Temat: photon counting - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Time Correlated Single Photon Counting System for Optical Measurements
Autorzy:: Trybuła, A.
Domański, G.
Konarzewski, B.
Marzec, J.
Zaremba, K.
Kurjata, R.
Dziewiecki, M.
Smolnik, A.
Ziembicki, M.
Powiązania:: https://bibliotekanauki.pl/articles/226833.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: time correlated single photon counting
photomultiplier tube
optical techniques
Opis:: The high sensitivity time correlated single photon counting system (with photomultiplier tube) for biomedical measurements was designed and tested. Photon time of flight through a parafine wax phantom was modeled by Monte Carlo simulation and next measured by the device. Mean time delay introduced by a phantom is in a good agreement with simulation results. The results presented in this paper demonstrate the feasibility of measuring the optical response with the device.
Źródło:: International Journal of Electronics and Telecommunications; 2010, 56, 3; 301-306
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A time-domain pulse amplitude and width discrimination method for photon counting
Autorzy:: del Mar Correa, M.
Pérez, F. R.
Powiązania:: https://bibliotekanauki.pl/articles/220971.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: field-programmable gate array
time-to-digital converter
spectroscopy
photomultiplier
photon counting
discriminator
after-pulsing
low-voltage differential signalling
Opis:: This work shows a time-domain method for the discrimination and digitization of parameters of voltage pulses coming from optical detectors, taking into account the presence of electronic noise and afterpulsing. Our scheme is based on an FPGA-based time-to-digital converter as well as an adjustable-threshold comparator complemented with commercial elements. Here, the design, implementation and optimization of a multiphase TDC using delay lines shorter than a single clock period is also described. The performance of this signal processing system is discussed through the results from the statistical code density test, statistical distributions of measurements and information gathered from an optical detector. Unlike dual voltage threshold discriminators or constant-fraction discriminators, the proposed method uses amplitude and time information to define an adjustable discrimination window that enables the acquisition of spectra.
Źródło:: Metrology and Measurement Systems; 2018, 25, 2; 269-282
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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