FLUORESCENCE DECAY TIME MEASUREMENTS OF ORGANIC SCINTILLATORS
S>The time dependence of the fluorescence emission from scintillators is measured for a number of commonly used organic scintillators under alpha-particle and gamma-ray excitation. A sampling oscilloscope is used to record the pulses obtained from a fast scintillation counter. Using such a system, a gating arrangement can be employed that permits selection of only those scintillation events that deliver a predetermined total charge output from the photomultiplier. Noise within the sampling unit limits the measurements to the main fast components in the fluorescence emission. All of the plastic scintillators exhibit decay times between 2.1 and 4.4 nsec. Stilbene exhibits particle type'' discriminating characteristics with a strong second component in the decay (--35 nsec) appearing under alphaparticle excitation. In addition to the main component in the decay of anthracene, evidence of two shorter components is also found. For all the scintillators tested, the alpha-particle induced scintillation has a slightly longer decay time than the corresponding gamma-ray induced scintillation. (auth)
- Research Organization:
- Univ. of Saskatchewan, Saskatoon, Can.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-029507
- OSTI ID:
- 4802973
- Journal Information:
- Canadian Journal of Physics, Journal Name: Canadian Journal of Physics Journal Issue: 8 Vol. 40; ISSN 0008-4204
- Publisher:
- Canadian Science Publishing
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
INVESTIGATION OF THE DECAY PROPERTIES OF ORGANIC SCINTILLATORS STIMULATED BY $gamma$ RAYS, PROTONS, OR /cap alpha/ PARTICLES
A SCINTILLATION COUNTER WITH NEUTRON AND GAMMA-RAY DISCRIMINATORS