Butyl PBD

Butyl PBD or b-PBD is a fluorescent organic compound used in the Liquid Scintillator Neutrino Detector (LSND) at Los Alamos National Laboratory, USA.

The fluorescent emission of b-PBD is at λ_em = 364 nm for excitation at λ_ex = 305 nm (in ethanol solution). As a scintillant in the LSND, it was used at a concentration of 31 mg/l (87 µmol/l) dissolved in mineral oil.