Gradiometer based on two single-hole SQUIDs; IEEE Transactions on Instrumentation and Measurement; Vol. 39, iss. 6
| Parent link: | IEEE Transactions on Instrumentation and Measurement Vol. 39, iss. 6.— 1990.— [P. 1034-1037] |
|---|---|
| Інші автори: | , , , |
| Резюме: | Title screen A gradiometer based on two ceramic superconducting quantum interference devices (SQUIDs) operating at liquid-nitrogen temperature is developed. The minimum gradient sensitivity is 3.1Ч10-12 T/mHz1/2 in a white-noise region. The minimum damping coefficient of the external disturbing factors is K=32. The gradiometer consists of two independent magnetometers separated from each other by 9 cm. It was tested by measuring the magnetocardiogram of a human heart. A typical magnetocardiogram was measured simultaneously with the magnetometer, with one lower channel of the gradiometer, and with the described gradiometer. The measurements were carried out with a bandwidth of 60 Hz, in real time, inside the ?5-mm-wall aluminum barrel 50-m outside the nearest building. The comparison of these magnetocardiograms shows that the gradiometer considerably suppresses the low-frequency variations of the magnetic field of the Earth, the low-frequency industrial noise, and the influence of cryostat vibration Режим доступа: по договору с организацией-держателем ресурса |
| Мова: | Англійська |
| Опубліковано: |
1990
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| Предмети: | |
| Онлайн доступ: | https://doi.org/10.1109/19.65821 |
| Формат: | Електронний ресурс Частина з книги |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=637238 |
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| 200 | 1 | |a Gradiometer based on two single-hole SQUIDs |f A. G. Likhachev, V. N. Polushkin, S. V. Uchaykin, B. V. Vasiliev | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: p. 1037 (6 tit.)] | ||
| 330 | |a A gradiometer based on two ceramic superconducting quantum interference devices (SQUIDs) operating at liquid-nitrogen temperature is developed. The minimum gradient sensitivity is 3.1Ч10-12 T/mHz1/2 in a white-noise region. The minimum damping coefficient of the external disturbing factors is K=32. The gradiometer consists of two independent magnetometers separated from each other by 9 cm. It was tested by measuring the magnetocardiogram of a human heart. A typical magnetocardiogram was measured simultaneously with the magnetometer, with one lower channel of the gradiometer, and with the described gradiometer. The measurements were carried out with a bandwidth of 60 Hz, in real time, inside the ?5-mm-wall aluminum barrel 50-m outside the nearest building. The comparison of these magnetocardiograms shows that the gradiometer considerably suppresses the low-frequency variations of the magnetic field of the Earth, the low-frequency industrial noise, and the influence of cryostat vibration | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t IEEE Transactions on Instrumentation and Measurement | ||
| 463 | |t Vol. 39, iss. 6 |v [P. 1034-1037] |d 1990 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
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| 610 | 1 | |a оборудование | |
| 610 | 1 | |a кардиология | |
| 610 | 1 | |a магнитометры | |
| 701 | 1 | |a Likhachev |b A. G. | |
| 701 | 1 | |a Polushkin |b V. N. | |
| 701 | 1 | |a Uchaykin |b S. V. |c specialist in the field of non-destructive testing |c Engineer of Tomsk Polytechnic University, Doctor of physical and mathematical sciences |f 1963- |g Sergey Victorovich |3 (RuTPU)RU\TPU\pers\32279 | |
| 701 | 1 | |a Vasiliev |b B. V. | |
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