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Journal Articles

RBPO$$_{5}$$(R=Ca, Sr)-based storage phosphors for neutron detection

Sakasai, Kaoru; Katagiri, Masaki; Matsubayashi, Masahito; Nakamura, Tatsuya; Kondo, Yasuhiro*

IEEE Transactions on Nuclear Science, 52(5), p.1856 - 1859, 2005/10

 Times Cited Count:9 Percentile:53.26(Engineering, Electrical & Electronic)

Storage characteristics of RBPO$$_{5}$$(R=Ca, Sr) based phosphors have been investigated for neutron detection. To increase the photostimulated luminescence (PSL) yields of CaBPO$$_{5}$$:Ce$$^{3+}$$ and SrBPO$$_{5}$$:Ce$$^{3+}$$ phosphors, fluorine atoms were introduced and the molar ratio of the fluorine atoms was optimized for the PSL yields. In addition, the authors found that the PSL yields of SrBPO$$_{5}$$:Eu$$^{2+}$$ phosphors were significantly increased by adding Li$$_{2}$$B$$_{4}$$O$$_{7}$$, though introducing fluorine and brome atoms in the phosphor was not effective for the PSL yields. These phosphors will be usable as new neutron storage phosphors with low $$gamma$$-ray sensitivity because they consist of light materials.

Journal Articles

Neutron storage characteristics of CaBPO$$_{5}$$:Ce$$^{3+}$$ based phosphors

Sakasai, Kaoru; Katagiri, Masaki; Matsubayashi, Masahito; Nakamura, Tatsuya; Kondo, Yasuhiro*

IEEE Transactions on Nuclear Science, 51(4), p.1712 - 1716, 2004/08

 Times Cited Count:9 Percentile:52.73(Engineering, Electrical & Electronic)

no abstracts in English

Journal Articles

Characteristics of SrBPO$$_{5}$$:Ce$$^{3+}$$ based materials as a neutron storage phosphor

Sakasai, Kaoru; Katagiri, Masaki; Matsubayashi, Masahito; Nakamura, Tatsuya; Kondo, Yasuhiro*

Nuclear Instruments and Methods in Physics Research A, 529(1-3), p.378 - 383, 2004/08

 Times Cited Count:15 Percentile:68.24(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Scintillation materials for neutron imaging detectors

Katagiri, Masaki; Sakasai, Kaoru; Matsubayashi, Masahito; Nakamura, Tatsuya; Kondo, Yasuhiro*; Chujo, Yoshiki*; Nanto, Hidehito*; Kojima, Takahiro*

Nuclear Instruments and Methods in Physics Research A, 529(1-3), p.274 - 279, 2004/08

 Times Cited Count:30 Percentile:86.01(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Organic scintillators containing $$^{10}$$B for neutron detectors

Kamaya, Eiki*; Matsumoto, Fukashi*; Kondo, Yasuhiro*; Chujo, Yoshiki*; Katagiri, Masaki

Nuclear Instruments and Methods in Physics Research A, 529(1-3), p.329 - 331, 2004/08

 Times Cited Count:12 Percentile:61.61(Instruments & Instrumentation)

no abstracts in English

Journal Articles

New photostimulable phosphors for neutron imaging

Sakasai, Kaoru; Katagiri, Masaki; Matsubayashi, Masahito; Nakamura, Tatsuya; Kondo, Yasuhiro*

Hoshasen, 29(4), p.189 - 197, 2003/10

no abstracts in English

Journal Articles

A SrBPO$$_{5}$$:Eu$$^{2+}$$ storage phosphor for neutron imaging

Sakasai, Kaoru; Katagiri, Masaki; To, Kentaro; Takahashi, Hiroyuki*; Nakazawa, Masaharu*; Kondo, Yasuhiro*

Applied Physics A, 74(Suppl.1), p.S1589 - S1591, 2002/12

 Times Cited Count:30 Percentile:71.85(Materials Science, Multidisciplinary)

A phosphor material such as SrBPO$$_{5}$$:Eu$$^{2+}$$ has been investigated for two-dimensional imaging for pulsed-neutron source. The authors found this phosphor itself shows photostimulated luminescence (PSL) by illumination of 635 nm laser light after neutron irradiation without adding any neutron sensitive materials such as Gd. The PSL intensity per neutron flux was proportional to E$$^{-0.5}$$, where E is neutron energy. The neutron sensitivity was increased by using enriched boron instead of natural boron. The S$$_{gamma}$$/S$$_{n}$$ ratio of this phosphor using enriched boron was better than that of a commercially available imaging plate, where S$$_{gamma}$$ and S$$_{n}$$ are gamma and neutron sensitivities, respectively.

Journal Articles

Characteristics of a SrBPO$$_{5}$$:Eu$$^{2+}$$ material as a neutron storage phosphor

Sakasai, Kaoru; Katagiri, Masaki; To, Kentaro; Takahashi, Hiroyuki*; Nakazawa, Masaharu*; Kondo, Yasuhiro*

2002 IEEE Nuclear Science Symposium Conference Record, Vol.1, p.455 - 459, 2002/00

Characteristics of a SrBPO$$_{5}$$:Eu$$^{2+}$$ material have been investigated as a neutron storage phosphor. The authors found this phosphor shows photostimulated luminescence by illumination with 635 nm laser light after neutron irradiation. The neutron sensitivity was proportional to E$$^{-0.5}$$, where E is neutron energy. The S$$_{gamma}$$/S$$_{n}$$ ratio of the phosphor using enriched boron was better than that of a commercially available imaging plate, where S$$_{gamma}$$/ and S$$_{n}$$ are the gamma and neutron sensitivities, respectively. A collimated neutron beam image was clearly obtained with the phosphor sample by scanning focused laser light on it.

Journal Articles

Characteristics of a SrBPO$$_{5}$$:Eu$$^{2+}$$ storage phosphor for neutron imaging

Sakasai, Kaoru; Katagiri, Masaki; To, Kentaro; Takahashi, Hiroyuki*; Nakazawa, Masaharu*; Kondo, Yasuhiro*

Denki Gakkai Genshiryoku Kenkyukai Shiryo (NE-01-8), p.41 - 46, 2001/09

A phosphor material such as SrBPO$$_{5}$$:Eu$$^{2+}$$ has been investigated for two-dimensional imaging for pulsed-neutron source. The authors found this phosphor itself shows photostimulated luminescence (PSL) by illumination of 635 nm laser light after neutron irradiation without adding any neutron sensitive materials such as Gd. The PSL intensity per neutron flux was proportional to E$$^{-0.5}$$, where E is neutron energy. The neutron sensitivity was increased by using enriched boron instead of natural boron. The S$$_{gamma}$$/S$$_{n}$$ ratio of this phosphor using enriched boron was better than that of a commercially available imaging plate, where S$$_{gamma}$$ and S$$_{n}$$ are gamma and neutron sensitivities, respectively.

9 (Records 1-9 displayed on this page)
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