microprobe

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microprobe

[′mī·krə‚prōb]
(spectroscopy)
An instrument for chemical microanalysis of a sample, in which a beam of electrons is focused on an area less than a micrometer in diameter, and the characteristic x-rays emitted as a result are dispersed and analyzed in a crystal spectrometer to provide a qualitative and quantitative evaluation of chemical composition. Also known as x-ray microprobe.
References in periodicals archive ?
In contrast, ion microprobes use focused beams of ions (charged atoms) to bombard a sample.
The red TDR curve shows the response of a microprobe launch into a 50 [ohm] stripline which has been optimized.
(One of us, RBM, remembers visiting Kurt in 1964 at the old NBS site on Van Ness Street where he sat in front of a brand new ARL electron microprobe collecting data.) Kurt later became Chief of the Microanalysis Section, a position that he held for many years until 1980 when he became Chief of the Office of International Relations.
Important to the quality of the measurements are the transition integrity from the microprobe tip to the microstrip bond pad and the calibration precision.
The list of options includes a motorized wafer stage, mechanical microprobes, electrical feed-through, and a tilt stage.
Scientists in chemistry, biology, and the environmental sciences should also find many uses for x-ray microprobes. "This represents a big jump, from a millimeter to a micrometer source," says research team member Eric Isaacs.
All previous attempts to measure the distribution of elements within bivalve shells have been made with either PIXE microprobes or electron probe microanalysis (EPMA).
Until now, coaxial on-wafer measurement systems stopped at 62.5 GHz, even though V-connector (1.85 mm) microprobes had reached 65 GHz.
PacketPortal s unprecedented approach to data collection uses PacketPortal-enabled microprobes to collect packets throughout the network, including the edge, examines them at full-duplex line-rates, encapsulates them into a detailed results packet for insertion back into the network for routing without affecting network performance.
The SFM is only one example in a broad category of scanning microprobes. In general terms, a scanning microprobe is an instrument that maps a spatially varying surface property onto an image.
JEOL streamlines the imaging and analytical workflow between the optical microscope and the SEM or microprobe, allowing the user to quickly pinpoint precise regions of interest on a sample for viewing at ultra-high magnifications.
JEOL streamlines the imaging and analytical workflow between the optical microscope and the scanning electron microscope (SEM) or microprobe, allowing users to pinpoint regions of interest on a sample for viewing at high magnifications.