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Analysis of External Surface Irregularities on Fukushima-Derived Fallout Particles

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Analysis of External Surface Irregularities on Fukushima-Derived Fallout Particles. / Martin, Peter; Satou, Yukihiko; Griffiths, Ian; Richards, David; Scott, Tom.

In: Frontiers in Energy Research, Vol. 5, 25, 22.09.2017.

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Martin, Peter ; Satou, Yukihiko ; Griffiths, Ian ; Richards, David ; Scott, Tom. / Analysis of External Surface Irregularities on Fukushima-Derived Fallout Particles. In: Frontiers in Energy Research. 2017 ; Vol. 5.

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@article{1131bd96b6a547af8d622741a916a780,
title = "Analysis of External Surface Irregularities on Fukushima-Derived Fallout Particles",
abstract = "Three large high radioactivity particulate fragments, each several hundred micron in diameter, have been recovered from the region immediately surrounding the Fukushima Daiichi Nuclear Power Plant. Through the application of high-resolution electron and ion-beam methods, this work has sought to investigate the structure and composition of this fibrous surface morphology. By evaluating this, a potential material source can be determined, alongside important information relating to the conditions / events at the time of the reactor explosions and catastrophic release of radioactive materials.The results of this study show that the fibrous features associated with these large radiocesium-containing particles share a common elemental composition. With respect to the surrounding particle, the fibres are enriched in Si, Cl and Fe, whilst depleted in both Zn and Al. Based on composition, these fibres are ascribed to thermal insulating material used within the plant, which was sufficiently heated during the Loss of coolant incident (LOCI) at the plant to be incorporated into the molten ejecta material that rapidly solidified upon quenching in air. Elemental analysis of these fibres does not reveal any evidence of leaching or the presence of actinide materials.",
keywords = "FDNPP, Fukushima, Nuclear, fallout, radiation, Nuclear energy, Nuclear forensics, contamination",
author = "Peter Martin and Yukihiko Satou and Ian Griffiths and David Richards and Tom Scott",
year = "2017",
month = "9",
day = "22",
doi = "10.3389/fenrg.2017.00025",
language = "English",
volume = "5",
journal = "Frontiers in Energy Research",
issn = "2296-598X",
publisher = "Frontiers Media S.A.",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Analysis of External Surface Irregularities on Fukushima-Derived Fallout Particles

AU - Martin, Peter

AU - Satou, Yukihiko

AU - Griffiths, Ian

AU - Richards, David

AU - Scott, Tom

PY - 2017/9/22

Y1 - 2017/9/22

N2 - Three large high radioactivity particulate fragments, each several hundred micron in diameter, have been recovered from the region immediately surrounding the Fukushima Daiichi Nuclear Power Plant. Through the application of high-resolution electron and ion-beam methods, this work has sought to investigate the structure and composition of this fibrous surface morphology. By evaluating this, a potential material source can be determined, alongside important information relating to the conditions / events at the time of the reactor explosions and catastrophic release of radioactive materials.The results of this study show that the fibrous features associated with these large radiocesium-containing particles share a common elemental composition. With respect to the surrounding particle, the fibres are enriched in Si, Cl and Fe, whilst depleted in both Zn and Al. Based on composition, these fibres are ascribed to thermal insulating material used within the plant, which was sufficiently heated during the Loss of coolant incident (LOCI) at the plant to be incorporated into the molten ejecta material that rapidly solidified upon quenching in air. Elemental analysis of these fibres does not reveal any evidence of leaching or the presence of actinide materials.

AB - Three large high radioactivity particulate fragments, each several hundred micron in diameter, have been recovered from the region immediately surrounding the Fukushima Daiichi Nuclear Power Plant. Through the application of high-resolution electron and ion-beam methods, this work has sought to investigate the structure and composition of this fibrous surface morphology. By evaluating this, a potential material source can be determined, alongside important information relating to the conditions / events at the time of the reactor explosions and catastrophic release of radioactive materials.The results of this study show that the fibrous features associated with these large radiocesium-containing particles share a common elemental composition. With respect to the surrounding particle, the fibres are enriched in Si, Cl and Fe, whilst depleted in both Zn and Al. Based on composition, these fibres are ascribed to thermal insulating material used within the plant, which was sufficiently heated during the Loss of coolant incident (LOCI) at the plant to be incorporated into the molten ejecta material that rapidly solidified upon quenching in air. Elemental analysis of these fibres does not reveal any evidence of leaching or the presence of actinide materials.

KW - FDNPP

KW - Fukushima

KW - Nuclear

KW - fallout

KW - radiation

KW - Nuclear energy

KW - Nuclear forensics

KW - contamination

U2 - 10.3389/fenrg.2017.00025

DO - 10.3389/fenrg.2017.00025

M3 - Article

VL - 5

JO - Frontiers in Energy Research

JF - Frontiers in Energy Research

SN - 2296-598X

M1 - 25

ER -