EFG Calculator
Calculate Electric Field Gradient (EFG) tensors for nuclear quadrupole interactions. Essential for NMR, NQR, and solid-state physics applications!
⚛️ Quantum Physics • 🧲 NMR/NQR • 📊 Tensor Analysis • 🔬 Spectroscopy
EFG Parameters
Point Charges Configuration
EFG Visualization
Cubic Symmetry
Current Formula:
EFG Tensor Matrix
Vxx
Vxy
Vxz
Vyx
Vyy
Vyz
Vzx
Vzy
Vzz
EFG Calculation Results
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Vzz (V/m²)
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η (asymmetry)
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CQ (MHz)
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Symmetry
Principal Components
Vxx:
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Vyy:
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Vzz:
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|Vxx|:
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|Vyy|:
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|Vzz|:
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Trace:
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Determinant:
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Max Gradient:
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EFG Component Analysis
"The electric field gradient is a window into the electronic structure around the nucleus."
- Nuclear Physics Principle
Physical Insights
Symmetry Analysis
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NMR/NQR Effects
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Crystal Structure
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Applications
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EFG Calculator Guide
What is Electric Field Gradient (EFG)?
The Electric Field Gradient (EFG) is a second-rank tensor that describes how the electric field varies in space around a nucleus. It's crucial for understanding nuclear quadrupole interactions in NMR, NQR, and Mössbauer spectroscopy.
Calculation Methods
- Point Charges: Calculate EFG from surrounding point charges
- Tensor Components: Direct input of EFG tensor elements
- Quadrupole Coupling: From experimental NMR/NQR parameters
- Crystal Field: Using crystal field theory parameters
Key Parameters
- Vzz: Principal component (largest magnitude)
- η (eta): Asymmetry parameter (0 ≤ η ≤ 1)
- CQ: Quadrupole coupling constant
- Symmetry: Point group symmetry of the site
Applications
- Nuclear Magnetic Resonance (NMR) spectroscopy
- Nuclear Quadrupole Resonance (NQR) analysis
- Mössbauer spectroscopy interpretation
- Crystal structure determination
- Electronic structure calculations