TABLE OF CONTENTS
Organic
Scintillators
Donald L. Horrocks, Editor
Proceedings of the International
Symposium on Organic Scintillators
Argonne National
Laboratory, June 20-22, 1966
PREFACE ...................................................................................................................... v
THEORY AND
MECHANISMS 1. ENERGY TRANSFER
The Scintillation Efficiency of Benzene
P Skarstad, R Ma and
On the Vacuum Ultraviolet Excited Luminescence of
Pure and Doped Polystyrene
A Weinreb and M Leibowitz .......................................................................................... 15
Solvent-Solvent Energy Migration in Liquid
Scintillators. Part II
J W van Loben Sels and J T Dubois .............................................................................. 33
Measurement of Transfer Efficiencies and Radiative
Transfer of
Aromatic Solvents at Very Low Solute
Concentrations
Donald L Horrocks ...................................................................................................... 45
On the Excited Cyclohexane Molecule as a Possible
Excitation
Donor in Luminescence Processes
M
THEORY AND
MECHANISMS 2. QUENCHING STUDIES
Fluorescence Quenching and External Spin-Orbit
Coupling Effects
A Kearvell and F Wilkinson .......................................................................................... 69
Energy, Transfer and Quenching in Plastic
Scintillators
F Hirayama, L J Basile and C Kikuchi ........................................................................... 83
The Validity of Perrin's Equation in Solute Quenching
C T Peng .................................................................................................................. 109
THEORY AND
MECHANISMS 3. LIFETIME STUDIES
The Luminescence Decay of Organic Scintillators
G Laustriat ............................................................................................................... 127
Fluorescence Decay of Liquid Scintillator Systems
After High-Energy Excitation
P K Ludwig ............................................................................................................... 147
Factors Relevant to a Short Lifetime of an Aromatic
Molecule: Empirical Data
I B Berlman .............................................................................................................. 157
Quenching Measurements on Organic Scintillators
E
A Yates, D G Crandall and J Kirkbride ...................................................................... 165
THEORY AND
MECHANISMS 4. TRIPLET, EXCITON AND OTHER
STUDIES
Pathways of Triplet-Triplet Annihilation in Ethanolic
Solutions of Pyrene
B Stevens and M I Ban............................................................................................... 173
Charge-transfer Exciton State, Ionic Energy Levels,
and
Delayed Fluorescence in Anthracene
M Pope ......................................................................................................................183
Temperature Dependence of Sensitized Fluorescence in
Naphthalene Crystals
A Hammer and H C Wolf ........................................................................................... 191
The Fluorescence Decay Times of the Two
Davydov-Components
in Naphthalene Crystals
T B El Kareh and H C Wolf ......................................................................................... 195
Migration of Triplet Excitons in Molten Naphthalene
B Baessler ................................................................................................................ 201
Liquid Scintillators at High Temperatures
M Furst, H Kallmann and
Delayed Luminescence of Organic Mixed Crystals IV.
Triplet-Triplet Annihilation Phenomena
M Kinoshita and S P McGlynn .................................................................................... 231
Quantum Efficiencies of Triplet Formation in Aromatic
Molecules
M W Windsor and W R
APPLICATIONS
Sensitivity Enhancement for Low Level Activities by
Complete
Syntheses of Liquid Scintillation Solvents
M A Tamers .............................................................................................................. 261
Triplet Sampled Radiation Damage
S Z Weisz, P Richardson, A Cobas and R C
Jarnagin .................................................... 277
New Liquid Scintillators with Faster Response and
Higher Efficiency
F J Lynch ................................................................................................................. 293
Plastic Scintillators from Cross-Linked Epoxy Resins
F
OTHER RECENT ADVANCES
On the Correlations Between Constitution and
Scintillation
Properties in the p-Oligophenylene Series
H O Wirth, F U Herrmann, G Herrmann and
W Kern ................................................... 321
Liquid Scintillators. XIV. The Synthesis and
Evaluation of Some
trans-1,2-Diarylethylenes as Liquid Scintillators.
The
Steric Effects of a Methyl Group
G H Daub, F N Hayes, D
The Fluorescence and Scintillation Properties of New
Oxazoles,
Oxadiazoles and Pyrazolines
P Leggate and D Owen ............................................................................................. 357
Scintillation Measurements at Very High Solute
Concentrations;
Self Quenching-Structure Correlations
D L Horrocks and H O Wirth ...................................................................................... 375
A Study of the Quenching Properties of Alcohols in
Liquid Scintillator Solutions
A F Findeis and J A Lubkowitz .................................................................................... 385
Performance Parameters of Some New Efficient and
Highly
Soluble Solutes for Liquid Scintillators
E Kowalski, R Anliker
and K Schmid ........................................................................... 403