ЯМР-гироскопы со спин-обменной накачкой
Аннотация
Представлена базовая теория гироскопа на ядерном магнитном резонансе (ЯМР) со спин-обменной накачкой. Дан обзор физики спин-обменных столкновений и релаксации в той мере, в какой они влияют на точностные характеристики ЯМР. Представлены простая модель ЯМР-осциллятора и ее применение для анализа динамического отклика и шумовых свойств осциллятора. Рассматриваются основные систематические погрешности (дифференциальные поля, созданные щелочным металлом, квадрупольные сдвиги и дрейфы сдвига), ограничивающие стабильность смещения нуля, и обсуждаются методы их минимизации. Дается краткий обзор практического применения и характеристик ЯМР-гироскопа, изготовленного фирмой Northrop Grumman Corporation, и в заключение даны некоторые комментарии о перспективах на будущее.
Об авторах
Т. Дж. Уокер
Висконсинский университет в Мэдисоне
Соединённые Штаты Америки
Соединённые Штаты Америки
Уокер Тэд Дж. Профессор
М. С. Ларсен
Компания «Нортроп Грумман» (Northrop Grumman), отделение «Передовые концепции и технологии», Вудланд Хиллс (Калифорния).
Соединённые Штаты Америки
Соединённые Штаты Америки
Ларсен Майкл С.
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Рецензия
Для цитирования:
Уокер Т., Ларсен М. ЯМР-гироскопы со спин-обменной накачкой. Гироскопия и навигация. 2018;26(1):28-54.
For citation:
Walker T., Larsen M. Spin-Exchange-Pumped NMR Gyros. Giroskopiya i Navigatsiya. 2018;26(1):28-54. (In Russ.)
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