Title of article
Plutonium isotopes derived from Nagasaki atomic bomb in the sediment of Nishiyama reservoir at Nagasaki, Japan
Author/Authors
Y. Saito-Kokubu، نويسنده , , F. Esaka، نويسنده , , K. Yasuda، نويسنده , , M. Magara، نويسنده , , Y. Miyamoto، نويسنده , , S. Sakurai، نويسنده , , S. Usuda، نويسنده , , H. Yamazaki، نويسنده , , S. Yoshikawa، نويسنده , , S. Nagaoka، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
4
From page
465
To page
468
Abstract
The source of plutonium in sediments deposited at Nishiyama reservoir at Nagasaki was characterized by their 240Pu/239Pu atom ratio. The average ratio was approximately 0.03, except in two layers. The main source of the plutonium was the Nagasaki atomic bomb. The plutonium continues to flow into the reservoir even now. The 240Pu/239Pu atom ratios in two layers were higher than the average, which showed that plutonium in these layers were made of those of nuclear tests added to those of the atomic bomb.
Keywords
sediment , plutonium , Nagasaki , Isotopic ratio , Atomic bomb
Journal title
Applied Radiation and Isotopes
Serial Year
2007
Journal title
Applied Radiation and Isotopes
Record number
548196
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