Simulação de espectros de ressonância paramagnética eletrônica (RPE) através do programa NLSL Simulation of electron paramagnetic resonance (EPR) spectra using the non-linear least squares program NLSL
| Autor: | Carlos Ernesto Garrido Salmon, Diógenes de Sousa Neto, Marcel Tabak, Antonio José da Costa Filho |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 30, Iss 5, Pp 1240-1248 (2007) |
| Druh dokumentu: | article |
| ISSN: | 0100-4042 1678-7064 |
| DOI: | 10.1590/S0100-40422007000500036 |
| Popis: | EPR users often face the problem of extracting information from frequently low-resolution and complex EPR spectra. Simulation programs that provide a series of parameters, characteristic of the investigated system, have been used to achieve this goal. This work describes the general aspects of one of those programs, the NLSL program, used to fit EPR spectra applying a nonlinear least squares method. Several motion regimes of the probes are included in this computational tool, covering a broad range of spectral changes. The meanings of the different parameters and rotational diffusion models are discussed. The anisotropic case is also treated by including an orienting potential and order parameters. Some examples are presented in order to show its applicability in different systems. |
| Databáze: | Directory of Open Access Journals |
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