Weak magnetic scanning system DXSS-WM

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The Weak Magnetic Scanning System is a high-sensitivity instrument for mapping and measuring extremely small magnetic moments and weak magnetic fields. It was developed under the National Key Research and Development Program Major Instrument Project led by the Institute of Physics, Chinese Academy of Sciences.

Application Areas

• Materials Science: Soft magnetic composite materials
• Deep Space Exploration: Lunar residue magnetic decoding
• Geological Exploration: Basalt magnetic scanning
• Other uses: Magnetic anti-counterfeiting for banknotes

Three key technological breakthroughs

• Optimization of high-sensitivity GMI materials and devices
• Precise and efficient magnetic moment measurement and magnetic inversion
• Z-axis differential measurement and micro-vibration phase-locked detection

Additional notes

• The 10p emu magnetic measurement product represents a breakthrough from zero to one.
• This high-sensitivity weak magnetic scanning system instrument was developed under the National Key Research and Development Program Major Instrument Project led by the Institute of Physics, Chinese Academy of Sciences.

Technical features / specifications

• Indicator descriptions / Project objectives (table header context)
• Magnetic moment sensitivity: ≤1×10⁻¹⁴ Am²
• Magnetic moment modulus deviation: ≤2%
• Magnetic moment direction deviation: ≤1
• Magnetic field direction deviation: ≤1.5 pT/√Hz
• Signal moment sensitivity: ≤50 μm
• Spatial resolution: ≤1 μm
• Positioning accuracy: ≥51 mm × 51 mm
• Scanning range: ≥1 T adjustable
• Peak pulse charging magnetic field: ≥1 T adjustable
• Peak AC decharging magnetic field: ≥3000 hours
• Mean time between failures (MTBF): ≥8 levels
• Technology readiness: ≥3
• Number of application areas: System software with magnetic moment inversion function