Abstract

Radiative lifetimes have been reported for 32 odd-parity levels of neutral lanthanum using a time-resolved laser-induced fluorescence technique in an atomic beam produced by laser ablation. The energies of these levels are in the range of 23,874 to 37,982 cm1. Among the measured results, to the best of our knowledge, 23 lifetimes are reported for the first time. These lifetime values obtained in this paper, generally with uncertainties less than ±10%, are in the range of 7.3 to 247ns. These results are in good agreement with previously reported data within the experimental errors.

© 2011 Optical Society of America

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  1. E. Biémont and P. Quinet, “Recent advances in the study of lanthanide atoms and ions,” Phys. Scr. T105, 38–54 (2003).
    [CrossRef]
  2. J. J. Curry, E. A. Den Hartog, and J. E. Lawler, “Radiative lifetimes of Dy I and Dy II,” J. Opt. Soc. Am. B 14, 2788–2799 (1997).
    [CrossRef]
  3. G. Del Zanna, K. A. Berrington, and H. E. Mason, “Benchmarking atomic data for astrophysics: Fe X,” Astron. Astrophys. 422, 731–749 (2004).
    [CrossRef]
  4. W. J. Liu and M. Dolg, “Benchmark calculations for lanthanide atoms: calibration of ab initio and density-functional methods,” Phys. Rev. A 57, 1721–1728 (1998).
    [CrossRef]
  5. C. H. Corliss and W. R. Bozman, Experimental Transition Probabilities for Spectral Lines of Seventy Elements, Vol.  53 of U.S. National Bureau of Standards Monograph (U.S. Government Printing Office, 1962), pp. 168–173.
  6. P. S. Doidge, “A compendium and critical review of neutral atom resonance line oscillator strengths for atomic absorption analysis,” Spectrochim. Acta B 50, 209–263 (1995).
    [CrossRef]
  7. A. Hese, “Experimentelle untersuchung der 5d6s6pzF25/2,7/2-Terme im Lanthan I-Spektrum unter Verwendung von Levelcrossing-Spektroskopie,” Z. Phys. 236, 42–51(1970).
    [CrossRef]
  8. A. Hese, G. Büldt, “Hyperfeinstruktur, Stark-Effekt und Lebensdauern in den angeregten 5d6s6pyD23/2,5/2-Zuständen des Lanthan I-Spektrums,” Z. Naturforsch. A 25, 1537–1545 (1970).
  9. A. Hese, H. P. Weise, “Optische doppelresonanzuntersuchung der 5d6s6pzF2-terme im lanthan I-spektrum,” Z. Angew. Phys. 30, 170–174 (1970).
  10. N. P. Penkin, V. N. Gorshkov, V. A. Komarovskii, “Radiative lifetimes of excited La I levels,” Opt. Spectrosc. 58, 840–841 (1985).
  11. B. R. Bulos, A. J. Glassman, R. Gupta, G. W. Moe, “Measurement of the lifetimes of the z F5/22, z D3/22, z G5/24 and y D3/22 states of lanthanum,” J. Opt. Soc. Am. 68, 842–845 (1978).
    [CrossRef]
  12. E. Biémont, P. Quinet, S. Svanberg, and H. L. Xu, “Lifetime measurements and calculations in La I,” Eur. Phys. J. D 30, 157–162(2004).
    [CrossRef]
  13. Y. Y. Feng, W. Zhang, L. L. Ning, B. Kuang, G. J. Sun, and Z. W. Dai, “Radiative lifetime measurements of odd-parity levels of Tb I by time-resolved laser spectroscopy,” J. Phys. B 43, 225001 (2010).
    [CrossRef]
  14. Z. G. Zhang, S. Svanberg, P. Quinet, P. Palmeri, and E. Biémont, “Time-resolved laser spectroscopy of multiply ionized atoms: natural radiative lifetimes in Ce IV,” Phys. Rev. Lett. 87, 273001 (2001).
    [CrossRef]
  15. P. Palmeri, P. Quinet, V. Fivet, E. Biémont, C. R. Cowley, L. Engström, H. Lundberg, H. Hartman, and H. Nilsson, “Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III,” J. Phys. B 42, 165005 (2009).
    [CrossRef]
  16. J. Larsson, “VUV laser spectroscopy,” Phys. Scr. 49, 173–179(1994).
    [CrossRef]
  17. W. Zhang, P. Palmeri, P. Quinet, E. Biémont, S. Du, and Z. W. Dai, “Radiative-lifetime measurements and calculations of odd-parity highly excited levels in Ba I,” Phys. Rev. A 82, 042507 (2010).
    [CrossRef]
  18. W. C. Martin, R. Zalubas, and L. Hagan, Atomic Energy Levels—The Rare-Earth Elements, Vol.  60 of National Standard Reference Data Series, National Bureau of Standards (U.S. Department of Commerce, National Bureau of Standards, 1978), pp. 29–35.

