CeBr 3 scintillator

Details CeBr 3 scintillator CeBr 3 scintillator

2008-07-29

2008-07-29

Porta, David P. (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

C252S30140H, C252S30140R

Reexamination Certificate

active

07405404

ABSTRACT:
The present invention provides a new scintillator, cerium bromide (CeBr3), for gamma ray spectroscopy. Crystals of this scintillator have been grown using the Bridgman process. In CeBr3, Ce3+is an intrinsic constituent as well as a luminescence center for the scintillation process. The crystals have high light output (˜68,000 photons/MeV) and fast decay constant (˜17 ns). Furthermore, it shows excellent energy resolution for γ-ray detection. For example, energy resolution of <4% (FWHM) has been achieved using this scintillator for 662 keV photons (137Cs source) at room temperature. High timing resolution (<200 ps-FWHM) has been recorded with CeBr3-PMT and BaF2-PMT detectors operating in coincidence using 511 keV positron annihilation γ-ray pairs.

REFERENCES:
patent: 492722 (1893-02-01), Gibson
patent: 3247377 (1966-04-01), Hall, Jr.
patent: 4510394 (1985-04-01), Allemand et al.
patent: 4870667 (1989-09-01), Brunnett et al.
patent: 4980552 (1990-12-01), Cho et al.
patent: 5015861 (1991-05-01), Derenzo et al.
patent: 5039858 (1991-08-01), Anderson et al.
patent: 5134293 (1992-07-01), Anderson et al.
patent: 5272344 (1993-12-01), Williams
patent: 5319203 (1994-06-01), Anderson et al.
patent: 5453623 (1995-09-01), Wong et al.
patent: 6362479 (2002-03-01), Andreaco et al.
patent: 6479420 (2002-11-01), Nakamura
patent: 6624420 (2003-09-01), Chai et al.
patent: 6720561 (2004-04-01), Baumgartner et al.
patent: 6787250 (2004-09-01), Shibuya et al.
patent: 7129494 (2006-10-01), Shah
patent: 7173247 (2007-02-01), Shah
patent: 2004/0149917 (2004-08-01), Dorenbos et al.
patent: 2005/0082484 (2005-04-01), Srivastava et al.
patent: WO 01/60945 (2001-08-01), None
Bollinger and Thomas, “Measurement of the Time Dependence of Scintillation Intensity by a Delayed-Coincidence Method,”Rev. Sci. Instr. 32:1044-1050 (1961).
Derenzo and Moses, “Experimental Efforts and Results in Finding New Heavy Scintillators,”Heavy Scintillators for Scientific and Industrial Applications, F. De Notaristefani et al. eds., Gif-sur-Yvette, France: Editions Frontieres, pp. 125-135 (1993).
Derenzo, “Measurements of the Intrinsic Rise Times of Common Inorganic Scintillators,”IEEE Trans. Nucl. Sci., NS47:860-864 (2000).
Derenzo et al., “The Quest for the Ideal Scintillator,”Nucl. Inst. Meth. Physics Res. A505:111-117 (2003).
Dorenbos et al., “Non-Proportionality in the Scintillation Response and the Energy Resolution Obtainable With Scintillation Crystals,”IEEE Trans. Nucl. Sci.42:2190-2202 (1995).
Guillot-Noel et al., “Scintillation Properties of RbGd2Br7:Ce Advantages and Limitations,”IEEE Trans. Nucl. Sci46:1274-1284 (1999).
Moses et al., “Scintillation Mechanisms in Cerium Fluoride,”J. Luminescence59:89-100 (1994).
Moses et al., “Properties for TIme-of-Flight PET Using LSO Scintillator,”IEEE Trans. Nucl. Sci.46:474-478 (1999).
Moses, “Current Trends in Scintillator Detectors and Materials,”Nucl. Inst. Meth.A-487:123-128 (2002).
van Eijk, “New Scintillators, New Light Sensors, New Applications,”Proc. Int. Conf. Inorganic Scintill. Appl., pp. 3-12, Shanghai, China (1998).
van Loef et al., “High Energy resolution Scintillator: Ce3+Activated LaBr3”,Appl. Phys. Lett.79:1573-1575 (2001).
van Loef et al., “Scintillation Properties of LaBr3:Ce3+Crystals: Fast, Efficient and High-Energy-Resolution Scintillators,”Nucl. Instr. Meth. Physics Res. A486:254-258 (2002).

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