星际HⅡ/H_2O脉泽的一种激发机制

AN EXCITATION MECHANISM OF INTERSTELLAR H Ⅱ/H_2O MASERS

本文对于星际HⅡ/H_2O脉泽提出一种重要的激发机制——通过紫外辐射吸收的水的选择性预离解机制,并用它解释了HⅡ/H_2O脉泽能级布居反转的原因,预言了一系列水脉泽跃迁的存在,证明了它与各种天文条件的自洽.

An excitation mechanism of selective predissociation of H_2O after absorp- tion of ultraviolet radiation for interstellar H Ⅱ/H_2O masers is presented. By using this mechanism, the population inversion of H_2O maser levels is interpreted, and the existence of a series of H_2O maser transitions is predicted. Self-consistency of this mechanism with astronomical conditions is argued.