Vibrational excitation of H2 in intense ultraviolet fluxes
Vibrational excitation of H2 in intense ultraviolet fluxes
复制标题
H2 在强紫外线通量中的振动激发
DOI：
10.1086/155850
复制
发表时间：
1978
期刊：
影响因子：
--
通讯作者：
J. Shull
中科院分区：
文献类型：
--
作者：
J. Shull
本文研究了H/sub ~ 2/在强紫外辐射场中的振动激发。辐射级联通过束缚能级的基态电子态，以下吸收的莱曼和维尔纳带光子，修改为包括“多泵浦”和直接从高振动水平的光解离的影响。虽然紫外泵浦产生的激发振动能级（v>或=1）的柱密度似乎太低，无法解释最近观察到的猎户座四极发射线，但有人认为，在致密分子云附近的O星紫外泵浦产生的（3-0）和（4-0）波段的远红光线是可以探测到的。
We study the vibrational excitation of H/sub 2/ in intense ultraviolet radiation fields. The radiative cascade through bound levels of the ground electronic state, following absorption of Lyman and Werner band photons, is modified to include effects of ''multiple pumping'' and direct photodissociation from the high vibrational levels. Although the column densities in the excited vibrational levels (v> or =1) produced by UV pumping appear too low to explain the recently observed Orion quadrupole emission lines, it is suggested that the far-red lines in the (3-0) and (4-0) bands, produced by UV pumping from O stars near dense molecular clouds, may be detectable.