DOI: 10.1029/2018JA025178
Scopus记录号: 2-s2.0-85052626211
论文题名: Laser Remote Magnetometry Using Mesospheric Sodium
作者: Kane T.J. ; Hillman P.D. ; Denman C.A. ; Hart M. ; Phillip Scott R. ; Purucker M.E. ; Potashnik S.J.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 8 起始页码: 6171
结束页码: 6188
语种: 英语
英文关键词: atomic magnetometry
; Kuiper telescope
; laser guide star
; mesosphere
; sodium
英文摘要: We have demonstrated a remote magnetometer based on sodium atoms in the Earth's mesosphere, at a 106-km distance from our instrument. A 1.33-watt laser illuminated the atoms, and the magnetic field was inferred from backscattered light collected by a telescope with a 1.55-m-diameter aperture. We theoretically predict a shot noise limited measurement sensitivity of 19 nT/√Hz. The measured sensitivity was 162 nT/√Hz due to a smaller returned intensity and smaller resonance strength than expected. The value of magnetic field inferred from our measurement is consistent with several models of the Earth's field shape to within a fraction of a percent. Projected improvements in optics, plus the use of advanced lasers or a large telescope, could result in 1-nT/√Hz sensitivity. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113337
Appears in Collections: 气候减缓与适应
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作者单位: FASORtronics, Albuquerque, NM, United States; University of Arizona College of Optical Sciences, Tucson, AZ, United States; Goddard Space Flight Center, NASA, Planetary Magnetospheres Laboratory, Greenbelt, MD, United States; NSWC Carderock Division, West Bethesda, MD, United States
Recommended Citation:
Kane T.J.,Hillman P.D.,Denman C.A.,et al. Laser Remote Magnetometry Using Mesospheric Sodium[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(8)