[8p-N403-1~15] CS.1 Code-sharing Session of 2.3&7.4

3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)

[8p-N403-9] Background of ³⁶Cl-AMS at MALT, The University of Tokyo

〇Hiroyuki Matsuzaki¹, Takeyasu Yamagata¹, Miwako Toya¹, Hironori Tokuyama¹ (1.MALT Tokyo Univ.)

Keywords:

Accelerator Mass Spectrometry,Chlorine-36,background

Chlorine-36 (Half life = 3.01E+05 yrs) is used for the evaluation of the activation of cooling water of nuclear reactors, decoding of human nuclear activities recorded in ice cores, dating by in situ cosmogenic ³⁶Cl in carbonate samples, so on. Due to recent increasing demand for measurement of low ³⁶Cl/Cl ratio, the background of ³⁶Cl-AMS system at MALT, The University of Tokyo was evaluated, and its improvement has been tried.