Dielectronic recombination of Ne-like tungsten

Relativistic calculations of the dielectronic recombination (DR) cross section and rate coefficient for Ne-like tungsten [Formula Presented] in the ground state [Formula Presented] are performed. The DR contributions of the most important Na-like doubly excited configuration complexes, namely, [Formula Presented] [Formula Presented] and [Formula Presented] are calculated by level-by-level computations. Collisional transitions following the initial electron capture are neglected. The total DR cross section is presented in the form of 5-eV-wide peaks for the purpose of revealing the detailed atomic level structure, and in the form of 50-eV-wide peaks for the purpose of comparison with planned electron-beam experiments. The [Formula Presented] complex is found to provide the dominant DR channel. The sum of the DR contributions of the [Formula Presented] configurations with [Formula Presented] evaluated by applying the complex-by-complex [Formula Presented] extrapolation method, is found to represent at most 3% of the total DR rate coefficient. The DR contribution of [Formula Presented] configurations with [Formula Presented] is found to be negligible (about 0.1%). The total DR rate coefficient is fitted to a convenient analytical expression which reproduces the original data with an accuracy of about 2% or better within a very wide electron temperature range.