Electron Spin Resonance (ESR) Experiment
Electron Spin Resonance (ESR) Experiment Customer Case A customer has an Electronic Spin Resonance (ESR) experiment. ESR is based on the fact that the magnetic moment of an electron precesses in an applied magnetic field, not unlike a child's top in a gravitational field, at a well-defined frequency called the Larmor frequency. Electromagnetic radiation at the Larmor frequency, when impinging on such an electron, will be preferentially absorbed. This principle is identical to that employed in Nuclear Magnetic Resonance (NMR), where the atomic nucleus precesses. In NMR, Larmor frequencies are of order 100 MHz. Because the electron is 2000 [...]
Get More Out Of Your Military & Aerospace Applications
When testing the electrical systems for your military and aerospace applications, you need to ensure they are ready for the job and meet all the necessary standards. These specialized systems work to keep the highly sophisticated and advanced technology housed in these applications running at full strength, which requires the right amount of power to do their jobs effectively. Having the right electrical safety and performance testing equipment on hand can help determine the overall effectiveness of your applications. […]
Nuclear Ion Testing
Nuclear Ion Testing Customer Case This customer is involved in nuclear ion testing. The pulse amplitudes of nuclear ions from a detector must be measured and sorted into a histogram, which will show the number of times a given amplitude was received. The customer wants a "multi-channel analyzer" capable of analyzing 4,000 to 8,000 "channels." In the customer's terminology, "channels" are actually histogram bins. The customer has pulses coming in at 20 - 30 ms minimum interval and needs to peak detect (calculate the maximum value of the pulse). Then, based on peak height, each is stored in a [...]
Capacitance Sensing vs. Strain Gauge Sensing Application Note
Capacitance Sensing vs. Strain Gauge Sensing Application Note Capacitance probes that are embedded in piezo flexure stages can provide significantly greater accuracy than strain gauges. Although some minor mounting modifications are required, capacitance probes with picoscale positioning provide higher linearity, greater long-term stability, and better direct measurement. Capacitance sensors cost more, however, and are limited by sensing distance. Therefore, strain gauge sensors remain a good choice for applications where cost is a consideration, sensing distances are larger, and high resolution or high accuracy are required. In a recent application note, MTI Instruments examines the differences between capacitance probes and [...]
Alpha Particle Counting
Alpha Particle Counting Customer Case A customer has to characterize a new design for a solid state alpha particle detector. The detector is essentially a silicon diode with a large area face. Because alpha particles, which are high-speed helium nuclei, are electrically charged, they interact strongly with matter and lose their energy quickly upon entering a solid. When an alpha particle decelerates within the depletion region of the diode, it creates electron-hole pairs. The carriers are collected by the diode's electrodes and create a measurable current pulse. The customer's experimental solid state detector has two implanted electrodes whose signals [...]
White Paper: Hipot Testing of Military/Aerospace Interconnect Components
Introduction Operational performance and safety are paramount concerns when determining the acceptability of a range of interconnection products in military and aerospace applications. Connectors and relays, wires, wire bundled into cables and harnesses, all must be tested against stringent standards. The number and range of these standards is mind-numbing — and this paper makes no attempt to catalog them all. Rather, notable and salient MIL standards and similar aerospace standards will be used to site the key role that high-performance electrical safety testers, ancillary equipment and software play in effecting reliable and cost-effective compliance testing of components as [...]
Webinar Recap: Vitrek Products for Metrology and Calibration Labs
Metrology requires equipment capable of precise measurements and accurate readings. Taking the time to ensure that the instruments you use remain properly calibrated requires the right tools and training to ensure that they are in good working order. In our webinar: Vitrek Products for Metrology and Calibration Labs, we cover why you need the right calibration tools and why Vitrek offers the best high voltage tester options on the market in the form of our 4700 High Voltage Meter, PA920 Power Analyzer, and 2000MN Calibrator. […]
Laser Spectroscopy
Laser Spectroscopy Customer Case An academic researcher is studying the attenuation properties of different materials inside Laser cavities for applications in Laser Spectroscopy. The Laser pulses are generated by one Laser, and are then transmitted by mirrors into another cavity filled with gaseous material. In the second cavity, the light pulses are continuously reflected by opposite mirrors and their intensities are measured by a transducer which converts them into decaying pulses of 30 nanosecond width. The decay takes about 40 microseconds to settle. The researcher is required to capture the decaying pulses and save the captured data onto the [...]
Using Capacitance Sensors for Non-Conductive Material Measurement GalleryUsing Capacitance Sensors for Non-Conductive Material Measurement
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Using Capacitance Sensors for Non-Conductive Material Measurement
Non-Conductive Material Measurement with Capacitance Sensors Capacitance sensors are non-contact devices that can be used to obtain position, thickness, and dynamic measurements with a high degree of precision, accuracy, and resolution. Capacitive measurement is used with electrically-conductive materials such as metals but can also be used to measure non-conductive materials such as glass, sapphire, and many plastics. Even if a non-conductive material is relatively inexpensive (such as closed cell foam), manufacturers want to avoid errors that can result in significant waste across high volumes. Importantly, capacitance measurement is also used with semi-insulating materials such as gallium arsenide (GaAs) and [...]
Laser Transient Absorption Spectroscopy
Laser Transient Absorption Spectroscopy Customer Case The customer's setup is a scientific application in which transient signals from a Laser Absorption Spectroscope are transferred to a computer. The laser power is modified in steps and the process is repeated. The measurement sensitivity is limited by noise generated by the current digitizer. The customer wants to capture and continuously average very small pulse responses. The lowest signal pulse height is 0.5 milliVolts and can range up to 2 mV. The duration of each response pulse is 1 to 10 microseconds. The Pulse Repetition Frequency (PRF) is 10 Hz. The customer's [...]