[14p-D209-1~5] 2.4 Accelerator Mass Spectrometry, Accelerator Beam Analysis

[14p-D209-1] Study on iodine isotope system on the earth environment 2

〇Hiroyuki Matsuzaki¹ (1.MALT, Tokyo Univ.)

Keywords:iodine isotope system, iodine 129, iodine dynamics

The sources of iodine-129 are the cosmic-ray interaction and the Uranium fission. The author presented in the previous lecture that the equilibrium isotopic ratio 129/127I could be possible to be 2.0E-13 in the ocean and 1.5E-12 in the crust simultaneously by dynamics simulation of iodine. This time the author improve the precision of the model and will examine in more details.