Laser-induced resonant transition at 470.724 nm in the v=n-l-1=2 cascade of metastable antiprotonic helium atoms

F. E. Maas, R. S. Hayano, T. Ishikawa, H. Tamura, H. A. Torii, N. Morita, T. Yamazaki, I. Sugai, K. Nakayoshi, F. J. Hartmann, H. Daniel, T. Von Egidy, B. Ketzer, A. Niestroj, S. Schmid, W. Schmid, D. Horváth, J. Eades, E. Widmann

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Abstract

A laser-induced resonant transition in metastable antiprotonic helium atoms has been found at a wavelength of 470.724±0.002 nm and assigned to the transition (n,l)=(37,34)→(36,33). From the time evolution of the laser resonance intensity, the decay rate of the (37,34) state was determined to be 1.17±0.09 μs-1, about 60% larger than the theoretical radiative decay rate. The sum of the initial populations in the v=n-l-1=2 decay chain was 23±4% of the total number of metastable atoms formed.

Original languageEnglish
Pages (from-to)4266-4269
Number of pages4
JournalPhysical Review A
Volume52
Issue number5
DOIs
Publication statusPublished - Jan 1 1995

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Maas, F. E., Hayano, R. S., Ishikawa, T., Tamura, H., Torii, H. A., Morita, N., Yamazaki, T., Sugai, I., Nakayoshi, K., Hartmann, F. J., Daniel, H., Von Egidy, T., Ketzer, B., Niestroj, A., Schmid, S., Schmid, W., Horváth, D., Eades, J., & Widmann, E. (1995). Laser-induced resonant transition at 470.724 nm in the v=n-l-1=2 cascade of metastable antiprotonic helium atoms. Physical Review A, 52(5), 4266-4269. https://doi.org/10.1103/PhysRevA.52.4266