powerpoint su hinh thanh tang dien ly
TRANSCRIPT
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Tầng điện ly
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• Nhưng các phân tử-nguyên tử trung hòa về điện thì không hình thành nên tầng điện ly. Vì tầng điện ly cần có các hạt mang điện(plasma)
• Vậy cơ chế nào để thể hình thành các ion?
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Ion hóa các phân tử bởi bức xạ mặt trời
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Phản ứng quang phân
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Mô hình phản ứng ion hóa
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Ionsphere
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• Lớp D `ion hóa mức độ thấp để yếu và hấp thụ các tín hiệu tần số vô tuyến thấp thường dưới 4 MHz
• Lớp E `ion hóa mức độ trung bình và có thể phản ánh tần số lên đến 15 MHz nhưng có thể bị ion hóa cao do vụ nổ năng lượng mặt trời của bức xạ (lẻ tẻ E) cho phép tần số lên đến 146 MHz được phản ánh trở lại trái đất.
• Layers mức độ ion hóa F1 và F2 là cao và có thể phản ánh tần số từ 1,8 MHz đến 50 MHz hop bằng cách sử dụng Layer F2 có thể lên đến 4000 Kms. Những lớp này kết hợp và mất ion hóa vào ban đêm.
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Sự phân bố điện tử điển hình trong tầng điện ly
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3+ eeee 3+ ee +
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