2010

Y. Y. Feng, W. Zhang, L. L. Ning, B. Kuang, G. J. Sun, and Z. W. Dai, “Radiative lifetime measurements of odd-parity levels of Tb I by time-resolved laser spectroscopy,” J. Phys. B 43, 225001 (2010).
[CrossRef]

W. Zhang, P. Palmeri, P. Quinet, E. Biémont, S. Du, and Z. W. Dai, “Radiative-lifetime measurements and calculations of odd-parity highly excited levels in Ba I,” Phys. Rev. A 82, 042507 (2010).
[CrossRef]

2009

P. Palmeri, P. Quinet, V. Fivet, E. Biémont, C. R. Cowley, L. Engström, H. Lundberg, H. Hartman, and H. Nilsson, “Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III,” J. Phys. B 42, 165005 (2009).
[CrossRef]

2004

E. Biémont, P. Quinet, S. Svanberg, and H. L. Xu, “Lifetime measurements and calculations in La I,” Eur. Phys. J. D 30, 157–162(2004).
[CrossRef]

G. Del Zanna, K. A. Berrington, and H. E. Mason, “Benchmarking atomic data for astrophysics: Fe X,” Astron. Astrophys. 422, 731–749 (2004).
[CrossRef]

2003

E. Biémont and P. Quinet, “Recent advances in the study of lanthanide atoms and ions,” Phys. Scr. T105, 38–54 (2003).
[CrossRef]

2001

Z. G. Zhang, S. Svanberg, P. Quinet, P. Palmeri, and E. Biémont, “Time-resolved laser spectroscopy of multiply ionized atoms: natural radiative lifetimes in Ce IV,” Phys. Rev. Lett. 87, 273001 (2001).
[CrossRef]

1998

W. J. Liu and M. Dolg, “Benchmark calculations for lanthanide atoms: calibration of ab initio and density-functional methods,” Phys. Rev. A 57, 1721–1728 (1998).
[CrossRef]

1997

1995

P. S. Doidge, “A compendium and critical review of neutral atom resonance line oscillator strengths for atomic absorption analysis,” Spectrochim. Acta B 50, 209–263 (1995).
[CrossRef]

1994

J. Larsson, “VUV laser spectroscopy,” Phys. Scr. 49, 173–179(1994).
[CrossRef]

1985

N. P. Penkin, V. N. Gorshkov, V. A. Komarovskii, “Radiative lifetimes of excited La I levels,” Opt. Spectrosc. 58, 840–841 (1985).

1978

1970

A. Hese, “Experimentelle untersuchung der 5d6s6pzF25/2,7/2-Terme im Lanthan I-Spektrum unter Verwendung von Levelcrossing-Spektroskopie,” Z. Phys. 236, 42–51(1970).
[CrossRef]

A. Hese, G. Büldt, “Hyperfeinstruktur, Stark-Effekt und Lebensdauern in den angeregten 5d6s6pyD23/2,5/2-Zuständen des Lanthan I-Spektrums,” Z. Naturforsch. A 25, 1537–1545 (1970).

A. Hese, H. P. Weise, “Optische doppelresonanzuntersuchung der 5d6s6pzF2-terme im lanthan I-spektrum,” Z. Angew. Phys. 30, 170–174 (1970).

Berrington, K. A.

G. Del Zanna, K. A. Berrington, and H. E. Mason, “Benchmarking atomic data for astrophysics: Fe X,” Astron. Astrophys. 422, 731–749 (2004).
[CrossRef]

Biémont, E.

