[2P06-09] Behavior of Cs

[2P08] Cs chemical reaction with stainless steel under a LWR severe accident

(3)Evaluation of re-evaporation behavior of Cs adsorption compound by HAXPES

*Masaaki Kobata¹, Tetsuo Okane¹, Kunihisa Nakajima¹, Eriko Suzuki¹, keisuke kobayashi¹, Masahiko Osaka¹ (1. Japan Atomic Energy Agency)

Keywords:hard X-ray photoelectron spectroscopy, LWR severe accident, Chemical state, Cesium, re-evaporation

To Evaluate of re-evaporation behavior of Cs-Fe-Si-O compound formed by Cs chemisorpion on the stainless steel under severe accident, HAXPES analysis was performed on the re-heated samples under various atmospheres. As a result, it was found that the re-heated samples under a reducing atmosphere, were changed to a Cs-Si-O compound with Fe desorption.