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James A. Van Allen journal, October 1955-March 1958
Page 258
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beam of light. Absorption of the light [changed the population of the magnetic substates of the [ground?] state of Na. Precession of the atoms in the ambient magnetic field with magnetic moments preferentially aligned this would give an induced signal in a coil around the sample. Bell also mentioned optical modulations as another method of detection. He stated that Packard at Varian Associates had estimated that a rocket or satellite-borne magnetometer of about one lb. weight could be made. Much less power consumption required than for proton precession magnetometer also ! ONR has a small amount of money available for the purpose.
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beam of light. Absorption of the light [changed the population of the magnetic substates of the [ground?] state of Na. Precession of the atoms in the ambient magnetic field with magnetic moments preferentially aligned this would give an induced signal in a coil around the sample. Bell also mentioned optical modulations as another method of detection. He stated that Packard at Varian Associates had estimated that a rocket or satellite-borne magnetometer of about one lb. weight could be made. Much less power consumption required than for proton precession magnetometer also ! ONR has a small amount of money available for the purpose.
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