W. Zhang, P. Palmeri, P. Quinet, E. Biémont, S. Du, and Z. W. Dai, “Radiative-lifetime measurements and calculations of odd-parity highly excited levels in Ba I,” Phys. Rev. A 82, 042507 (2010).
[CrossRef]

P. Palmeri, P. Quinet, V. Fivet, E. Biémont, C. R. Cowley, L. Engström, H. Lundberg, H. Hartman, and H. Nilsson, “Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III,” J. Phys. B 42, 165005 (2009).
[CrossRef]

E. Biémont, P. Quinet, S. Svanberg, and H. L. Xu, “Lifetime measurements and calculations in La I,” Eur. Phys. J. D 30, 157–162(2004).
[CrossRef]

E. Biémont and P. Quinet, “Recent advances in the study of lanthanide atoms and ions,” Phys. Scr. T105, 38–54 (2003).
[CrossRef]

Z. G. Zhang, S. Svanberg, P. Quinet, P. Palmeri, and E. Biémont, “Time-resolved laser spectroscopy of multiply ionized atoms: natural radiative lifetimes in Ce IV,” Phys. Rev. Lett. 87, 273001 (2001).
[CrossRef]

Bozman, W. R.

C. H. Corliss and W. R. Bozman, Experimental Transition Probabilities for Spectral Lines of Seventy Elements, Vol.  53 of U.S. National Bureau of Standards Monograph (U.S. Government Printing Office, 1962), pp. 168–173.

Büldt, G.

A. Hese, G. Büldt, “Hyperfeinstruktur, Stark-Effekt und Lebensdauern in den angeregten 5d6s6pyD23/2,5/2-Zuständen des Lanthan I-Spektrums,” Z. Naturforsch. A 25, 1537–1545 (1970).

Bulos, B. R.

Corliss, C. H.

C. H. Corliss and W. R. Bozman, Experimental Transition Probabilities for Spectral Lines of Seventy Elements, Vol.  53 of U.S. National Bureau of Standards Monograph (U.S. Government Printing Office, 1962), pp. 168–173.

Cowley, C. R.

P. Palmeri, P. Quinet, V. Fivet, E. Biémont, C. R. Cowley, L. Engström, H. Lundberg, H. Hartman, and H. Nilsson, “Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III,” J. Phys. B 42, 165005 (2009).
[CrossRef]

Curry, J. J.

Dai, Z. W.

Y. Y. Feng, W. Zhang, L. L. Ning, B. Kuang, G. J. Sun, and Z. W. Dai, “Radiative lifetime measurements of odd-parity levels of Tb I by time-resolved laser spectroscopy,” J. Phys. B 43, 225001 (2010).
[CrossRef]

W. Zhang, P. Palmeri, P. Quinet, E. Biémont, S. Du, and Z. W. Dai, “Radiative-lifetime measurements and calculations of odd-parity highly excited levels in Ba I,” Phys. Rev. A 82, 042507 (2010).
[CrossRef]

Del Zanna, G.

G. Del Zanna, K. A. Berrington, and H. E. Mason, “Benchmarking atomic data for astrophysics: Fe X,” Astron. Astrophys. 422, 731–749 (2004).
[CrossRef]

Den Hartog, E. A.

Doidge, P. S.

P. S. Doidge, “A compendium and critical review of neutral atom resonance line oscillator strengths for atomic absorption analysis,” Spectrochim. Acta B 50, 209–263 (1995).
[CrossRef]

Dolg, M.

W. J. Liu and M. Dolg, “Benchmark calculations for lanthanide atoms: calibration of ab initio and density-functional methods,” Phys. Rev. A 57, 1721–1728 (1998).
[CrossRef]

Du, S.

W. Zhang, P. Palmeri, P. Quinet, E. Biémont, S. Du, and Z. W. Dai, “Radiative-lifetime measurements and calculations of odd-parity highly excited levels in Ba I,” Phys. Rev. A 82, 042507 (2010).
[CrossRef]

Engström, L.

P. Palmeri, P. Quinet, V. Fivet, E. Biémont, C. R. Cowley, L. Engström, H. Lundberg, H. Hartman, and H. Nilsson, “Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III,” J. Phys. B 42, 165005 (2009).
[CrossRef]

Feng, Y. Y.

Y. Y. Feng, W. Zhang, L. L. Ning, B. Kuang, G. J. Sun, and Z. W. Dai, “Radiative lifetime measurements of odd-parity levels of Tb I by time-resolved laser spectroscopy,” J. Phys. B 43, 225001 (2010).
[CrossRef]

Fivet, V.

P. Palmeri, P. Quinet, V. Fivet, E. Biémont, C. R. Cowley, L. Engström, H. Lundberg, H. Hartman, and H. Nilsson, “Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III,” J. Phys. B 42, 165005 (2009).
[CrossRef]

Glassman, A. J.

Gorshkov, V. N.

