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							Takahisa Ohnuki
														
									Department of Monozukuri Engineering, Tokyo Metropolitan College of Industrial Technology
							 
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							Kazuya Asoo
														
									Graduate Student, Graduate School of Science and Engineering, Ibaraki University
							 
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							Yo Tomota
														
									Graduate School of Science and Engineering/Frontier Research Center for Applied Atomic Science, Ibaraki University
							 
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							Stefanus Harjo
														
									Materials and Life Science Facility Center, Japan Atomic Energy Agency