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

doi:10.1103/PhysRevLett.73.1485

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

Chair of Physics I

Research output: Contribution to journal › Article › peer-review

75 Scopus citations

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 language	English
Pages (from-to)	1485-1488
Number of pages	4
Journal	Physical Review Letters
Volume	73
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.73.1485
State	Published - 1994

Access to Document

10.1103/PhysRevLett.73.1485

Cite this

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. (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

@article{999fceb48c7443fd8c1b75212adab073,

title = "Laser studies of the decay chain of metastable antiprotonic helium atoms",

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.",

author = "Hayano, {R. S.} and Maas, {F. E.} and Torii, {H. A.} and N. Morita and M. Kumakura and T. Yamazaki and H. Masuda and I. Sugai and Hartmann, {F. J.} and H. Daniel and {Von Egidy}, T. and B. Ketzer and W. M{\"u}ller and W. Schmid and D. Horv{\'a}th and J. Eades and E. Widmann",

year = "1994",

doi = "10.1103/PhysRevLett.73.1485",

language = "English",

volume = "73",

pages = "1485--1488",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "11",

}

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

TY - JOUR

T1 - Laser studies of the decay chain of metastable antiprotonic helium atoms

AU - Hayano, R. S.

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.

PY - 1994

Y1 - 1994

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0000958178&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.73.1485

DO - 10.1103/PhysRevLett.73.1485

M3 - Article

AN - SCOPUS:0000958178

SN - 0031-9007

VL - 73

SP - 1485

EP - 1488

JO - Physical Review Letters

JF - Physical Review Letters

IS - 11

ER -

Laser studies of the decay chain of metastable antiprotonic helium atoms

Abstract

Access to Document

Other files and links

Fingerprint

Cite this