BASIC STUDY ON A PSEUDO TREND PHENOMENON OF THE FEYNMAN-α ANALYSIS WITH BUNCHING METHOD Sin-ya Hohara, Atsushi Sakon, Tomohiro Endo, Tadafumi Sano, Kunihiro Nakajima, Kazuki Takahashi and Kengo Hashimoto EPJ Web Conf., 247 (2021) 09008 Published online: 22 February 2021 DOI: 10.1051/epjconf/202124709008