N. P. Penkin, V. N. Gorshkov, V. A. Komarovskii, “Radiative lifetimes of excited La I levels,” Opt. Spectrosc. 58, 840–841 (1985).

Gupta, R.

Hagan, L.

W. C. Martin, R. Zalubas, and L. Hagan, Atomic Energy Levels—The Rare-Earth Elements, Vol.  60 of National Standard Reference Data Series, National Bureau of Standards (U.S. Department of Commerce, National Bureau of Standards, 1978), pp. 29–35.

Hartman, H.

P. Palmeri, P. Quinet, V. Fivet, E. Biémont, C. R. Cowley, L. Engström, H. Lundberg, H. Hartman, and H. Nilsson, “Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III,” J. Phys. B 42, 165005 (2009).
[CrossRef]

Hese, A.

A. Hese, H. P. Weise, “Optische doppelresonanzuntersuchung der 5d6s6pzF2-terme im lanthan I-spektrum,” Z. Angew. Phys. 30, 170–174 (1970).

A. Hese, “Experimentelle untersuchung der 5d6s6pzF25/2,7/2-Terme im Lanthan I-Spektrum unter Verwendung von Levelcrossing-Spektroskopie,” Z. Phys. 236, 42–51(1970).
[CrossRef]

A. Hese, G. Büldt, “Hyperfeinstruktur, Stark-Effekt und Lebensdauern in den angeregten 5d6s6pyD23/2,5/2-Zuständen des Lanthan I-Spektrums,” Z. Naturforsch. A 25, 1537–1545 (1970).

Komarovskii, V. A.

N. P. Penkin, V. N. Gorshkov, V. A. Komarovskii, “Radiative lifetimes of excited La I levels,” Opt. Spectrosc. 58, 840–841 (1985).

Kuang, B.

Y. Y. Feng, W. Zhang, L. L. Ning, B. Kuang, G. J. Sun, and Z. W. Dai, “Radiative lifetime measurements of odd-parity levels of Tb I by time-resolved laser spectroscopy,” J. Phys. B 43, 225001 (2010).
[CrossRef]

Larsson, J.

J. Larsson, “VUV laser spectroscopy,” Phys. Scr. 49, 173–179(1994).
[CrossRef]

Lawler, J. E.

Liu, W. J.

W. J. Liu and M. Dolg, “Benchmark calculations for lanthanide atoms: calibration of ab initio and density-functional methods,” Phys. Rev. A 57, 1721–1728 (1998).
[CrossRef]

Lundberg, H.

P. Palmeri, P. Quinet, V. Fivet, E. Biémont, C. R. Cowley, L. Engström, H. Lundberg, H. Hartman, and H. Nilsson, “Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III,” J. Phys. B 42, 165005 (2009).
[CrossRef]

Martin, W. C.

W. C. Martin, R. Zalubas, and L. Hagan, Atomic Energy Levels—The Rare-Earth Elements, Vol.  60 of National Standard Reference Data Series, National Bureau of Standards (U.S. Department of Commerce, National Bureau of Standards, 1978), pp. 29–35.

Mason, H. E.

G. Del Zanna, K. A. Berrington, and H. E. Mason, “Benchmarking atomic data for astrophysics: Fe X,” Astron. Astrophys. 422, 731–749 (2004).
[CrossRef]

Moe, G. W.

Nilsson, H.

P. Palmeri, P. Quinet, V. Fivet, E. Biémont, C. R. Cowley, L. Engström, H. Lundberg, H. Hartman, and H. Nilsson, “Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III,” J. Phys. B 42, 165005 (2009).
[CrossRef]

Ning, L. L.

Y. Y. Feng, W. Zhang, L. L. Ning, B. Kuang, G. J. Sun, and Z. W. Dai, “Radiative lifetime measurements of odd-parity levels of Tb I by time-resolved laser spectroscopy,” J. Phys. B 43, 225001 (2010).
[CrossRef]

Palmeri, P.

W. Zhang, P. Palmeri, P. Quinet, E. Biémont, S. Du, and Z. W. Dai, “Radiative-lifetime measurements and calculations of odd-parity highly excited levels in Ba I,” Phys. Rev. A 82, 042507 (2010).
[CrossRef]

P. Palmeri, P. Quinet, V. Fivet, E. Biémont, C. R. Cowley, L. Engström, H. Lundberg, H. Hartman, and H. Nilsson, “Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III,” J. Phys. B 42, 165005 (2009).
[CrossRef]

Z. G. Zhang, S. Svanberg, P. Quinet, P. Palmeri, and E. Biémont, “Time-resolved laser spectroscopy of multiply ionized atoms: natural radiative lifetimes in Ce IV,” Phys. Rev. Lett. 87, 273001 (2001).
[CrossRef]

Penkin, N. P.

