Resonance scintillation counter

The fourth detector system is to use a resonance scintillation counter [57]. A standard type of plastic scintillator for /5-detection is doped with the resonant absorber. It is insensitive to the non-resonant background of primary... 

The Retina Foundation was a unique place in the late 1950s. The five-story, old tenement house was rebuilt and filled with the most modern biomedical research equipment available. We had analytical ultra-centrifuge, free electrophoresis machine, nuclear magnetic resonance machine, equipment to determine C-14 in the gas phase (before scintillation counters existed), electron microscope, tissue culture equipment with microcinematography, and a superb instrument shop to make new research tools. 

The remainder of this chapter is organized as follows. The next section describes some experimental and application investigations of in-beam Mossbauer spectroscopy using a Mn beam at the RIKEN RIBF. The system used for detecting Mossbauer 7-radiation in in-beam experiments is important. Nagatomo et al. [32] have recently developed a highly sensitive resonance counter based on parallel-plate avalanche and plastic scintillation counters. A new anticoincidence detection system is introduced. Finally, the experimental setup for online Mossbauer spectroscopy using the thermal neutron capture reaction, Fe (n, 7) Fe, and the results obtained are presented in the subsequent section. 

A gas-filled resonance counter had been set up, e.g., by installing enriched Fe stainless steel foils in a He gas chamber or parallel plate avalanche gas counter by Mullen and Stevenson (1978). An extremely Kght detector (K2Mg Fe(CN)e in Poly-Vinyl-Xylene scintillator) has also been developed for a movable resonance counter (Budakovski et aL 1999) to replace heavy... 

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