星际OH及其脉泽的一种新的发生机制(英文)  

A NEW GENERATING MECHANISM FOR INTERSTELLAR OH AND THEIR MASERS

作　　者：刘汉淜[1] 孙锦[2] 

机构地区：[1]北京师范大学物理学系,北京100875 [2]北京师范大学天文学系,北京100875

出　　处：《北京师范大学学报（自然科学版）》2000年第1期36-42,共7页Journal of Beijing Normal University(Natural Science)

基　　金：ProjectSupportedbyNNSFC!(198730 0 3)

摘　　要：针对星际OH自由基及OH脉泽起源的多种解释各自存在的困难 ,抓住OH的生成环境特征 ,从星形成区紫外光子与H2 O分子的相互作用出发 ,对OH自由基的产生与OH脉泽的激发机制提出了一种新解释 .这种新解释克服了过去提出的辐射机制的困难 ,并且能满足各实际天文条件 ,因此是一种有前途的机制 .There are rich OH radicals and their masers have been observed in interstellar space. Their origin and evolution have not been understood well yet. By addressing the formation of OH radicals and their population inversion, we propose a new scenario for the origin of OH masers. This mechanism has overcome the defects of former radiation mechanism. And it is both simple and associated with astronomical conditions. The bright future can be predicted.

关 键 词：量际脉泽 激发机制 光离解 对称性守恒 

分 类 号：P155.22[天文地球—天文学]