N. P. Penkin, V. N. Gorshkov, V. A. Komarovskii, “Radiative lifetimes of excited La I levels,” Opt. Spectrosc. 58, 840–841 (1985).

Quinet, P.

W. Zhang, P. Palmeri, P. Quinet, E. Biémont, S. Du, and Z. W. Dai, “Radiative-lifetime measurements and calculations of odd-parity highly excited levels in Ba I,” Phys. Rev. A 82, 042507 (2010).
[CrossRef]

P. Palmeri, P. Quinet, V. Fivet, E. Biémont, C. R. Cowley, L. Engström, H. Lundberg, H. Hartman, and H. Nilsson, “Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III,” J. Phys. B 42, 165005 (2009).
[CrossRef]

E. Biémont, P. Quinet, S. Svanberg, and H. L. Xu, “Lifetime measurements and calculations in La I,” Eur. Phys. J. D 30, 157–162(2004).
[CrossRef]

E. Biémont and P. Quinet, “Recent advances in the study of lanthanide atoms and ions,” Phys. Scr. T105, 38–54 (2003).
[CrossRef]

Z. G. Zhang, S. Svanberg, P. Quinet, P. Palmeri, and E. Biémont, “Time-resolved laser spectroscopy of multiply ionized atoms: natural radiative lifetimes in Ce IV,” Phys. Rev. Lett. 87, 273001 (2001).
[CrossRef]

Sun, G. J.

Y. Y. Feng, W. Zhang, L. L. Ning, B. Kuang, G. J. Sun, and Z. W. Dai, “Radiative lifetime measurements of odd-parity levels of Tb I by time-resolved laser spectroscopy,” J. Phys. B 43, 225001 (2010).
[CrossRef]

Svanberg, S.

E. Biémont, P. Quinet, S. Svanberg, and H. L. Xu, “Lifetime measurements and calculations in La I,” Eur. Phys. J. D 30, 157–162(2004).
[CrossRef]

Z. G. Zhang, S. Svanberg, P. Quinet, P. Palmeri, and E. Biémont, “Time-resolved laser spectroscopy of multiply ionized atoms: natural radiative lifetimes in Ce IV,” Phys. Rev. Lett. 87, 273001 (2001).
[CrossRef]

Weise, H. P.

A. Hese, H. P. Weise, “Optische doppelresonanzuntersuchung der 5d6s6pzF2-terme im lanthan I-spektrum,” Z. Angew. Phys. 30, 170–174 (1970).

Xu, H. L.

E. Biémont, P. Quinet, S. Svanberg, and H. L. Xu, “Lifetime measurements and calculations in La I,” Eur. Phys. J. D 30, 157–162(2004).
[CrossRef]

Zalubas, R.

W. C. Martin, R. Zalubas, and L. Hagan, Atomic Energy Levels—The Rare-Earth Elements, Vol.  60 of National Standard Reference Data Series, National Bureau of Standards (U.S. Department of Commerce, National Bureau of Standards, 1978), pp. 29–35.

Zhang, W.

W. Zhang, P. Palmeri, P. Quinet, E. Biémont, S. Du, and Z. W. Dai, “Radiative-lifetime measurements and calculations of odd-parity highly excited levels in Ba I,” Phys. Rev. A 82, 042507 (2010).
[CrossRef]

Y. Y. Feng, W. Zhang, L. L. Ning, B. Kuang, G. J. Sun, and Z. W. Dai, “Radiative lifetime measurements of odd-parity levels of Tb I by time-resolved laser spectroscopy,” J. Phys. B 43, 225001 (2010).
[CrossRef]

Zhang, Z. G.

Z. G. Zhang, S. Svanberg, P. Quinet, P. Palmeri, and E. Biémont, “Time-resolved laser spectroscopy of multiply ionized atoms: natural radiative lifetimes in Ce IV,” Phys. Rev. Lett. 87, 273001 (2001).
[CrossRef]

Astron. Astrophys.

