Electron-induced dissociative excitation (DE) is a little studied process of significant applied relevance. Our aim is to provide a theoretical counterpart to earlier experiments [M. J. Jensen, R. C. Bilodeau, O. Heber, H. B. Pedersen, C. P. Safvan, X. Urbain, D. Zajfman, and L. H. Andersen, Phys. Rev. A 60, 2970 (1999)] on DE of ${\mathrm{H}}_2{\mathrm{O}}^{+}$. For this purpose, we have performed low-energy fixed-nuclei scattering calculations, based on the R-matrix method, for over 1800 geometries of ${\mathrm{H}}_2{\mathrm{O}}^{+}$. We have identified and characterized three resonances lying above the second $\left(\tilde{B}\right)$ excited state of ${\mathrm{H}}_2{\mathrm{O}}^{+}$; their energy, lifetime, and associated quantum defect have been determined. We assess their possible contribution to the DE process.

中文翻译：

---

对H2O +中电子诱导的解离激发的描述：B̃态以上三个共振的研究

电子诱导的离解激发（DE）是经过研究的，具有重要应用意义的过程。我们的目标是为早期实验提供理论上的对等[MJ Jensen，RC Bilodeau，O。Heber，HB Pedersen，CP Safvan，X。Urbain，D。Zajfman和LH Andersen，Phys。版本A 60，2970（1999）]上的DE${\mathrm{H}}_{\mathrm{2个}}{\mathrm{Ø}}^{+}$。为此，我们基于R矩阵方法对1800多个几何形状的分子进行了低能固定核散射计算。${\mathrm{H}}_{\mathrm{2个}}{\mathrm{Ø}}^{+}$。我们已经确定并确定了第二个共振之上的三个共振$（\widetilde{乙}）$ 的兴奋状态 ${\mathrm{H}}_{\mathrm{2个}}{\mathrm{Ø}}^{+}$; 已经确定了它们的能量，寿命和相关的量子缺陷。我们评估了它们对DE过程的可能贡献。