thereby limiting resolution capability.
The accelerating voltage and emission current were 40 kV and 40 mA, respectively.
Accelerating voltage [U.sub.a] was regulated in the range of 0.5-5 kV by the power source 6.
The accelerating voltage, magnetic field intensity, and anode-collector distance control the beam energy density.
TEM measurement was performed on Tecnai G2 30 U-Twin system operating at an accelerating voltage of 200 kV.
The size and morphology of carbon nanotube were characterized with high resolution transmission electron microscopy (HRTEM) (JEOL JEM 2100) with an accelerating voltage of 200 kV.
Procedure for Copper Substrate Crystal Structure Comparison ION POLISHING PARAMETERS Manufacturer/model JEOL SM-09010 Ion accelerating voltage 5kV Current 100~140 [micro]A Gas Ar Polishing time 3 hr SEM PARAMETER Manufacturer/model JEOL JSM-7000F Accelerating voltage 15kV Magnification 5000 Sputtering None Tilt 0 degree
Similar cause and effect relations were obtained considering the effect of accelerating voltage [U.sub.a] and work-piece travel speed [V.sub.m] under the hardness.
The morphology and structural characterization were performed by means of transmission electron microscopy (TEM, JEM-200CX TEM, accelerating voltage of 200 kV), scanning electron microscopy (SEM, JEOL JSM-5610 LV SEM, accelerating voltage of 20 kV), and X-ray diffraction (XRD, D/Max-RA diftactometer, Cu K[alpha] radiation).