High-Sensitive Radiation Measurement for Radioactive Waste

该项目旨在调查被称为Amang的工业废物的影响，这是一种被称为副产品的物质，包括马来西亚锡矿的放射性元素，可能会给附近居民带来人类风险。为了精确测量材料，我们开发了一个高灵敏度的锗nai反符合伽马射线测量系统。通过这种方法，我们测量了亚芒的放射性活动，此外，还测量了居住地区和马来半岛广大地区的环境辐射强度，即巴特沃斯-怡保-吉隆坡-柔佛山沿线。还测量了从德岛取样的岩石的环境辐射，并与Amang强度进行了比较，以讨论对人类风险的影响。虽然观察到阿曼的放射性相当高，但沉积阿曼的辐射可能不会那么大。下一阶段，应研究放射性物质向环境（如水、土壤等）的洗脱。

This project is intended to investigate effects of industrial waste that is called Amang and known as by-product material including radioactive elements from tin mines in Malaysia and may cause trouble in human risk of inhabitants nearby. For precise measurement of the material we have developed a highly sensitive Ge-NaI anti-coincidence gamma-ray measurement system. By means of this, we have measure the radio-activities of Amang and, in addition, environmental radiation intensities of inhabit area and wide area of Malay Peninsula, I.e. along a route of Butterworth-Ipoh-Kuala Lumpur-Johor Bahru. The environmental radiation from rocks sampled in Tokushima has been also measured and compared with the Amang intensities to discuss the effects to human risks. Although the radioactivity of Amang has been observed to be rather high, the irradiation due to deposited Amang may not be so large. For the next stage, it should be studied elution of radioactive substances to environment (such as water, soil, and so on).