CHAPTER 9 New Developments in X-ray Sensitive Liquid

A summary of the liquid scintillators developed at EGG/EM SBO is presented. Among the characteristics presented are the emission spectra and efficiency values. All of the scintillation solutions mentioned herein have the potential for sensitivity enhancement to X-rays. One such successful red-emitting solution is L-735A-1 01 which shows a severalfold enhancement for a sample thickness of 6 mm, excited by 17-keV X-rays. Other compounds containing heavy atoms such as tetramethylgermanium, tetraethyllead, and tetramethyllead were tested for possible heavy-atom quenching effects using high-energy electrons from a linac. The germanium compound showed no quenching effects, but both lead compounds exhibited considerable quenching of the fluorescence