Year: 2023
Type: article
Abstract: Pulse pile-up in pulse-height energy analyzers increases when the incident rate of pulses increases relative to the inverse of the dead time per pulse of the detection system. Changes in the observed energy distributions with incident rate and detector-electronics-formed pulse shape then occur. We focus on weak high energy tails in X-ray spectra, important for measurements on partially ionized, warm (50–500 eV average electron energy), pure hydrogen plasma. A first-principles two-photon pulse-pile-up model is derived specific to trapezoidal-shaped pulses; quantitative agreement is found between the measurements and the model’s predictions. The model is then used to diagnose pulse-pile-up tail artifacts and mitigate them in relatively low count-rate spectra.
Source: Plasma
Institutions: Princeton University, Princeton Plasma Physics Laboratory
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,335
Awards: G1912174983, G4896746546, G498139845, G516483051, G663282964, G7393748781, G8301091518, PRINCETON SATELLITE SYSTEMS, INC., DBA PRINCETON FUSION SYSTEMS - NEW AWARD
CONTROL NUMBER: 1858-1828
PROJECT TITLE: NOVEL RF PLASMA HEATING FOR LOW-RADIOACTIVITY COMPACT FUSION DEVICES
THIS COOPERATIVE AGREEMENT IS HEREBY AWARDED TO PRINCETON FUSION SYSTEMS TO DEVELOP A NEXT-GENERATION MACHINE CAPABLE OF DEMONSTRATING REACTOR-LEVEL ION HEATING AND CONFINEMENT IN THE REACTOR CONCEPT KNOWN AS THE PRINCETON FIELD-REVERSED-CONFIGURATION (PFRC)., G969889393
OpenAlex ID: W4319081601