| 摘要 |
PURPOSE:To improve the output characteristic of a magnetic bubble detector within the variable range of rotational magnetic field intensity by setting the direction with respect to a detector line for a holding magnetic field within the specific range. CONSTITUTION:When the intensity of a rotational magnetic field HR drops below the specific value HRmim, noise N of the output of a magnetic bubble become larger abruptly. The direction of a holding magnetic field HDC is defined counterclockwise by setting a magnetic bubble transfer direction P, where a magnetic bubble transfers a detector line 4a, to the direction of zero angle. an optimum direction B is obtained when the direction of the holding magnetic field HDC is 45 deg.+ or -45 deg., therefore the HRmin where noise of a detector come to be generated can be minimized, and S/N of a detector is improved. As a result, the direction of the holding magnetic field with respect to the detector line 4a is selected and set within the range of -10 deg.-100 deg.. |
