Vol.1 No.1, 2002 Contents

	Paper
	Specification of Radiation Field Generated by a Gamma-ray Source Keiji Oda, et al.
	Measurement of the Spatial Distribution of Neutrons in an Accelerator Room by the Combination of Activation Detectors and an Imaging Plate Kazuyoshi Masumoto, et al.
	High Density 60 Hz Magnetic Field Has No Effects on Mutagenicity and Growth of the Budding Yeast Saccharomyces cerevisiae Kikuo Shimizu, et al.
	A Method for Determining the Individual Counting Efficiency for Thyroid 125I Monitoring Systems Hiroshi Yamashita, et al.