Absolute photodetachment cross section measurements of the O- and OH- anion

被引：42

作者：

Hlavenka, P. ^{[1
]}

Otto, R. ^{[1
]}

Trippel, S. ^{[1
]}

Mikosch, J. ^{[1
]}

Weidemueller, M. ^{[1
]}

Wester, R. ^{[1
]}

机构：

[1] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany

来源：

JOURNAL OF CHEMICAL PHYSICS | 2009年 / 130卷 / 06期

关键词：

atom-photon collisions; electron detachment; molecule-photon collisions; negative ions; oxygen; oxygen compounds; trapped ions; ELECTRON-AFFINITY; THRESHOLD PHOTODETACHMENT; ATOMIC OXYGEN; SPECTROSCOPY; IONS;

D O I：

10.1063/1.3080809

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Absolute total photodetachment cross sections of O- and OH- anions stored in a multipole radio frequency trap have been measured using a novel laser depletion tomography method. For OH- the total cross sections of 8.5(1)(stat)(3)(syst) and 8.1(1)(stat)(7)(syst)x10(-18) cm(2), measured at 662 and 632 nm, respectively, were found constant in the temperature range of 8-300 K. The O- cross sections 5.9(1)(stat)(2)(syst) and 6.3(1)(stat)(2)(syst)x10(-18) cm(2) measured at 170 K at 662 and 532 nm, respectively, agree within error estimations with preceding experiments and increase the accuracy of the widely used calibration standard for relative photodetachment measurements of diverse atomic and molecular species.

引用

页数：4

共 25 条

[1] ABSOLUTE PHOTODETACHMENT CROSS-SECTIONS OF CU- [J].