Isotope Ratio Biases in Resonance Ionization Mass Spectroscopy Due to Population Trapping

Abstract

Population trapping via hyperfine ground-state coherences is proposed as a potential source of isotope ratio bias in resonance ionization mass spectra with coherent excitation of the first transition. Sample calculations are presented for a model 4-leveI Doppler-broadened system and qualitatively verified by experimental fluorescence excitation measurements.

Keywords

Mass spectroscopy Resonance ionization

Get full access to this article

View all access options for this article.

References

Smith

D. H.

Young

J. P.

and Shaw

R. W

, Mass Spectr. Revs. 8, 345 (1989).

Donohue

D. L.

Smith

D. H.

Young

J. P.

McKown

H. S.

and Pritchard

C. A

, Anal. Chem. 56, 379 (1984).

Smith

D. H.

Donohue

D. L.

and Young

J. P

, Int. J. Mass Spectrom. Ion Proc. 65, 287 (1985).

Green

L. W.

Macdonald

R. G.

Sopchyshyn

F. C.

and Bonnell

L. J

, Inst. Phys. Conf. Ser., Vol. 84 (Reson. Ioniz. Spectrosc. 86), Hurst

G. S.

and Morgan

C. G

, Eds. (1986), p. 145.

Donohue

D. L.

Smith

D. H.

Young

J. P.

and Ramsey

J. M

, Inst. Phys. Conf. Ser., Vol. 71 (Reson. Ioniz. Spectrosc. 84), Hurst

G. S.

and Payne

M. G

, Eds. (1984), p. 83.

Bekov

G. I.

Zherikhin

A. N.

Letokhov

V. S.

Mishin

V. I.

and Fedoseev

V. N

, Pis'ma ZH. Eksp. Teor. Fiz. 33, 467 (1981) [JETP Lett. 33, 450 (1981)].

Fairbank

W. M.

Jr. Spaar

M. T.

Parks

J. E.

and Hutchinson

J. M

, Phys. Rev. A 40, 2195 (1989).

Lambropoulos

and Lyras

, Phys. Rev. A 40, 2199 (1989).

Alzetta

Gozzini

Moi

and Orriols

, Nuovo Cimento 36B, 5 (1976).

10.

Gray

H. R.

Whitley

R. M.

Stroud

C. R.

Jr. , Optics Lett. 3, 218 (1978).

11.

Feld

M. S.

Burns

M. M.

Pappas

P. G.

and Murnick

D. E

, Optics Lett. 5, 79 (1980).

12.

Arimondo

and Orriols

, Nuovo Cimento Lett. 17, 333 (1976).

13.

Dalton

B. J.

and Knight

P. L

, Optics Comm. 42, 411 (1982).

14.

Ekert

and Gawlik

, Phys. Lett. A 121, 175 (1987).

15.

Shore

B. W.

and Johnson

M. A

, Phys. Rev. A 23, 1608 (1981).

16.

Dick

and Hochstrasser

R. M

, Chem. Phys. 75, 133 (1983).

17.

Murnick

D. E.

Feld

M. S.

Burns

M. M.

Kuhl

T. U.

and Pappas

P. G

, in Laser Spectroscopy IV, Walter

and Rothe

K. W

, Eds. (Springer-Verlag, New York, 1979), p. 195.

18.

Whitley

R. M.

, Double Optical Resonance, doctoral dissertation, University of Rochester, New York (1977).

19.

Gawlik

and Zachorowski

, J. Phys. B 20, 5939 (1987).

20.

Harde

and Burggraf

, in Laser Spectroscopy VI, Weber

H. P.

and Luthy

, Eds. (Springer-Verlag, New York, 1983), p. 117.