About EasySpin
EasySpin is a Matlab
toolbox for solving problems
in Electron Paramagnetic Resonance (EPR) spectroscopy.
It supplements the numerical and visualisation power of Matlab with the
best computational methods devised by EPR spectroscopists.
EasySpin is freeware. To obtain the toolbox, go to
the download page.
Current version: 2.5.1 (4 May 2006)
Features
The main tools included are simulation functions for the following
types of spectra.
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Isotropic cw EPR spectra
- one unpaired electron, arbitrary number of nuclei
- resonance fields are exact (no perturbation formulae)
- automatic determination of magnetic field range
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Fast-motion cw EPR spectra
- one unpaired electron, arbitrary number of nuclei
- user provides rotational correlation time and tensor anisotropies,
line widths are automatically computed
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Slow-motion cw EPR spectra
- one unpaired electron, several nuclei
- axial rotational diffusion tensor
- arbitrary tensor orientations
- spin exchange
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Solid-state cw EPR spectra (powders and crystals)
- arbitrary number of electron and nuclear spins
- all interactions, including high-order operators and nuclear quadrupole
- resonance fields are exact (no perturbation formulae)
- broadening models: g, A and D strain, unresolved hyperfine splittings
- non-equilibrium populations
- perpendicular and parallel detection mode
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Solid-state ENDOR spectra (powders and crystals)
- arbitrary number of nuclei, includes nuclear quadrupole
- hyperfine enhancement
- built-in orientation selection
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Other features include
- Basic spin physics: spin operators, Stevens operators, spin Hamiltonians with arbitrary number of electron and nuclear spins,
angular momentum.
- Utilities: line shapes, Euler angle utilities, orientational grids, data import from all common EPR file formats (BES3T, ESP, Varian),
nuclear isotope database, field/frequency/g value conversion
- Signal conditioning and analysis: RC filtering, field-modulation,
cross-term averaged FFT, moving average, many apodization windows, baseline correction
- Resonances: ENDOR and cw EPR resonance line
computations, energy level diagrams
- Time-domain: support for propagators and density matrix evolutions.
Contact
EasySpin is written and maintained by the
EPR group at the
ETH Zürich.
For bug reports, inquiries, additional examples and suggestions, contact the
Before submitting bugs, download the latest version and verify them.