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(R=Ca, Sr)-based storage phosphors for neutron detectionSakasai, 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：53.1(Engineering, Electrical & Electronic)Storage characteristics of RBPO(R=Ca, Sr) based phosphors have been investigated for neutron detection. To increase the photostimulated luminescence (PSL) yields of CaBPO:Ce
and SrBPO:Ce 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:Eu
phosphors were significantly increased by adding Li
B
O
, 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 
-ray sensitivity because they consist of light materials.
:Eu photostimulabe phosphorsSakasai, Kaoru; Katagiri, Masaki; Nakamura, Tatsuya
JAERI-Research 2004-019, 33 Pages, 2004/12
JAERI-Research-2004-019.pdf:7.99MB
As a new candidate for raw materials of a neutron imaging plate, characteristics of a SrBPO:Eu phosphor that has boron (B) in the base matrix as a neutron converter have been investigated. The phosphor has a strong merit that it generates photostimulated luminescence of 390 nm by illumination of red laser light after neutron irradiation. The emission and excitation wavelengths were the same as those of commercially available neutron imaging plate. Therefore, the authors have fabricated neutron imaging plates by painting the phosphor on Al plates. Neutron imaging experiments using the fabricated imaging plates were carried out with a commercially available image reader. A Li block was used as a camera subject in the experiments. As a result of the experiments, it was confirmed that the neutron image was clearly obtained, though the intensity of the image was not so high. The position resolution of 0.2 mm was obtained when the readout resolution of 50 
m in the reader was used.
Sakasai, Kaoru; Katagiri, Masaki; Matsubayashi, Masahito; Nakamura, Tatsuya; Kondo, Yasuhiro*
Hoshasen, 29(4), p.189 - 197, 2003/10
no abstracts in English
:Eu storage phosphor for neutron imagingSakasai, 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：71.77(Materials Science, Multidisciplinary)A phosphor material such as SrBPO:Eu 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
, where E is neutron energy. The neutron sensitivity was increased by using enriched boron instead of natural boron. The S
/S
ratio of this phosphor using enriched boron was better than that of a commercially available imaging plate, where S and S are gamma and neutron sensitivities, respectively.
:Eu material as a neutron storage phosphorSakasai, 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:Eu 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, where E is neutron energy. The S/S ratio of the phosphor using enriched boron was better than that of a commercially available imaging plate, where S/ and S 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.
:Eu storage phosphor for neutron imagingSakasai, 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:Eu 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, where E is neutron energy. The neutron sensitivity was increased by using enriched boron instead of natural boron. The S/S ratio of this phosphor using enriched boron was better than that of a commercially available imaging plate, where S and S are gamma and neutron sensitivities, respectively.
:Eu phosphor for neutron imagingSakasai, Kaoru; Katagiri, Masaki; To, Kentaro; Nakamura, Tatsuya; Takahashi, Hiroyuki*; Nakazawa, Masaharu*
JAERI-Conf 2001-002, p.639 - 644, 2001/03
no abstracts in English
