Abstract
Laser-pumped cesium magnetometers allow highly sensitive small field magnetometry at room temperature. We report on applications of that technique in biomagnetic diagnostics and in a new experiment searching for a neutron electric dipole moment (nEDM) experiment. In the biomagnetic application the magnetiv field from the beating human heart is detected using a gradiometer which reaches an intrinsic sensitvity of 80 fT/Hz<sup>1/2</sup> with a spatial resolution of 28 mm. The device can record time-resolved magnetic field maps above the human body surface and its performance is comparable to devices based on Hi-T<sub>c</sub>-SQUID (superconducting quantum interference device) technology. In the nEDM experiment laser-pumped cesium magnetometers will be used to measure and stabilize a DC magnetic field of 2μT and to generate the oscillating filed for the neutron Ramsey resonance. Those devices reach an intrinsic sensitivity of about 14 fT/Hz<sup>1/2</sup> with a measurement bandwidth of 1kHz. The general principle of operation and specific results are presented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
