Hyperfine structure of the metastable p̄He+ atomcule revealed by a laser-induced (n, l) = (37, 35) → (38, 34) transition

E. Widmann, J. Eades, T. Yamazaki, H. A. Torii, R. S. Hayano, M. Hori, T. Ishikawa, M. Kumakura, N. Morita, I. Sugai, F. J. Hartmann, T. Von Egidy, B. Ketzer, C. Maierl, R. Pohl, D. Horváth

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

A precise scan of the previously discovered laser-induced transition (n, l) = (37, 35) → (38, 34) in p̄He+ revealed a doublet structure with a separation of ΔνHF = 1.70 ± 0.05 GHz. This new type of "hyperfine" splitting is ascribed to the interaction of the antiproton orbital angular momentum and the electron spin.

Original languageEnglish
Pages (from-to)15-19
Number of pages5
JournalPhysics Letters B
Volume404
Issue number1-2
Publication statusPublished - Jul 3 1997

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antiprotons
hyperfine structure
electron spin
angular momentum
orbitals
lasers
interactions

Keywords

  • Antiprotonic helium
  • Atomcule
  • Exotic atom
  • Hyperfine splitting
  • Laser spectroscopy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Hyperfine structure of the metastable p̄He+ atomcule revealed by a laser-induced (n, l) = (37, 35) → (38, 34) transition. / Widmann, E.; Eades, J.; Yamazaki, T.; Torii, H. A.; Hayano, R. S.; Hori, M.; Ishikawa, T.; Kumakura, M.; Morita, N.; Sugai, I.; Hartmann, F. J.; Von Egidy, T.; Ketzer, B.; Maierl, C.; Pohl, R.; Horváth, D.

In: Physics Letters B, Vol. 404, No. 1-2, 03.07.1997, p. 15-19.

Research output: Contribution to journalArticle

Widmann, E, Eades, J, Yamazaki, T, Torii, HA, Hayano, RS, Hori, M, Ishikawa, T, Kumakura, M, Morita, N, Sugai, I, Hartmann, FJ, Von Egidy, T, Ketzer, B, Maierl, C, Pohl, R & Horváth, D 1997, 'Hyperfine structure of the metastable p̄He+ atomcule revealed by a laser-induced (n, l) = (37, 35) → (38, 34) transition', Physics Letters B, vol. 404, no. 1-2, pp. 15-19.
Widmann E, Eades J, Yamazaki T, Torii HA, Hayano RS, Hori M et al. Hyperfine structure of the metastable p̄He+ atomcule revealed by a laser-induced (n, l) = (37, 35) → (38, 34) transition. Physics Letters B. 1997 Jul 3;404(1-2):15-19.
Widmann, E. ; Eades, J. ; Yamazaki, T. ; Torii, H. A. ; Hayano, R. S. ; Hori, M. ; Ishikawa, T. ; Kumakura, M. ; Morita, N. ; Sugai, I. ; Hartmann, F. J. ; Von Egidy, T. ; Ketzer, B. ; Maierl, C. ; Pohl, R. ; Horváth, D. / Hyperfine structure of the metastable p̄He+ atomcule revealed by a laser-induced (n, l) = (37, 35) → (38, 34) transition. In: Physics Letters B. 1997 ; Vol. 404, No. 1-2. pp. 15-19.
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abstract = "A precise scan of the previously discovered laser-induced transition (n, l) = (37, 35) → (38, 34) in p̄He+ revealed a doublet structure with a separation of ΔνHF = 1.70 ± 0.05 GHz. This new type of {"}hyperfine{"} splitting is ascribed to the interaction of the antiproton orbital angular momentum and the electron spin.",
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AU - Eades, J.

AU - Yamazaki, T.

AU - Torii, H. A.

AU - Hayano, R. S.

AU - Hori, M.

AU - Ishikawa, T.

AU - Kumakura, M.

AU - Morita, N.

AU - Sugai, I.

AU - Hartmann, F. J.

AU - Von Egidy, T.

AU - Ketzer, B.

AU - Maierl, C.

AU - Pohl, R.

AU - Horváth, D.

PY - 1997/7/3

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