| 摘要 |
PROBLEM TO BE SOLVED: To measure magnetic fields of objects to be measured without being influenced by disturbance exceeding a range that a measurement part which irradiates gas cells to measure their magnetic fields can measure even when there is the disturbance to the measurement part.SOLUTION: A magnetic field measurement device includes: a first gas cell 10 arranged in the +z direction viewed from an object 50 to be measured; a second gas cell 20 arranged in the +z direction viewed from the first gas cell 10; a first measurement part 11 which emits light to measure a component in the +z direction of a magnetic field in the first gas cell 10; a second measurement part 21 which emits light to measure a component in the +z direction of a magnetic field in the second gas cell 20; magnetic field generation means (coils 31, 32) for sandwiching the object 50 to be measured, the first gas cell 10, the second gas cell 20 along the +z direction to generate a magnetic field toward the second gas cell 20 so that the component measured by the second measurement part 21 becomes small; and an output part 40 which outputs a signal according to difference in the components measured by the first measurement part 11 and the second measurement part 21, respectively. |
