An accurate Fortran code for computing hydrogenic continuum wave functions at a wide range of parameters

作者：Peng Liang You^*; Gong Qihuang

来源：Computer Physics Communications, 2010, 181(12): 2098-2101.

DOI：10.1016/j.cpc.2010.08.034

• Continuum state wavefunction
• Coulomb wave function

The accurate computations of hydrogenic continuum wave functions are very important in many branches of physics such as electron-atom collisions, cold atom physics, and atomic ionization in strong laser fields, etc. Although there already exist various algorithms and codes, most of them are only reliable in a certain ranges of parameters. In some practical applications, accurate continuum wave functions need to be calculated at extremely low energies, large radial distances and/or large angular momentum number. Here we provide such a code, which can generate accurate hydrogenic continuum wave functions and corresponding Coulomb phase shifts at a wide range of parameters. Without any essential restrict to angular momentum number, the present code is able to give reliable results at the electron energy range vertical bar 10(-3),10(3)vertical bar eV for radial distances of vertical bar 10(-2), 10(4)vertical bar a.u. We also find the present code is very efficient, which should find numerous applications in many fields such as strong field physics.

• 出版日期2010-12
• 单位北京大学