Laser studies of the decay chain of metastable antiprotonic helium atoms

R. S. Hayano, F. E. Maas, H. A. Torii, N. Morita, M. Kumakura, T. Yamazaki, H. Masuda, I. Sugai, F. J. Hartmann, H. Daniel, T. Von Egidy, B. Ketzer, W. Müller, W. Schmid, D. Horváth, J. Eades, E. Widmann

Research output: Article

75 Citations (Scopus)

Abstract

Laser studies of metastable antiprotonic helium atoms, which we recently initiated by observing a sharp increase of the antiproton annihilation rate induced by laser-stimulated resonant transitions, have been extended. With a single laser tuned to the resonance already found at 597.26 nm, we have now established the time dependence of the upper state population. With two lasers ignited at variable time separation, we also studied the feeding of the upper state from higher atomic levels. The initial populations and level lifetimes of excited exotic atoms were determined.

Original languageEnglish
Pages (from-to)1485-1488
Number of pages4
JournalPhysical Review Letters
Volume73
Issue number11
DOIs
Publication statusPublished - 1994

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metastable atoms
helium atoms
decay
lasers
antiprotons
time dependence
life (durability)
atoms

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Hayano, R. S., Maas, F. E., Torii, H. A., Morita, N., Kumakura, M., Yamazaki, T., ... Widmann, E. (1994). Laser studies of the decay chain of metastable antiprotonic helium atoms. Physical Review Letters, 73(11), 1485-1488. https://doi.org/10.1103/PhysRevLett.73.1485

Laser studies of the decay chain of metastable antiprotonic helium atoms. / Hayano, R. S.; Maas, F. E.; Torii, H. A.; Morita, N.; Kumakura, M.; Yamazaki, T.; Masuda, H.; Sugai, I.; Hartmann, F. J.; Daniel, H.; Von Egidy, T.; Ketzer, B.; Müller, W.; Schmid, W.; Horváth, D.; Eades, J.; Widmann, E.

In: Physical Review Letters, Vol. 73, No. 11, 1994, p. 1485-1488.

Research output: Article

Hayano, RS, Maas, FE, Torii, HA, Morita, N, Kumakura, M, Yamazaki, T, Masuda, H, Sugai, I, Hartmann, FJ, Daniel, H, Von Egidy, T, Ketzer, B, Müller, W, Schmid, W, Horváth, D, Eades, J & Widmann, E 1994, 'Laser studies of the decay chain of metastable antiprotonic helium atoms', Physical Review Letters, vol. 73, no. 11, pp. 1485-1488. https://doi.org/10.1103/PhysRevLett.73.1485
Hayano RS, Maas FE, Torii HA, Morita N, Kumakura M, Yamazaki T et al. Laser studies of the decay chain of metastable antiprotonic helium atoms. Physical Review Letters. 1994;73(11):1485-1488. https://doi.org/10.1103/PhysRevLett.73.1485
Hayano, R. S. ; Maas, F. E. ; Torii, H. A. ; Morita, N. ; Kumakura, M. ; Yamazaki, T. ; Masuda, H. ; Sugai, I. ; Hartmann, F. J. ; Daniel, H. ; Von Egidy, T. ; Ketzer, B. ; Müller, W. ; Schmid, W. ; Horváth, D. ; Eades, J. ; Widmann, E. / Laser studies of the decay chain of metastable antiprotonic helium atoms. In: Physical Review Letters. 1994 ; Vol. 73, No. 11. pp. 1485-1488.
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AU - Maas, F. E.

AU - Torii, H. A.

AU - Morita, N.

AU - Kumakura, M.

AU - Yamazaki, T.

AU - Masuda, H.

AU - Sugai, I.

AU - Hartmann, F. J.

AU - Daniel, H.

AU - Von Egidy, T.

AU - Ketzer, B.

AU - Müller, W.

AU - Schmid, W.

AU - Horváth, D.

AU - Eades, J.

AU - Widmann, E.

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