EFFECT OF SOLVENT AND SOLUTE STRUCTURE ON SCINTILLATOR PULSE HEIGHTS. I. CORRELATION OF PULSE HEIGHTS FOR RING SUBSTITUTED STYRENE PLASTIC SCINTILLATORS WITH HAMMETT SUBSTITUENT CONSTANTS

Journal Article · Wed Feb 01 04:00:00 EST 1961 · Journal of Chemical Physics (U.S.)

DOI:https://doi.org/10.1063/1.1700969· OSTI ID:4091874

Sandler, S R; Loshaek, S

A group of different ring substituted styrene plastic scintillators was prepared with a constant concentration of pterphenyl as the fluor and POPOP as the waveshifter. The effect of this variation in the structure of the polymer phase on pulse-height response to helial phagocyt and radiation was determined. It was found that correlations exist between the relative pulse height and the Hammett ( in rabbits; tr ) and Taft ( in rabbits; tr /sub I/) substituent constants for the substituted polystyrenes. Pulse heights increase with an increase in the negative value of the substituent constant, i.e., with an increase in the electron-donating power of the ring substituent on the polystyrene. It was found that markedly lower relative pulse heights were obtained for a series of styrene plastics in which the alpha -hydrogen in the backbone chain was substituted by a methyl group. This suggests that an alpha - hydrogen in the backbone chain is required for an efficient plastic solvent. (auth)

• Research Organization: Borden Chemical Co., Philadelphia
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-009103
• OSTI ID: 4091874
• Journal Information: Journal of Chemical Physics (U.S.), Journal Name: Journal of Chemical Physics (U.S.) Vol. Vol: 34; ISSN JCPSA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BETA PARTICLES
ENGINEERING AND EQUIPMENT
GAMMA RADIATION
HYDROGEN
METHYL RADICALS
ORGANIC COMPOUNDS
PERFORMANCE
POLYMERS
POLYPHENYLS
POLYSTYRENE
PULSES
SCINTILLATIONS
SOLUTIONS
SOLVENTS
STYRENE