[9a-E204-1~9] 2.2 Radiation generators, Detector development, Measurement technology

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)

[9a-E204-8] Improving accuracy of measured effective atomic number and electron density for 3d transition metals measured with photon counting CT

〇Takumi Kishi¹, Kazushi Hoshi¹, Yuki Furuta¹, Masami Torikoshi², Hiroshi Sakurai¹ (1.Gunma Univ, 2.QST)

Keywords:

radiation,Photon Counting CT

This study investigates a high-precision, non-destructive method using photon counting CT (PCCT) to measure the effective atomic number (Z) and electron density (ρ_e) of 3d transition metals, which are common in social infrastructure materials. While measurements for Ti, Fe, and other metals generally matched NIST data, they showed a decreasing trend at higher energies. Analysis using constants from standard samples yielded a variance of about 5%. Simulations revealed that when the ratio of measured to theoretical values depends on the sample, it impacts measurement accuracy.