| Автор | V Zakosarenko |
| Автор | L Warzemann |
| Автор | J Schambach |
| Автор | K Blüthner |
| Автор | K-H Berthel |
| Автор | G Kirsch |
| Автор | P Weber |
| Автор | R Stolz |
| Дата выпуска | 1996-04-01 |
| dc.description | Various types of thin-film dc gradiometer SQUIDs with integrated pickup loops were investigated. The SQUIDs were prepared on a chip in the well developed technology. It was shown that the SQUIDs work in an unshielded environment. Our best SQUIDs have a field gradient sensitivity better then . All gradiometers have some response to a homogeneous field, i.e. a parasitic area. The effective pickup area, the field gradient sensitivity, and the components of the parasitic area for the field perpendicular and parallel to the gradiometer plane were measured for all types of gradiometer. The calculations of flux coupling efficiency are compared with experimental results. The origins of parasitic area are discussed. A further reduction of external disturbances was achieved by using an electronic second-order gradiometer. Examples of magnetocardiographic measurement in a physical laboratory without any shielding with first and second-order gradiometers are shown. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Integrated LTS gradiometer SQUID systems for unshielded measurements in a disturbed environment |
| Тип | paper |
| DOI | 10.1088/0953-2048/9/4A/029 |
| Electronic ISSN | 1361-6668 |
| Print ISSN | 0953-2048 |
| Журнал | Superconductor Science and Technology |
| Том | 9 |
| Первая страница | A112 |
| Последняя страница | A115 |
| Выпуск | 4A |
