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-BHerSincExp

0.25 0.755880759 0.755903399 0.755455402 0.7547953300.755202096
0.50 0.606700008 0.605270502 0.602998554 0.6066589080.606986951
0.75 0.502964042 0.497823942 0.494347872 0.5021105100.502348140
1.00 0.424333179 0.420343948 0.416399658 0.4238112030.42406427280.424010148
1.25 0.363227937 0.362814756 0.358770806 0.3630277250.363203991
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 0.2429182330.24302823440.243010373
2.25 0.215439334 0.232974191 0.229482688 0.2158198180.215895823
2.50 0.192406328 0.213705386 0.210384924 0.1929179480.192984580
2.75 0.172758691 0.197357837 0.194199930 0.1733796230.173440997
3.00 0.155871862 0.183318729 0.180313058 0.1565737730.156631657
3.25 0.141260504 0.171134229 0.168270054 0.1420133680.142067963
3.50 0.128541381 0.160461449 0.157728304 0.1293166130.129367328
3.75 0.117408054 0.151036695 0.148424721 0.1181802090.118226225
4.00 0.107612958 0.142653971 0.140154047 0.1083604410.10848002420.108401057
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 0.05940103180.059418888
7.00 0.046231022 0.085573204 0.083941323 0.046094375
8.00 0.036980654 0.075494762 0.074034822 0.0365804270.03653531660.036584707
9.00 0.030180901 0.067538722 0.066218399 0.029589375
10.00 0.025044744 0.061098873 0.059894055 0.0243142920.02430695530.024313708
15.00 0.011731220 0.041370727 0.040533524 0.0108037740.010808302
20.00 0.006585633 0.031271686 0.030630632 0.0057849410.0057928310.005789307
25.00 0.004104406 0.025135426 0.024616163 0.003478434
30.00 0.0022558360.0022526340.002260351
50.00 0.000761317 0.012687078 0.012420906 0.0006322540.00062132810.000632255
75.00 0.000193597 0.008484835 0.008305908 0.000219970
100.00 0.000023409 0.006373709 0.006238954 0.0001002420.000101341
500.00 0.0000010340.000001068