Resonant ionization spectroscopy of autoionizing Rydberg states in cobalt and redetermination of its ionization potential

Liu, Yuan; Gottwald, T.; Mattolat, C.; Wendt, K.

doi:10.1088/1361-6455/aa58d0

Title: Resonant ionization spectroscopy of autoionizing Rydberg states in cobalt and redetermination of its ionization potential

Full Record
Other Related Research

Abstract

We obtained multi-step resonance ionization spectroscopy of cobalt using a hot-cavity laser ion source and three Ti:Sapphire lasers. Furthermore, the photoionization spectra revealed members of five new autoionizing Rydberg series that originate from three different lower levels of 3d⁷4s5s h⁴F_9/2, 3d⁷4s4d f⁴G_11/2, and 3d⁷4s4d f⁴H_13/2 and converge to the first four excited states of singly ionized Co. Our analyses of the Rydberg series yield 63564.689 0.036 cm^-1 as the first ionization potential of Co, which is an order of magnitude more accurate than the previous estimation. Using a three-step resonance ionization scheme that employs an autoinizing Rydberg state in the last transition, we obtained an overall ionization efficiency of about 18% for Co.

Authors:

Liu, Yuan ^[1]; Gottwald, T. ^[2]; Mattolat, C. ^[2]; Wendt, K. ^[2]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physic Division
Johannes Gutenberg Univ., Mainz (Germany). Inst for Physics

Publication Date:: 2017-03-20

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1361301

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Physics. B, Atomic, Molecular and Optical Physics

Additional Journal Information:: Journal Volume: 50; Journal Issue: 7; Journal ID: ISSN 0953-4075

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 74 ATOMIC AND MOLECULAR PHYSICS; resonant ionization; cobalt; Ti:sapphire laser; laser ion source; Rydberg state; autoionizing

Citation Formats


                    Liu, Yuan, Gottwald, T., Mattolat, C., and Wendt, K. Resonant ionization spectroscopy of autoionizing Rydberg states in cobalt and redetermination of its ionization potential.  United States: N. p., 2017. 
Web.  doi:10.1088/1361-6455/aa58d0.

Copy to clipboard


                    Liu, Yuan, Gottwald, T., Mattolat, C., & Wendt, K. Resonant ionization spectroscopy of autoionizing Rydberg states in cobalt and redetermination of its ionization potential.  United States.  https://doi.org/10.1088/1361-6455/aa58d0

Copy to clipboard


                    Liu, Yuan, Gottwald, T., Mattolat, C., and Wendt, K. Mon .  
"Resonant ionization spectroscopy of autoionizing Rydberg states in cobalt and redetermination of its ionization potential".  United States.  https://doi.org/10.1088/1361-6455/aa58d0.  https://www.osti.gov/servlets/purl/1361301.

Copy to clipboard


                    
@article{osti_1361301,

  title        = {Resonant ionization spectroscopy of autoionizing Rydberg states in cobalt and redetermination of its ionization potential},

  author       = {Liu, Yuan and Gottwald, T. and Mattolat, C. and Wendt, K.},

  abstractNote = {We obtained multi-step resonance ionization spectroscopy of cobalt using a hot-cavity laser ion source and three Ti:Sapphire lasers. Furthermore, the photoionization spectra revealed members of five new autoionizing Rydberg series that originate from three different lower levels of 3d74s5s h4F9/2, 3d74s4d f4G11/2, and 3d74s4d f4H13/2 and converge to the first four excited states of singly ionized Co. Our analyses of the Rydberg series yield 63564.689 0.036 cm-1 as the first ionization potential of Co, which is an order of magnitude more accurate than the previous estimation. Using a three-step resonance ionization scheme that employs an autoinizing Rydberg state in the last transition, we obtained an overall ionization efficiency of about 18% for Co.},

  doi          = {10.1088/1361-6455/aa58d0},

  journal      = {Journal of Physics. B, Atomic, Molecular and Optical Physics},

  number       = 7,

  volume       = 50,

  place        = {United States},

  year         = {2017},

  month        = {3}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1088/1361-6455/aa58d0

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 1 work

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Three-photon resonance ionization of atomic Mn in a hot-cavity laser ion source using Ti:sapphire lasers

Journal Article Liu, Y. ; Gottwald, T. ; Mattolat, C. ; ... - Journal of Physics. B, Atomic, Molecular and Optical Physics

