Nguyên tử
Các bức xạ ion hoá
Giảng viên: Nguyễn Thái Hà
Bộ môn: Công nghệ ĐT và KTYS – Viện ĐT-VT
Cấu trúc vật chất
Nguyên tử
•Là đơn vị nhỏ nhất của một nguyên tố.
• Bao gồm một hạt nhân ở trung tâm và các
electron quay xung quanh
Hạt nhân nguyên tử
• Là phần trung tâm của nguyên tử.
• Bao gồm proton và neutron.
• Gồm hầu hết khối lượng của
nguyên tử.
Proton
•Là hạt mang điện tích dương.
Neutron
•Là hạt không mang điện.
Electron
• Là hạt mang điện tích âm.
• Nằm ở lớp bên ngoài, bao
quanh hạt nhân nguyên tử
• Số electron luôn cân bằng với
số hạt proton trong nhân
![Bài giảng An toàn bức xạ: Bảo vệ an toàn đối với chiếu xạ ngoài - TS. Nguyễn Thái Hà [Chuẩn nhất]](https://cdn.tailieu.vn/images/document/thumbnail/2026/20260506/camtucau2026/135x160/80481778236374.jpg)
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