Photon/Particle Counting Image Measurement System : PIAS-TI

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The PIAS-TI is an extremely sensitive image measurement device developed for imaging and quantification in ultimate levels with an extremely small number of photons, electrons and charged particles. In the case of light measurement, for example, the PIAS-TI can detect individual photons to obtain an image at ultimate levels in darkness that could not be observed even on ultra-high sensitivity video cameras. The PIAS-TI is also capable of performing quantitative analysis by counting the detected photons. In addition, selecting the appropriate detection device realizes detection and imaging of electrons and charged particles. Since the detection device is composed of a PSD (position sensitive detector) and a MCP, counting measurement is not affected by the scan TV rate.

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FEATURES
Ultra high sensitivity.
High spatial resolution of 50 um FWHM (20 lp / mm).
High dynamic range(35,000 : 1) and high S/N close to the theoretical limit.
Gate operation possible (optional).
Reduced noise through energy discrimination (user programmable).
Wide variety of detecting devices from X-Ray to near IR

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APPLICATIONS
1-d or 2-d spectrophotometry of extremely low level emissions or fluorescence.
Energy spectrum analysis of charged particles.
Radiation and particle physics experiments.
Micro-beam analysis.
Proving tests in theoretical physics.

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APPLICATION EXAMPLE
Example of an experiment in light interference at photon- counting level.
After 10 seconds

After 10 minutes

The purpose of the test is to show the interference properties of a single photon. For this reason, the equipment is so organized that only one photon at a time enters a double slit, thus preventing interference between photons. The picture to the right clearly show interference.

CONFIGURATION OF EXPERIMENTAL SETUP

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OPERATING PRINCIPAL
As the light quantity gradually decreases, it eventually reaches the point where individual particles (photons) are observed with a definite energy level. Thus, a change in the quantity of light means the number of photons has changed.
At such a low light level (photon counting region), it is difficult to detect light as an analog value. Instead, a method which counts photons is more effective. An example of a light detector using this method is a photon counter using a photomultiplier tube. The PIAS-TI is a measuring system that makes use of the technology of the photon counter to detect the input positions of individual photons or particles, and accumulate them to create an image.

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SPECIFICATIONS

* Varies depending on ambient environment

If you have comments or are requesting any information, please contact export@sys.hpk.co.jp(PIAS).