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研究生:陳浩瑋
研究生(外文):Chen Hao-wei
論文名稱:游離輻射與空氣層之核作用
指導教授:鍾堅鍾堅引用關係
學位類別:碩士
校院名稱:國立清華大學
系所名稱:原子科學系
學門:工程學門
學類:核子工程學類
論文種類:學術論文
畢業學年度:92
語文別:中文
論文頁數:85
中文關鍵詞:游離輻射游離輻射與空氣層之核作用
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本論文首先對輻射與放射性現象、核反應物理、瞬間核爆效應及核爆衍生的電磁脈衝現象作通盤性簡介。及針對核彈彈心材料的籌獲與核武器彈心的組合詳加說明。

  其次,先就核爆電磁脈衝源項的中子輻射、加馬射線及X-射線的特質作一概述,並以實驗去驗證源項的能量、強度與角分佈。源項經實驗建構數據庫後,用以估算在不同當量下原子彈、氫彈及中子彈空炸時噴出源項的大小,作為計算電磁脈衝時作為輸入項。核爆電磁脈衝模式係建構在MATLAB程式語言上,模式包含輸入程式、計算程式及輸出程式,計算程式主要係編寫核爆源項與空氣層的作用,衍生核爆電磁脈衝,輸出程式則推算電磁脈衝的強度、範圍、時序,以及對無線(微波)通訊干擾的強弱。將其用於不同當量及彈種戰備核武,去選取平流層內不同炸高對地產生電磁脈衝的衝擊並預判其最適化。以提供有關單位去執行相應的電磁脈衝防護措施及損害評估。

模式示範計算是以1962年7月8日,美國於太平洋約翰斯頓島(150 N ,1650 W)的高空核試驗,作為本NEMP模式的驗證,該例是以1450kT氫彈在400km高空處爆炸。
Firstly, this thesis focus on the overall introduction to the electromagnetic pulsing phenomenon generated from radiation, nuclear physic, and the effect of sudden nuclear exploration. Besides, it explains the obtainment and modules of the materials of nuclear bomb’s core.

Secondly, I will introduce the characteristics of neutron radiation, r-ray, and X-ray of electromagnetic pulsing source generated from nuclear exploration and verify the energy, strength, and angle’s distribution of source by experiments. After setting up the database from experiments, the magnitude of source from air exploration of different equivalent atomic, hydrogen, and neutron bombs will be used as the input item to calculate electromagnetic pulse. The model of electromagnetic pulsing source generated from nuclear exploration was built on MATLAB program language, including input, calculate, and output parts. The calculate part was designed to simulate the interaction between nuclear exploration and atmosphere and electromagnetic pulsing source generated from nuclear exploration. The output part was designed to estimate the strength, range, and time of electromagnetic pulses, and the degree of interference to radio-communication. Therefore, the model will provide the pre-judgments and optimization of the impacts of electromagnetic pulses from the different nuclear exploration’s height in stratosphere on land, according to the application on different equivalent nuclear weapons. The concerned authorities could execute the protection system and assess the damage from electromagnetic pulses.

The exploration of 1kT atomic bomb at 50km and different angles, including 0o、45o、85o,was chosen as the demo calculation of model. According to different ionizing energy between 0.0006-15 MeV, the model will calculate the generation and disappearance time ,the strength of electric field, and electronic density of electromagnetic pulses in different atmosphere.
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