We developed a broad-spectrum light source specifically designed to reproduce the temporal behavior of the optical pulses emitted by scintillators for X-ray detection. Nanosecond-to-millisecond pulses are generated through a fast circuit driving Light Emitting Diodes (LEDs) and are endowed with the peculiar time features of the most employed scintillators by means of a dedicated pulse shaping stage. We implement the light source for the optical modeling of the single-shot X-ray coherence measurements with near-field speckles generated by the scattering from colloidal suspensions (heterodyne near field speckle method). Moreover, we derive a rigorous scaling law that quantitatively relates visible and X-ray signal-to-noise ratios.
Note: Nanosecond LED-based source for optical modeling of scintillators illuminated by partially coherent X-ray radiation / M. Siano, B. Paroli, E. Chiadroni, M. Ferrario, and M. A. C. Potenza. - In: REVIEW OF SCIENTIFIC INSTRUMENTS. - ISSN 0034-6748. - 87:12(2016 Dec), pp. 126104.1-126104.3.
|Titolo:||Note: Nanosecond LED-based source for optical modeling of scintillators illuminated by partially coherent X-ray radiation|
SIANO, MIRKO (Primo)
PAROLI, BRUNO (Secondo)
POTENZA, MARCO ALBERTO CARLO (Ultimo)
|Parole Chiave:||X-rays, Speckles|
|Settore Scientifico Disciplinare:||Settore FIS/03 - Fisica della Materia|
|Data di pubblicazione:||dic-2016|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1063/1.4972891|
|Appare nelle tipologie:||01 - Articolo su periodico|