Parallel dipole line trap gravimeter
US10613249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2017 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Oct 25, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V7/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A highly sensitive gravimeter using a magnetic parallel dipole line (PDL) trap system is provided. In one aspect, a gravimeter includes: a vacuum enclosure; a PDL trap within the vacuum enclosure, the PDL trap having a pair of dipole line magnets, and a diamagnetic rod levitating in between the dipole line magnets; and a heater and temperature sensor within the vacuum enclosure configured to maintain a constant temperature within the vacuum enclosure that is greater than a temperature outside of the vacuum enclosure and precision frequency measurement system. The frequency of the oscillation of the trapped diamagnetic rod will yield the local gravitational acceleration. Methods for measuring a local gravitational field using the present gravimeter are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.