Ultra-high sensitivity magnetic field and magnetization measurements with an atomic magnetometer
Atomic Physics
2015-05-14 v1 Geophysics
Instrumentation and Detectors
Abstract
We describe an ultra-sensitive atomic magnetometer using optically-pumped potassium atoms operating in spin-exchange relaxation free (SERF) regime. We demonstrate magnetic field sensitivity of 160 aT/Hz in a gradiometer arrangement with a measurement volume of 0.45 cm and energy resolution per unit time of . As an example of a new application enabled by such a magnetometer we describe measurements of weak remnant rock magnetization as a function of temperature with a sensitivity on the order of 10 emu/cm/Hz and temperatures up to 420C.
Keywords
Cite
@article{arxiv.0910.2206,
title = {Ultra-high sensitivity magnetic field and magnetization measurements with an atomic magnetometer},
author = {H. B. Dang and A. C. Maloof and M. V. Romalis},
journal= {arXiv preprint arXiv:0910.2206},
year = {2015}
}