G. Del Zanna, K. A. Berrington, and H. E. Mason, “Benchmarking atomic data for astrophysics: Fe X,” Astron. Astrophys. 422, 731–749 (2004).
[CrossRef]

Eur. Phys. J. D

E. Biémont, P. Quinet, S. Svanberg, and H. L. Xu, “Lifetime measurements and calculations in La I,” Eur. Phys. J. D 30, 157–162(2004).
[CrossRef]

J. Opt. Soc. Am.

J. Opt. Soc. Am. B

J. Phys. B

Y. Y. Feng, W. Zhang, L. L. Ning, B. Kuang, G. J. Sun, and Z. W. Dai, “Radiative lifetime measurements of odd-parity levels of Tb I by time-resolved laser spectroscopy,” J. Phys. B 43, 225001 (2010).
[CrossRef]

P. Palmeri, P. Quinet, V. Fivet, E. Biémont, C. R. Cowley, L. Engström, H. Lundberg, H. Hartman, and H. Nilsson, “Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III,” J. Phys. B 42, 165005 (2009).
[CrossRef]

Opt. Spectrosc.

N. P. Penkin, V. N. Gorshkov, V. A. Komarovskii, “Radiative lifetimes of excited La I levels,” Opt. Spectrosc. 58, 840–841 (1985).

Phys. Rev. A

W. Zhang, P. Palmeri, P. Quinet, E. Biémont, S. Du, and Z. W. Dai, “Radiative-lifetime measurements and calculations of odd-parity highly excited levels in Ba I,” Phys. Rev. A 82, 042507 (2010).
[CrossRef]

W. J. Liu and M. Dolg, “Benchmark calculations for lanthanide atoms: calibration of ab initio and density-functional methods,” Phys. Rev. A 57, 1721–1728 (1998).
[CrossRef]

Phys. Rev. Lett.

Z. G. Zhang, S. Svanberg, P. Quinet, P. Palmeri, and E. Biémont, “Time-resolved laser spectroscopy of multiply ionized atoms: natural radiative lifetimes in Ce IV,” Phys. Rev. Lett. 87, 273001 (2001).
[CrossRef]

Phys. Scr.

J. Larsson, “VUV laser spectroscopy,” Phys. Scr. 49, 173–179(1994).
[CrossRef]

E. Biémont and P. Quinet, “Recent advances in the study of lanthanide atoms and ions,” Phys. Scr. T105, 38–54 (2003).
[CrossRef]

Spectrochim. Acta B

P. S. Doidge, “A compendium and critical review of neutral atom resonance line oscillator strengths for atomic absorption analysis,” Spectrochim. Acta B 50, 209–263 (1995).
[CrossRef]

Z. Angew. Phys.

A. Hese, H. P. Weise, “Optische doppelresonanzuntersuchung der 5d6s6pzF2-terme im lanthan I-spektrum,” Z. Angew. Phys. 30, 170–174 (1970).

Z. Naturforsch. A

A. Hese, G. Büldt, “Hyperfeinstruktur, Stark-Effekt und Lebensdauern in den angeregten 5d6s6pyD23/2,5/2-Zuständen des Lanthan I-Spektrums,” Z. Naturforsch. A 25, 1537–1545 (1970).

Z. Phys.

A. Hese, “Experimentelle untersuchung der 5d6s6pzF25/2,7/2-Terme im Lanthan I-Spektrum unter Verwendung von Levelcrossing-Spektroskopie,” Z. Phys. 236, 42–51(1970).
[CrossRef]

Other

C. H. Corliss and W. R. Bozman, Experimental Transition Probabilities for Spectral Lines of Seventy Elements, Vol.  53 of U.S. National Bureau of Standards Monograph (U.S. Government Printing Office, 1962), pp. 168–173.

W. C. Martin, R. Zalubas, and L. Hagan, Atomic Energy Levels—The Rare-Earth Elements, Vol.  60 of National Standard Reference Data Series, National Bureau of Standards (U.S. Department of Commerce, National Bureau of Standards, 1978), pp. 29–35.

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Figures (2)

Fig. 1
Fig. 1

Typical fluorescence decay curve for the 28,506.41 cm 1 level together with a laser pulse and a fitted curve (a convolution of the laser pulse and an exponential with a decay constant of 7.9 ns ).

Fig. 2
Fig. 2

Typical fluorescence decay curve for the 24,088.54 cm 1 level with an exponential fit for lifetime evaluation.

Tables (1)

Tables Icon

Table 1 Measured Lifetimes of 32 Odd-Parity Levels in La I with the Excitation Schemes

Metrics