OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 21, Iss. 7 — Jul. 1, 2004
  • pp: 1369–1378

Investigations on the 1S0 λ1→ 1P01 λ2→ 1S0 nonresonant——→ M+ photoionization pathway for selective ionization of rare calcium and strontium isotopes

Manda Sankari, Pragada V. Kiran Kumar, and Manda V. Suryanarayana  »View Author Affiliations


JOSA B, Vol. 21, Issue 7, pp. 1369-1378 (2004)
http://dx.doi.org/10.1364/JOSAB.21.001369


View Full Text Article

Acrobat PDF (239 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Optical selectivities have been calculated by use of the density matrix approach for ns2 1S0−nsnp 1P10− nsms (or np2) 1S0 double-resonance photoionization pathways to establish the possibility of selective ionization of rare calcium and strontium isotopes for continuous-wave laser excitation. Numerical integration of the density matrix equations for double-resonance ionization has been carried out by incorporation of the effects of Doppler broadening, velocity-dependent interaction times, time-varying Rabi frequencies, and laser bandwidths. The conditions for obtaining optimum selectivities have been evaluated. This study results in five new photoionization pathways (two for calcium and three for strontium) whose optical selectivities were found to be a few orders higher than the previously studied photoionization schemes. The effect of laser linewidth of the excitation lasers and Doppler width have also been investigated.

© 2004 Optical Society of America

OCIS Codes
(020.3260) Atomic and molecular physics : Isotope shifts
(020.3690) Atomic and molecular physics : Line shapes and shifts
(300.6210) Spectroscopy : Spectroscopy, atomic
(300.6360) Spectroscopy : Spectroscopy, laser

Citation
Manda Sankari, Pragada V. Kiran Kumar, and Manda V. Suryanarayana, "Investigations on the 1S0 λ1→ 1P01 λ2→ 1S0 nonresonant——→ M+ photoionization pathway for selective ionization of rare calcium and strontium isotopes," J. Opt. Soc. Am. B 21, 1369-1378 (2004)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-21-7-1369


Sort:  Author  |  Year  |  Journal  |  Reset

References

  1. K. D. A. Wendt, C. Geppert, M. Miyabe, P. Mueller, W. Noertershaeuser, and N. Trautmann, “Ultratrace isotope determination in environmental, bio-medical and fundamental research by high resolution laser-mass spectrometry,” J. Nucl. Sci. Technol. 39, 303–307 (2002).
  2. I. D. Moore, K. Bailey, Z.-T. Lu, P. Müller, T. P. O’Connor, and L. Young, “Towards ultrahigh sensitivity analysis of 41Ca,” Nucl. Instrum. Methods Phys. Res. B 204, 701–704 (2003).
  3. P. Muller, K. Blaum, B. A. Bushaw, S. Diel, Ch. Geppert, A. Nahler, W. Nortershauser, N. Trautmann, and K. Wendt, “Trace detection of 41Ca in nuclear reactor concrete by diode-laser-based resonance ionization mass spectrometry,” Radiochim. Acta 88, 487–493 (2000).
  4. M. Eisenbud, Environmental Radioactivity (Academic, Orlando, Fla., 1987).
  5. B. A. Bushaw and W. Nörtershäuser, “Resonance ionization spectroscopy of stable strontium isotopes and 90Sr via 5s21S0→λ15s5p 1P10→λ25s5d 1D2→λ35s11f 1F3→λ4Sr+,” Spectrochim. Acta, Part B 55, 1679–1692 (2000).
  6. B. A. Bushaw and B. D. Cannon, “Diode laser based resonance ionization mass spectrometric measurement of strontium-90,” Spectrochim. Acta, Part B 52, 1839–1854 (1997).
  7. B. A. Bushaw, W. Nörtershäuser, and K. Wendt, “Lineshapes and optical selectivity in high-resolution double-resonance ionization mass spectrometry,” Spectrochim. Acta, Part B 54, 321–332 (1999).
  8. W. Nörtershäuser, B. A. Bushaw, P. Müller, and K. Wendt, “Line shapes in triple-resonance ionization spectroscopy,” Appl. Opt. 39, 5590–5600 (2000).
  9. G. M. Raisbeck and F. Yiou, “Possible use of 41Ca for radioactive dating,” Nature 277, 42–44 (1979).
  10. W. C. Magno, R. L. Cavasso Filho, and F. C. Cruz, “Two-photon Doppler cooling of alkaline–earth–metal and ytterbium atoms,” Phys. Rev. A 67, 043407 (2003).
  11. P. Zoller and P. Lambropoulos, “Non-Lorentzian laser lineshapes in intense field-atom interaction,” J. Phys. B 12, L547–L551 (1979).
  12. H. G. C. Werij, C. H. Greene, C. E. Theodosiou, and A. Gallagher, “Oscillator strengths and radiative branching ratios in atomic Sr,” Phys. Rev. A 46, 1248–1260 (1992).
  13. R. L. Kurucz and B. Bell, 1995 Atomic Line Data Kurucz CD-ROM No. 23 (Smithsonian Astrophysical Observatory, Cambridge, Mass., 1995).
  14. W. H. King, Isotope Shifts in Atomic Spectra (Plenum, New York, 1984).
  15. F. Buchinger, R. Corriveau, E. B. Ramsey, D. Berdichevsky, and D. W. L. Sprung, “Influence of the N=50 shell closure on mean square charge radii of strontium,” Phys. Rev. C 32, 2058–2066 (1985).
  16. A. Aspect, J. Bauche, M. Godefroid, P. Grangier, J. E. Hansen, and N. Vaeck, “Experimental and MCHF isotope shifts of strongly perturbed levels in Ca I and Sr I,” J. Phys. B 24, 4077–4099 (1991).
  17. C.-J. Lorenzen, K. Niemax, and L. R. Pendrill, “Isotope shifts of energy levels in the naturally abundant isotopes of strontium and calcium,” Phys. Rev. A 28, 2051–2058 (1983).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited