PILOTING METHOD OF A LASER SYSTEM OF AN ABSOLUTE GRAVIMETRIC MEASUREMENT DEVICE BY ATOMIC INTERFEROMETRY FOR GEOPHYSICAL APPLICATIONS PARTICULARLY FOR MONITORING HYDROCARBON RESERVOIRS

摘要

The present invention relates to a piloting method of a laser system of an absolute gravimetric measurement device by atomic interferometry particularly suitable for on site applications and advantageously used in the geophysical field comprising the following steps: generating (101) the cooling entrapment manipulation thrust and detection bands of a plurality of atoms; cooling (102) the plurality of atoms; entrapping (103) the plurality of cooled atoms in a three dimensional magneto optical trap; releasing (104) the plurality of atoms in free fall in an ultra vacuum system (14); performing (107) an interferometric sequence; performing (108) a detection; wherein the release step (104) comprises the step which consists in the quenching (109) of the three dimensional magneto optical trap through the contemporaneous extinction of said bands for producing a three dimensional magneto optical trap (32) and a trap magnetic field.