DETECTION OF ALO MOLECULES PRODUCED BY KRF LASER-ABLATED AL ATOMS IN OXYGEN GAS AND PLASMA ENVIRONMENTS

被引：16

作者：

CHING, CH ^{[1
]}

GILGENBACH, RM ^{[1
]}

LASH, JS ^{[1
]}

机构：

[1] UNIV MICHIGAN,DEPT NUCL ENGN,INTENSE ENERGY BEAM INTERACT LAB,ANN ARBOR,MI 48109

来源：

JOURNAL OF APPLIED PHYSICS | 1995年 / 78卷 / 05期

关键词：

D O I：

10.1063/1.359969

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Experiments have been performed to measure, in real time, the formation of AlO molecules from laser-ablated Al atoms in oxygen gas and plasma environments. The Al atom plume is generated by focusing a KrF laser (4 J/cm(2)) on Al metal targets or polycrystalline Al2O3 (alumina) ceramic. AlO molecule formation has been characterized by emission spectroscopy at 464.82 and 484.22 nm molecular bandheads. Time-integrated and time-resolved optical emissions have been measured of laser-ablated Al atoms interacting with oxygen or argon neutral-gas versus plasma backgrounds generated by a high-voltage capacitive discharge. Results indicate that gas/plasma-phase reactions occur between laser-ablated Al atoms and oxygen. Optimal enhancement of AlO optical emission is measured in oxygen plasmas at about 200 mTorr fill pressure. (C) 1995 American Institute of Physics.

引用

页码：3408 / 3410

页数：3

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