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The development of fast liquid scintillators for fiber optic applications
International Conferenceon Liquid Scintillation Countin9 T H E D E V E L O P M E N T OF FAST L I Q U I D SCINTILLATORS FOR F I B E R O P T I C APPLICATIONS P. B. Lyons, Los Alamos Scientific Laboratory,
University of California, Los Alamos, New Mexico 87545, S. Lutz, and L. A. Franks, EG&G, Santa Barbara, California 93017. The optical attenuation and time dispersion in optical fibers decrease significantly with increasing wavelength. We report here efforts to develop organic solution scintillators optimized for fibers in application where maximum bandwidth at transmission length to 0.6 km are required. Ternary and quaternary liquids employing rhodamine-B, tetraphenylbutadiene or Kiton Red as final solutes are reported with emissions beyond 550 nm and decay times (1) as short as 900 psec. Quaternary solid plastic systems using rhodamine dyes as final solutes are reported with decay times to 3.3 ns. The efficiencies of the various scintillators are compared with a commercially available plastic scintillator. In addition, the results of the preliminary testing of liquid systems using Nile Blue Perchlorate will be presented together with the results of quenching studies. Dose rate linearity results to rates in excess of 10" rad/sec will be discussed.
SEVERAL H I G H YIELD F L U O R E S C E N T COMPOUNDS THAT ARE L I Q U I D AT ROOM TEMPERATURE S. Gershuni, M. Rabinovitz, I. Agranat, Department
of Organic Chemistry, Hebrew University of Jerusalem, and I. B. Berlman, The Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem, Israel. The melting points of the basic chromophores, anthracene and p-terphenyl,haye been decreased by the addition of alkyl and vinyl substitue~ts in the proper substitutional positions. These structural modifications have been made without impairing the favorable fluorescence properties of the parent chromophore. Some of the desirable characteristics that accompany these charges are: a dramatic increase in solubility of these compounds in aromatic solvents, and a greater immunity to self-quenching and quenching by high Z atoms. The spectroscopic characteristics that have been measured are reported herein.
NOVEL PRIMARY SOLUTES FOR L I Q U I D SCINTILLATION COUNTING Hans GListen and Werner Seitz, Kernforschungszentrum Karlsruhe, Institut fiir Radiochemie, 7500 Karlsruhe, Post[ach 3640, Federal Republic of Germany Although 1,3,5-triaryl-2-pyrazolines were checked as solutes in liquid and plastic scintillation counting some twenty years ago, their use fell into oblivion.
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University of California, Los Alamos, New Mexico 87545, S. Lutz, and L. A. Franks, EG&G, Santa Barbara, California 93017. The optical attenuation and time dispersion in optical fibers decrease significantly with increasing wavelength. We report here efforts to develop organic solution scintillators optimized for fibers in application where maximum bandwidth at transmission length to 0.6 km are required. Ternary and quaternary liquids employing rhodamine-B, tetraphenylbutadiene or Kiton Red as final solutes are reported with emissions beyond 550 nm and decay times (1) as short as 900 psec. Quaternary solid plastic systems using rhodamine dyes as final solutes are reported with decay times to 3.3 ns. The efficiencies of the various scintillators are compared with a commercially available plastic scintillator. In addition, the results of the preliminary testing of liquid systems using Nile Blue Perchlorate will be presented together with the results of quenching studies. Dose rate linearity results to rates in excess of 10" rad/sec will be discussed.
SEVERAL H I G H YIELD F L U O R E S C E N T COMPOUNDS THAT ARE L I Q U I D AT ROOM TEMPERATURE S. Gershuni, M. Rabinovitz, I. Agranat, Department
of Organic Chemistry, Hebrew University of Jerusalem, and I. B. Berlman, The Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem, Israel. The melting points of the basic chromophores, anthracene and p-terphenyl,haye been decreased by the addition of alkyl and vinyl substitue~ts in the proper substitutional positions. These structural modifications have been made without impairing the favorable fluorescence properties of the parent chromophore. Some of the desirable characteristics that accompany these charges are: a dramatic increase in solubility of these compounds in aromatic solvents, and a greater immunity to self-quenching and quenching by high Z atoms. The spectroscopic characteristics that have been measured are reported herein.
NOVEL PRIMARY SOLUTES FOR L I Q U I D SCINTILLATION COUNTING Hans GListen and Werner Seitz, Kernforschungszentrum Karlsruhe, Institut fiir Radiochemie, 7500 Karlsruhe, Post[ach 3640, Federal Republic of Germany Although 1,3,5-triaryl-2-pyrazolines were checked as solutes in liquid and plastic scintillation counting some twenty years ago, their use fell into oblivion.
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