NDLI: Performance of a liquid scintillator containing a zirconium β-keto ester complex developed for the ZICOS experiment

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Performance of a liquid scintillator containing a zirconium β-keto ester complex developed for the ZICOS experiment

Content Provider	Semantic Scholar
Author	Fukuda, Yoshiki Narengerile Obata, Akira Moriyama, Shigetaka Ogawa, Izumi Gunji, Takahiro Tsukada, Satoru Hayami, Ryohei
Copyright Year	2014
Abstract	A liquid scintillator containing a zirconium β-keto ester complex has been developed for the ZIrconium Complex in Organic Scintillator (ZICOS) neutrinoless double beta decay experiment. We are aiming to develop a detector which has a good energy resolution (4% at 2.5 MeV), a large light yield (60% that of BC505) and a low background rate (0.1 counts/tonne・year) with several tonnes of Zr isotope, so we have investigated the zirconium β-keto ester complexes tetrakis (isopropyl acetoacetato) zirconium and tetrakis (ethyl acetoacetato) zirconium, which have high solubility (over 10 wt.%) in anisole. We measured the performance of liquid scintillators containing these zirconium β-keto ester complexes and obtained 40% of the light yield of BC505 and energy resolution of 4.1% at 2.5 MeV assuming 40% photo coverage of the photomultiplier in the ZICOS detector. Thus we almost achieved our initial goal. Preliminary investigations indicate that tetrakis (diethyl malonato) zirconium will give us no quenching of the light yield and an energy resolution of 2.9% at 2.5 MeV. This will be a suitable complex for the ZICOS experiment, if it has a large solubility.
Starting Page	109
Ending Page	117
Page Count	9
File Format	PDF HTM / HTML
Volume Number	49
Alternate Webpage(s)	https://core.ac.uk/download/pdf/51495879.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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