Quenching of benzene fluorescence in pulsed proton irradiation: Dependence on proton energy

Journal Article · Thu Sep 15 04:00:00 EDT 1977 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.435196· OSTI ID:7300550

Miller, J H; West, M L

Dilute solutions of benzene in cyclohexane were irradiated with subnanosecond pulses of protons from a 2 MV accelerator. Changes in the time resolved emission at 285 nm were studied as a function of proton energy. The initial rate of fluorescence decay is energy dependent and always greater than that observed with ultraviolet radiation. As time after irradiation increases, the decay rate approaches the uv value. A model based upon quenching by transient species in the proton track is used to analyze the data. The analysis suggests that the energy dependence of the initial decay rate results from the effect of proton stopping power on the initial quencher concentration.

• Research Organization: Battelle Northwest Laboratory, Richland, Washington 99352
• OSTI ID: 7300550
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 67:6; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
AROMATICS
BEAMS
BENZENE
CHEMICAL RADIATION EFFECTS
CHEMISTRY
ENERGY DEPENDENCE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUORESCENCE
HEAT TREATMENTS
HYDROCARBONS
LUMINESCENCE
NUCLEON BEAMS
ORGANIC COMPOUNDS
PARTICLE BEAMS
PROTON BEAMS
QUENCHING
RADIATION CHEMISTRY
RADIATION EFFECTS
STOPPING POWER