ELECTRON-ENERGY LOSS SPECTRA OF POLYCYCLIC AROMATIC-HYDROCARBONS

被引：15

作者：

KELLER, JW ^{[1
]}

COPLAN, MA ^{[1
]}

GORUGANTHU, R ^{[1
]}

机构：

[1] UNIV MARYLAND,INST PHYS & TECHNOL,COLLEGE PK,MD 20742

来源：

ASTROPHYSICAL JOURNAL | 1992年 / 391卷 / 02期

关键词：

DUST; EXTINCTION; MOLECULAR PROCESSES;

D O I：

10.1086/171396

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Polycyclic aromatic hydrocarbons (PAHs) have been tentatively identified as the source of infrared emission bands seen in reflection nebulae and other astronomical objects. PAHs may also play a role in other astronomical phenomena, but concrete identification of these systems await further understanding of the properties of PAHs as a class of molecules. We report on a survey of the electron energy loss spectroscopy of gas phase PAH molecules consisting of up to seven rings where we have limited the study to the more thermodynamically stable pericondensed systems. The aim of this work is to obtain absorption profiles (proportional to the oscillator strengths) from the visible to the soft X-ray region near 30 eV.

引用

页码：872 / 875

页数：4

共 35 条

[1] INTERSTELLAR POLYCYCLIC AROMATIC-HYDROCARBONS - THE INFRARED-EMISSION BANDS, THE EXCITATION EMISSION MECHANISM, AND THE ASTROPHYSICAL IMPLICATIONS [J].