Measurement of Photoionization Cross Sections of the Excited States of Titanium

Measurement of Photoionization Cross Sections of the Excited States of Titanium

Resonance-enhanced multiphoton ionization of the titanium atoms has been investigated in the 293 321 nm wavelength. We couple a laser-ablated metal target into a molecular beam to produce free atoms. Ions produced from photoionization of the neutral atoms are monitored by a home-built time-of-flight...

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Veröffentlicht in:Chinese journal of chemical physics 2009-12, Vol.22 (6), p.615-620
Hauptverfasser: Yang, Jia-jun, Hu, Xing-yong, Wu, Hong-xia, Fan, Jian-mei, Cong, Ran, Cheng, Yi, Ji, Xue-han, Yao, Guan-xin, Zheng, Xian-feng, Cui, Zhi-feng
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中性原子
光电离截面
共振增强
多光子电离
测量
激光烧蚀
激发态
钛原子
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container_end_page 620
container_issue 6
container_start_page 615
container_title Chinese journal of chemical physics
container_volume 22
creator Yang, Jia-jun
Hu, Xing-yong
Wu, Hong-xia
Fan, Jian-mei
Cong, Ran
Cheng, Yi
Ji, Xue-han
Yao, Guan-xin
Zheng, Xian-feng
Cui, Zhi-feng
description Resonance-enhanced multiphoton ionization of the titanium atoms has been investigated in the 293 321 nm wavelength. We couple a laser-ablated metal target into a molecular beam to produce free atoms. Ions produced from photoionization of the neutral atoms are monitored by a home-built time-of-flight mass spectrometer. Photoionization cross sections of the excited states of Ti I were deduced from the dependence of the ion signal intensity on the laser intensity for photon energies close to the ionization threshold. The values obtained range from 0.2 Mb to 6.0 Mb. No significant isotope-dependence was found from measurements of the photoionization cross sections of ^46Ti, ^47Ti, and ^48Ti.
doi_str_mv 10.1088/1674-0068/22/06/615-620
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subjects 中性原子
光电离截面
共振增强
多光子电离
测量
激光烧蚀
激发态
钛原子
title Measurement of Photoionization Cross Sections of the Excited States of Titanium
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