Three-photon resonance ionization of atomic manganese (Mn) in a hot-cavity ion source using Ti:sapphire lasers has been demonstrated. Three-step ionization schemes employing different intermediate levels and Rydberg or autoionizing (AI) states in the final ionization step are established. Strong AI resonances were observed via the 3d⁵4s5s f⁶S_5/2 level at 49 415.35 cm^-1, while Rydberg transitions were reached from the 3d⁵4s4d e ⁶D_9/2,7/2,5/2 levels at around 47 210 cm^-1. Analyses of the strong Rydberg transitions associated with the 3d⁵4s4d e ⁶D_7/2 lower level indicate that they belong to the dipole-allowed 4d→nf ⁶F° _9/2,7/2,5/2series converging to the 3d⁵4s ⁷S₃ ground statemore »« less
https://doi.org/10.1088/0953-4075/48/11/115006

Full Text Available
Three-photon resonance ionization of atomic Mn in a hot-cavity laser ion source using Ti:sapphire lasers

Journal Article Liu, Y. ; Gottwald, T. ; Mattolat, C. ; ... - Journal of Physics. B, Atomic, Molecular and Optical Physics

We have demonstrated three-photon resonance ionization of atomic manganese (Mn) in a hot-cavity ion source using Ti: sapphire lasers. Three-step ionization schemes employing different intermediate levels and Rydberg or autoionizing (AI) states in the final ionization step are established. Strong AI resonances were observed via the 3d⁵4s5s f⁶S^5/2level at 49 415.35 cm^-1, while Rydberg transitions were reached from the 3d⁵4s4d e ⁶D_9/2,7/2,5/2) levels at around 47 210 cm^-1. Analyses of the strong Rydberg transitions associated with the 3d⁵4s4d e ⁶D_7/2 lower level indicate that they belong to the dipole-allowed 4d → nf⁶F°_9/2,7/2,5/2 series converging to the 3d⁵4s ⁷S₃ groundmore »« less
https://doi.org/10.1088/0953-4075/48/11/115006

Full Text Available
A high-resolution vacuum ultraviolet laser photoionization and photoelectron study of the Co atom

Journal Article Huang, Huang ; Wang, Hailing ; Luo, Zhihong ; ... - Astrophysical Journal

We have measured the vacuum ultraviolet–photoionization efficiency (VUV–PIE) spectrum of Co in the energy range of 63,500–67,000 cm{sup −1}, which covers the photoionization transitions of Co(3d{sup 7}4s{sup 2 4}F{sub 9/2}) → Co{sup +}(3d{sup 8 3}F{sub 4}), Co(3d{sup 7}4s{sup 2 4}F{sub 7/2}) → Co{sup +}(3d{sup 8 3}F{sub 3}), Co(3d{sup 7}4s{sup 2 4}F{sub 9/2}) → Co{sup +}(3d{sup 8 3}F{sub 3}), Co(3d{sup 7}4s{sup 2 4}F{sub 9/2}) → Co{sup +}(3d{sup 8 3}F{sub 2}), and Co(3d{sup 7}4s{sup 2 4}F{sub 9/2}) → Co{sup +}(3d{sup 7}4s{sup 1 5}F{sub 5}). We have also recorded the pulsed field ionization photoelectron spectrum of Co in the same energy range, allowingmore »« less
https://doi.org/10.3847/1538-4357/833/2/205
Odd-parity J=11/2 autoionizing Rydberg series of europium below the 5d {sup 9}D{sub 4} threshold: Spectroscopy and multichannel quantum-defect-theory analysis

Journal Article Bhattacharyya, S ; Razvi, M A. N. ; Nakhate, S G ; ... - Physical Review. A

The odd-parity J=11/2 autoionizing states of europium atom below the 5d {sup 9}D{sub 4} threshold are investigated by a two-step laser photoionization scheme via the 4f{sup 7}5d6p {sup 10}F{sub 9/2} intermediate state. The observed resonances are classified into two autoionizing Rydberg series (with n=15 to 55) converging to the 5d {sup 9}D{sub 4} limit and eight members (n=13 to 20) of two autoionizing Rydberg series converging to the higher 5d {sup 9}D{sub 5} limit. The single series converging to the 5d {sup 9}D{sub 3} limit is not efficiently excited. The observed four Rydberg series are assigned in jj coupling asmore »« less
https://doi.org/10.1103/PHYSREVA.76.012502
Rydberg and autoionizing states of tellurium studied by laser resonance ionization spectroscopy

Journal Article Li, R. ; Liu, Y. ; Mostamand, M. ; ... - Physical Review A

Multistep laser-resonance-ionization spectroscopy of tellurium (Te) has been performed at TRIUMF's off-line laser ion source test stand. Six clean and regular even-parity Rydberg seriesmore »« less
https://doi.org/10.1103/physreva.100.052510

Full Text Available

Similar Records