Photoionization cross section measurements of the excited states of cobalt in the near-threshold region

Journal Article · Wed Oct 15 04:00:00 EDT 2014 · AIP Advances

DOI:https://doi.org/10.1063/1.4898326· OSTI ID:22299619

Zheng, Xianfeng; Zhou, Xiaoyu; Cheng, Zaiqi; Jia, Dandan; Qu, Zehua; Yao, Guanxin; Zhang, Xianyi; Cui, Zhifeng ^[1]

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1. Institute of Atomic and Molecular Physics, Anhui Normal University, Wuhu, Anhui, 241000 (China)

We present measurements of photoionization cross-sections of the excited states of cobalt using a two-color, two-step resonance ionization technique in conjunction with a molecular beam time of flight (TOF) mass spectrometer. The atoms were produced by the laser vaporization of a cobalt rod, coupled with a supersonic gas jet. The absolute photoionization cross-sections at threshold and near-threshold regions (0-1.2 eV) were measured, and the measured values ranged from 4.2±0.7 Mb to 10.5±1.8 Mb. The lifetimes of four odd parity energy levels are reported for the first time.

• OSTI ID: 22299619
• Journal Information: AIP Advances, Journal Name: AIP Advances Journal Issue: 10 Vol. 4; ISSN AAIDBI; ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
74 ATOMIC AND MOLECULAR PHYSICS
COBALT
CROSS SECTIONS
EVAPORATION
EXCITED STATES
MOLECULAR BEAMS
PARITY
PHOTOIONIZATION
RESONANCE