氢质子弛豫过程
孙淑琴, 林君, 张庆文, 嵇艳鞠
吉林大学 智能仪器与测控技术研究所, 吉林 长春 130026
THE INVESTIGATION OF HYDROGEN MACROSCOPIC NUCLEAR RELAXATION
SUN Shu-qin, LIN Jun, ZHANG Qing-wen, JI Yan-ju
Jilin University Institute of Intelligent Measurement and Cotrol Technology, Changchun 130026, China
摘要 论述了原子核系统磁化强度的的弛豫原理,分析了含水地层中氢质子磁化强度的弛豫过程,推导出磁化强度的布洛赫方程,从而给出接受线圈中感应电动势的衰减规律,通过计算得到磁化强度各分量随时间的衰减过程以及感应电动势的衰减曲线,分析了纵向弛豫和横向弛豫时间常数与磁化强度各分量和感应电动势的关系。
关键词 :
探地雷达 ,
地下病害 ,
干扰区 ,
金属管线 ,
空洞
Abstract :The relaxation principle of the atomic nucleus system magnetization is discussed in this paper. Relaxation of hydrogen macroscopic nuclear magnetization is analyzed, Bloch equation of nuclear magnetization is given, free induction decay in receiving coil is presented, and relaxation about components of the nuclear magnetization and free induction decay is computed. In addition, the relationship of nuclear magnetization and free induction decay to the longitudinal and transverse time constants is analyzed.
Key words :
GPR
underground disease
interference region
metal pipeline
cavity
收稿日期: 2003-11-28
出版日期: 2005-04-24
作者简介 : 孙淑琴(1970-),女,吉林大学智能仪器与测控技术研究所在读博士。研究方向:核磁共振找水仪器研制及正反演理论研究。
引用本文:
孙淑琴, 林君, 张庆文, 嵇艳鞠. 氢质子弛豫过程[J]. 物探与化探, 2005, 29(2): 153-156,160.
SUN Shu-qin, LIN Jun, ZHANG Qing-wen, JI Yan-ju. THE INVESTIGATION OF HYDROGEN MACROSCOPIC NUCLEAR RELAXATION. Geophysical and Geochemical Exploration, 2005, 29(2): 153-156,160.
链接本文:
https://www.wutanyuhuatan.com/CN/
或
https://www.wutanyuhuatan.com/CN/Y2005/V29/I2/153
[1] 陈文生.核磁共振地球物理仪器原理[M].北京:地质出版社, 2000.
[2] 潘玉玲, 张昌达.地面核磁共振找水理论和方法[M].武汉:中国地质大学出版社, 2000.
[3] Goldman M, Rabinovich B, Rabinovich M, et al.Application of the integrated NMR-TDEM method in groundwater exploration in Israel[J].Joural of Applied Geophysics, 1994, 31:27-52.
[4] Schirov M, Legchenko A.A new direct non-invasive groundwater detection technology for Australia [J].Exploration Geophysics, 1991, 22:333-338.
[5] 张建中, 孙存普.磁共振教程[M].合肥:中国科学技术大学出版社, 1996.
[6] Legchenko A V, Shushakov O A. Inversion of surface NMR data[J].Geophysics, 1998, 63(1):75-84.
[7] 张志涌.精通Matlab 5.3版[M].北京:北京航空航天大学出版社, 2000.
[8] 潘玉玲, 万乐, 袁照令, 等.核磁共振找水方法的现状和发展趋势[J].地质科技情报, 2000, 19(1):105-108.
[9] 袁照令, 潘玉玲, 万乐, 等.核磁共振找水方法的应用效果[J]. 地球科学—中国地质大学学报, 2000, 25(2):132.
[10] 万乐, 潘玉玲, 袁照令, 等.地面核磁共振感应系统(NUMIS)及其在找水中的应用[J]. 物探与化探, 1999, 23(5):330-334.
Viewed
Full text
Abstract
Cited
Shared
Discussed