Research Article
Spectral Method for Solving the Nonlinear Thomas-Fermi Equation Based on Exponential Functions
Table 2
Comparison of the approximate solutions
of the TF equation acquired by spectral methods based on different basis sets.
| | RC-P | RC-SK | RC-TK | RC-B | Her | Sinc | Exp |
| 0.25 | 0.755880759 | 0.755903399 | 0.755455402 | — | 0.754795330 | — | 0.755202096 | 0.50 | 0.606700008 | 0.605270502 | 0.602998554 | — | 0.606658908 | — | 0.606986951 | 0.75 | 0.502964042 | 0.497823942 | 0.494347872 | — | 0.502110510 | — | 0.502348140 | 1.00 | 0.424333179 | 0.420343948 | 0.416399658 | — | 0.423811203 | 0.4240642728 | 0.424010148 | 1.25 | 0.363227937 | 0.362814756 | 0.358770806 | — | 0.363027725 | — | 0.363203991 | 1.50 | 0.314660642 | 0.318737461 | 0.314761643 | — | — | — | 0.314780118 | 1.75 | 0.275233848 | 0.284014958 | 0.280179962 | — | — | — | 0.275453712 | 2.00 | 0.242678587 | 0.256010764 | 0.252344355 | — | 0.242918233 | 0.2430282344 | 0.243010373 | 2.25 | 0.215439334 | 0.232974191 | 0.229482688 | — | 0.215819818 | — | 0.215895823 | 2.50 | 0.192406328 | 0.213705386 | 0.210384924 | — | 0.192917948 | — | 0.192984580 | 2.75 | 0.172758691 | 0.197357837 | 0.194199930 | — | 0.173379623 | — | 0.173440997 | 3.00 | 0.155871862 | 0.183318729 | 0.180313058 | — | 0.156573773 | — | 0.156631657 | 3.25 | 0.141260504 | 0.171134229 | 0.168270054 | — | 0.142013368 | — | 0.142067963 | 3.50 | 0.128541381 | 0.160461449 | 0.157728304 | — | 0.129316613 | — | 0.129367328 | 3.75 | 0.117408054 | 0.151036695 | 0.148424721 | — | 0.118180209 | — | 0.118226225 | 4.00 | 0.107612958 | 0.142653971 | 0.140154047 | — | 0.108360441 | 0.1084800242 | 0.108401057 | 4.25 | 0.098954329 | 0.135150082 | 0.132753853 | — | — | — | 0.099694306 | 4.50 | 0.091266456 | 0.128394110 | 0.12609396 | — | — | — | 0.091944333 | 4.75 | 0.084412289 | 0.122279834 | 0.120068868 | — | — | — | 0.085017755 | 5.00 | 0.078277758 | 0.116720187 | 0.114592127 | — | — | — | 0.078803669 | 6.00 | 0.059236422 | 0.098752518 | 0.096904158 | — | — | 0.0594010318 | 0.059418888 | 7.00 | 0.046231022 | 0.085573204 | 0.083941323 | — | — | — | 0.046094375 | 8.00 | 0.036980654 | 0.075494762 | 0.074034822 | — | 0.036580427 | 0.0365353166 | 0.036584707 | 9.00 | 0.030180901 | 0.067538722 | 0.066218399 | — | — | — | 0.029589375 | 10.00 | 0.025044744 | 0.061098873 | 0.059894055 | 0.024314292 | — | 0.0243069553 | 0.024313708 | 15.00 | 0.011731220 | 0.041370727 | 0.040533524 | — | 0.010803774 | — | 0.010808302 | 20.00 | 0.006585633 | 0.031271686 | 0.030630632 | 0.005784941 | 0.005792831 | — | 0.005789307 | 25.00 | 0.004104406 | 0.025135426 | 0.024616163 | — | — | — | 0.003478434 | 30.00 | — | — | — | 0.002255836 | 0.002252634 | — | 0.002260351 | 50.00 | 0.000761317 | 0.012687078 | 0.012420906 | 0.000632254 | — | 0.0006213281 | 0.000632255 | 75.00 | 0.000193597 | 0.008484835 | 0.008305908 | — | — | — | 0.000219970 | 100.00 | 0.000023409 | 0.006373709 | 0.006238954 | 0.000100242 | — | — | 0.000101341 | 500.00 | — | — | — | 0.000001034 | — | — | 0.000001068 |
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