An HTS dc SQUID system in competition with induction coils for TEM applications

被引：15

作者：

Chwala, A

Schultze, V

Stolz, R

Ramos, J

IJsselsteijn, R

Meyer, HG

Kretzschmar, D

机构：

[1] Inst Phys High Technol, Dept Cryoelect, D-07702 Jena, Germany

[2] Tech Univ Berlin, Inst Appl Geophys, D-13355 Berlin, Germany

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2001年 / 354卷 / 1-4期

关键词：

SQUID; SQUID magnetometer; transient electromagnetics; time domain electromagnetics; geophysics; geophysical exploration;

D O I：

10.1016/S0921-4534(01)00020-X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A superconducting quantum interference device (SQUID) system using high-T-c de SQUID magnetometers setup for geomagnetic prospection is presented. Tn geomagnetic prospection using the transient electromagnetics method the SQUID system had to compete with conventional induction coils. In measurements above real geological targets the significantly better performance of the SQUID based sensor compared to those coils could be demonstrated. The lower noise of the SQUID system at low frequencies allows measurement of the transients 5-10 times longer, which results in an increase of the investigation depth of a factor more than 3. For the same data quality the measurement time can be reduced by a factor of 25-100 compared to coils. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：45 / 48

页数：4

共 5 条

[1] Superconducting electronics coming to market [J].