SQUID gradiometer measurement system for magnetorelaxometry in a disturbed environment

被引:10
作者
Schambach, J
Warzemann, L
Weber, P
Kötitz, R
Weitschies, W
机构
[1] Univ Jena, D-07743 Jena, Germany
[2] Inst Dignostikforsch GmbH Berlin, D-14050 Berlin, Germany
关键词
D O I
10.1109/77.783791
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A SQUID measurement system for magneto-relaxometry (MRX) in disturbed environment is presented. It was developed for the determination of the distribution of magnetic nanoparticles in large objects like animals, The system is based on a thin film LTS SQUID gradiometer with a baseline of 5 mm and a field gradient sensitivity of about 30 fT/cmHz(1/2). The entire system is PC-controlled and includes a nonmagnetic x-y stage, A Helmholtz coil of 80 cm diameter allows the magnetization of the samples with fields up to 7 mT. First measurements in a disturbed environment are presented.
引用
收藏
页码:3527 / 3530
页数:4
相关论文
共 9 条
[1]   TIME-DEPENDENT MAGNETIZATION IN FINE-PARTICLE FERROMAGNETIC SYSTEMS [J].
CHANTRELL, RW ;
HOON, SR ;
TANNER, BK .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1983, 38 (02) :133-141
[2]   TIME-DOMAIN STUDY OF BROWNIAN AND NEEL RELAXATION IN FERROFLUIDS [J].
KOTITZ, R ;
FANNIN, PC ;
TRAHMS, L .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 149 (1-2) :42-46
[3]  
KOTITZ R, 1997, IEEE T APPL SUPERCON, V7
[4]   A SQUID based AC susceptometer for the investigation of large samples [J].
Pasquarelli, A ;
DelGratta, C ;
DellaPenna, S ;
DiLuzio, S ;
Pizzella, V ;
Romani, GL .
PHYSICS IN MEDICINE AND BIOLOGY, 1996, 41 (11) :2533-2539
[5]   SPATIAL RESOLUTION AND SENSITIVITY OF MAGNETIC SUSCEPTIBILITY IMAGING [J].
Thomas, I. M. ;
Ma, Y. P. ;
Tan, S. ;
Wikswo, J. P., Jr. .
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1993, 3 (01) :1937-1940
[6]   INTEGRATED LTS GRADIOMETER SQUID SYSTEMS FOR MEASURING OF MAGNETIC-FIELD DISTRIBUTIONS IN AN UNSHIELDED ENVIRONMENT [J].
WEBER, P ;
ZAKOSARENKO, VM ;
BERTHEL, KH ;
BLUTHNER, K ;
SCHAMBACH, J ;
WARZEMANN, L ;
KIRSCH, G ;
DOHLER, T ;
STOLZ, R .
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1995, 5 (02) :2493-2496
[7]  
WEITSCHIES W, 1997, PHARM PHARM LETT, V7, P1
[8]   MAGNETIC SUSCEPTIBILITY IMAGING FOR NONDESTRUCTIVE EVALUATION [J].
Wikswo, J. P., Jr. ;
Ma, Y. P. ;
Sepulveda, N. G. ;
Tan, S. ;
Thomas, I. M. ;
Lauder, A. .
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1993, 3 (01) :1995-2002
[9]   Integrated LTS gradiometer SQUID systems for unshielded measurements in a disturbed environment [J].
Zakosarenko, V ;
Warzemann, L ;
Schambach, J ;
Bluthner, K ;
Berthel, KH ;
Kirsch, G ;
Weber, P ;
Stolz, R .
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1996, 9 (4A) :A112-A115