New high energy radiation detector device. Final report on Phase 1

Technical Report · Thu Nov 01 04:00:00 EST 1990

OSTI ID:6978859

Harrah, L A; Stoller, H M

Researchers synthesized three low molecular weight (LMW) polysilylene structures, determined the relationship between six polysilylene structures and their spectra, quantified the fluorescence quantum yields for the six structures, and designed and used instrumentation for the conduct of ionizing radiation experiments. LMW structures demonstrated both low ionization potential and high quantum yield. One high molecular weight (HMW) structure demonstrated a quantum yield of 0.76, approaching that of the best organic fluor, with an indicated decay time of 0.21 ns, a factor of 7 faster than organic fluors. These results confirm the potential of polysilylenes for time-resolved, high resolution scintillators. Materials issues were identified which require resolution to optimize the performance of an all-polysilylene scintillator. LMW synthesis efforts formed electronically absorbing complexes with alcohols and simple aromatic compounds resulting in significant quenching. A linear liquid, very low molecular weight polysilylene is required as host to eliminate the overlap of fluorescence wavelength with the HMW fluors.

• Research Organization: TPL, Inc., Newport Beach, CA (United States)
• OSTI ID: 6978859
• Report Number(s): PB-94-174802/XAB; TLP-FR--2003-1; CNN: NSF-ISI8960019
• Country of Publication: United States
• Language: English

Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DETECTION
GAMMA DETECTION
MEASURING INSTRUMENTS
PERFORMANCE TESTING
PHOSPHORS
PLASTIC SCINTILLATORS
RADIATION DETECTION
RADIATION DETECTORS
SYNTHESIS
TESTING
X-RAY DETECTION