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SUMMARY:Energy-Transfer Mechanisms in Nd-Containing Perovskite Quantum-Dot
  Liquid Scintillators for Rare Nuclear Process Detection
DTSTART;VALUE=DATE-TIME:20261030T164500Z
DTEND;VALUE=DATE-TIME:20261030T170000Z
DTSTAMP;VALUE=DATE-TIME:20261023T153026Z
UID:indico-contribution-6387@cern.ch
DESCRIPTION:Speakers: Vasily Kornoukhov (NRNU MEPhI)\nWe investigate Nd-co
 ntaining mixed-halide perovskite quantum dots in organic liquids as candid
 ate scintillation media for rare nuclear processes. Photoluminescence meas
 urements have been completed for twelve compositions based on pseudocumene
 \, dodecane\, and syntin\, with varying 2\,5-diphenyloxazole (PPO) and nap
 hthalene content. Comparative data analysis is ongoing.\nIn the analyzed p
 seudocumene dilution series\, emission maxima lie at 501.5–505.5 nm. Add
 ing PPO at 2 g/L does not enhance quantum-dot emission under the optical e
 xcitation conditions studied. Relative suppression increases with dilution
 \, reaching 48.8% in peak intensity and 35.3% in integrated band intensity
  at a nominal 1:30 dilution compared with the corresponding sample without
  PPO. Steady-state spectra alone cannot distinguish absorption losses from
  changes in energy transfer and nonradiative decay.\nFurther absorption an
 d fluorescence-decay measurements are planned to examine energy transfer b
 etween the solvent\, organic additives\, and quantum dots. Scintillation p
 erformance will be assessed independently using ¹³⁷Cs\, with relative 
 light yield evaluated from the Compton edge near 477 keV in a fixed geomet
 ry\, accounting for photodetector spectral sensitivity.\nThe detector conc
 ept combines neodymium incorporation and scintillation in the same active 
 volume. Potential applications\, subject to scintillation and stability va
 lidation\, include detectors for ¹⁵⁰Nd double-beta-decay studies\, ne
 utrino experiments\, and gamma-ray spectroscopy.\nKeywords: liquid scintil
 lator\; perovskite quantum dots\; neodymium\; energy transfer\; photolumin
 escence\; double-beta decay\; gamma-ray detection.\n\nhttps://indico.parti
 cle.mephi.ru/event/626/contributions/6387/
LOCATION:Sevastopol Hotel
URL:https://indico.particle.mephi.ru/event/626/contributions/6387/
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