2026-04-14T21:08:35Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/899 2021-12-13T00:41:58Z 1582963739756:1582967025340 user-um

A new scanning system for alpha decay events as calibration sources for range-energy relation in nuclear emulsion Yoshida, J. Kinbara, S. Mishina, A. Nakazawa, K. Myint Kyaw Soe Aye Moh Moh Theint Khin Than Tint A new scanning system named “Vertex picker” has been developed to rapid collect alpha decay events, which are calibration sources for the range-energy relation in nuclear emulsion. A computer-controlled optical microscope scans emulsion layers exhaustively, and a high-speed and high-resolution camera takes their micrographs. A dedicated image processing picks out vertex-like shapes. Practical operations of alpha decay search were demonstrated by emulsion sheets of the KEK-PS E373 experiment. Alpha decays of nearly 28 events were detected in eye-check work on a PC monitor per hour. This yield is nearly 20 times more effective than that by the conventional eye-scan method. The speed and quality is acceptable for the coming new experiment, J-PARC E07. 2017 http://hdl.handle.net/20.500.12678/0000000899 https://meral.edu.mm/records/899