Theoretical studies of photodissociation cross sections of the beryllium monohydride cation BeH${}^{+}$ are reported. Explicit photodissociation cross sections are computed for transitions from its ground electronic state $X^1{\Sigma }^{+}$ to excited ones $A^1{\Sigma }^{+},$ B¹Π and $C^1{\Sigma }^{+}$ respectively. Partial cross sections are computed for nearly the full range of rovibrational levels of the $X^1{\Sigma }^{+}$ state and for photon wavelengths ranging from 70 nm to threshold. Photodissociation cross sections are presented at temperatures of 1800 K, 4500 K, 10000 K and 20000 K as examples, where a Boltzmann distribution of initial rovibrational levels is assumed. This paper provides the complementary photodissociation cross sections following the bound-bound transition of previous work for BeH${}^{+}$ [7]. The results are applicable to the photodissociation of BeH${}^{+}$ in the early universe and in a variety of ultraviolet (UV) irradiated interstellar environments, which is of great importance to the modelling of features of interstellar observations as well as the fusion plasma emissions in the edge and divertor region.

一氢化铍阳离子BeH光解离截面的理论研究${}^{+}$被报道。计算从其基态电子态跃迁的显式光解离截面$X^{\mathrm{1个}}{\Sigma }^{+}$ 对激动的人 ${\mathrm{一种}}^{\mathrm{1个}}{\Sigma }^{+}，$ 乙¹ Π和$C^{\mathrm{1个}}{\Sigma }^{+}$分别。计算部分横截面的几乎所有水平的旋转振动$X^{\mathrm{1个}}{\Sigma }^{+}$状态和光子波长范围从70 nm到阈值。作为示例给出了在1800 K，4500  K，10000  K和20000  K的温度下的光解离截面 ，其中假定了初始振动水平的玻尔兹曼分布。本文提供了BeH先前工作的有界跃迁之后的互补光解离截面${}^{+}$[7]。该结果适用于BeH的光解离${}^{+}$ 在早期宇宙中以及在各种紫外线（UV）辐射的星际环境中，这对星际观测的特征建模以及边缘和偏航器区域的聚变等离子体发射非常重要。