Synchrotron radiation beamline to study radioactive materials at the Photon factory

Konishi, Hiroyuki; Yokoya, Akinari; Shiwaku, Hideaki; Motohashi, Haruhiko; Makita, Tomoko; Kashihara, Yasuharu; Hashimoto, Shinya; Harami, T.; Sasaki, Teikichi A.; Maeta, Hiroshi; Ohno, Hideo; Maezawa, H.; Asaoka, Seiji; Kanaya, Noriichi; Ito, Kenji; Usami, Noriko; Kobayashi, Kazuo

doi:10.1016/0168-9002(95)01241-9

Cited by 75 publications

(20 citation statements)

References 13 publications

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“…12,13) In this beamline, a doublecrystal monochromator was used to obtain monochromatic X-rays; the energy resolution (ΔE/E) was less than 0.1%. Monochromatic X-rays were extracted from the vacuum beamline into the atmosphere through a thin Kapton film (polyimide; Du Pont-Toray Co., Ltd., Chuo-ku, Tokyo, Japan).…”

Section: Irradiationmentioning

confidence: 99%

Low-dose Hypersensitivity in Nucleus-irradiated V79 Cells Studied with Synchrotron X-ray Microbeam

Maeda¹,

Usami²,

Kobayashi³

2008

JRR

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This study aims at elucidating the cellular responses induced by energy deposition in the cell nucleus or cytoplasm in the low-dose (< 1 Gy) region. We compared the survival fraction of V79 cells irradiated with X-ray microbeams of different sizes. Entire cells or cell nuclei were targeted with 5.35 keV monochromatic X-ray microbeams using a synchrotron radiation (SR) X-ray microbeam irradiation apparatus. Using a threshold of 30 cells/colony after 60 h of incubation, conditions that had been proven to give results equivalent to those of the conventional method, we determined the survival fraction of the microbeam-irradiated cells. When cell nuclei were irradiated with 10 x 10 microm (2) X-ray beams, the survival fraction was almost the same as that obtained with 50 x 50 microm (2) beams except in the low-dose region. In the low-dose region irradiated with 10 x 10 microm (2) beams, hyper-radiosensitivity (HRS) was clearly observed in the nucleus-irradiated cells, and the survival curve exhibited a minimum of about 60% at 0.5 Gy. This may be the most distinct HRS reported thus far when an asynchronous population is used. Difference in observed HRS phenomena is solely due to the irradiated part in the cell. These results suggest that energy deposition in the cytoplasm might suppress the HRS.

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Section: Irradiationmentioning

confidence: 99%

Low-dose Hypersensitivity in Nucleus-irradiated V79 Cells Studied with Synchrotron X-ray Microbeam

Maeda¹,

Usami²,

Kobayashi³

2008

JRR

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“…The samples were sealed off in a quartz cell under reduce pressure. XAFS measurements were carried out at BL27B beamline [11] of the Photon Factory in High Energy Accelerator Research Organization, Tsukuba, Japan. Details of the XAFS measurement of molten salt systems at the BL27B beamline are described in Ref.…”

Section: Experimental and Data Analysismentioning

confidence: 99%

High-temperature XAFS study of solid and molten SrCl2

Okamoto¹,

Yaita²,

Minato³

2004

Journal of Non-Crystalline Solids

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“…The XAFS measurements were performed at the BL27B beam line [30] at the Photon Factory in KEK, Japan. Hard X-rays ranging from 5-20 keV are available at this beam line with a Si(111) double-crystal monochromator.…”

Section: Xafs Measurement and Data Analysismentioning

confidence: 99%

An in-situ X-ray absorption spectroelectrochemical study of the electroreduction of uranium ions in HCl, HNO₃, and Na₂CO₃ solutions

et al. 2015

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Synchrotron radiation beamline to study radioactive materials at the Photon factory

Cited by 75 publications

References 13 publications

Low-dose Hypersensitivity in Nucleus-irradiated V79 Cells Studied with Synchrotron X-ray Microbeam

Low-dose Hypersensitivity in Nucleus-irradiated V79 Cells Studied with Synchrotron X-ray Microbeam

High-temperature XAFS study of solid and molten SrCl2

An in-situ X-ray absorption spectroelectrochemical study of the electroreduction of uranium ions in HCl, HNO₃, and Na₂CO₃ solutions

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Synchrotron radiation beamline to study radioactive materials at the Photon factory

Cited by 75 publications

References 13 publications

Low-dose Hypersensitivity in Nucleus-irradiated V79 Cells Studied with Synchrotron X-ray Microbeam

Low-dose Hypersensitivity in Nucleus-irradiated V79 Cells Studied with Synchrotron X-ray Microbeam

High-temperature XAFS study of solid and molten SrCl2

An in-situ X-ray absorption spectroelectrochemical study of the electroreduction of uranium ions in HCl, HNO3, and Na2CO3 solutions

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An in-situ X-ray absorption spectroelectrochemical study of the electroreduction of uranium ions in HCl, HNO₃, and Na₂CO₃ solutions