磁聚焦法測定杭州地磁場強

應用物理學論文編號:WLX053  字數:9083,頁數:20
目  錄
中文摘要 i
英文摘要 ii
目錄 iii
第一章   緒論  1
 1.1  研究背景 1
 1.2  相關應用 1
第二章   磁聚焦理論及相關研究   2
 2.1  磁聚焦原理理論分析 2
 2.2  磁聚焦不確定因數相關研究 3
 2.2.1  螺旋線的起點位置不確定 3
2.2.2  聚焦時勵磁電流不確定 3
第三章  實驗測量 4
 3.1   實驗設計 4
 3.2   實驗具體步驟 7
 3.3   數據處理 8
 3.4   實驗備用方案 9
 3.4.1  方案一  幾何求值 9
 3.4.2  方案二  零場法 10
第四章  其他測量地磁場方法介紹 12
 4.1  用集成霍爾傳感器測量地磁場水平分量 12
 4.2  用自旋閥巨磁電阻傳感器測量地磁場 12
 4.3  用正切電流計原理測量地磁場水平分量 13
 4.4  高斯法和其改進法 13
第五章  結論 14
致謝 15
參考文獻 16

摘    要：

    隨著科技不斷發展，地磁場的研究越來越受人們重視，而如何準確地測量地磁場顯得十分重要。磁學是物理學中最為發展、內容最為豐富、理論最完備的學科之一。磁聚焦用來進行高精度的測量應用越來越廣泛。本論文從理論和實驗兩方面對用磁聚焦法測量地磁場強進行了分析和驗證。從地磁場的作用和研究背景、磁聚焦的原理和應用、以及不確定因素等幾方面進行了專門討論。并根據實驗室現有儀器設備設計并進行對杭州地磁場的測量。測量方法包括偏轉法和零場法。同時收集了一些其他測量地磁場的方法，得出了相對準確的相關數據。

關鍵詞：地磁場  測量  磁聚焦  電子比荷

Abstract
 With the development of science and technology, the study of the magnetic field is more and more attention by the people, and it is very important that how to measure exact. Physics is in the physics most develops, the content to be richest, one of theory most complete disciplines. Magnetic focusing for high-precision measurement is used more and more widely. In this paper, the method how to measure the magnetic field by the magnetic focusing has been studied both theoretically and experimentally. It is discussed from the effect and background of the magnetic field, the principle, application, and the uncertain factors of magnetic focusing. According to the existing laboratory equipment to design, then it measures magnetic field in Hangzhou. Measurement methods include the deflection and zero-field method. The paper also describes some other method that how to measure magnetic field, and gets a relatively accurate data.
 
Keywords: Geomagnetic field; Measure; Magnetic focusing method; Electron specific charge