First observation of the negative muonium ion produced by electron capture in a beam-foil experiment

Y. Kuang; K. P. Arnold; F. Chmely; M. Eckhause; V. W. Hughes; J. R. Kane; S. Kettell; D. H. Kim; K. Kumar; D. C. Lu; B. Ni; B. Matthias; H. Orth; G. Zu Putlitz; H. R. Schaefer; P. A. Souder; K. Woodle

doi:10.1103/PhysRevA.35.3172

First observation of the negative muonium ion produced by electron capture in a beam-foil experiment

Y. Kuang, K. P. Arnold, F. Chmely, M. Eckhause, V. W. Hughes, J. R. Kane, S. Kettell, D. H. Kim, K. Kumar, D. C. Lu, B. Ni, B. Matthias, H. Orth, G. Zu Putlitz, H. R. Schaefer, P. A. Souder, K. Woodle

Department of Physics

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Abstract

The negative muonium ion Mu-μ+e-e- has been produced by double electron pickup as a beam of positive muons passes through a foil. A clean signal was detected by electrostatically accelerating and analyzing the ions in a magnetic time-of-flight spectrometer. The Mu- beam at the focal plane of our spectrometer had an intensity 1.4×10-5 times that of the incident μ+ beam or 2 s-1, which corresponds to a Mu-/μ+ conversion probability of 0.5×10-4 at the foil in agreement with the calculated value. The kinetic energies of Mu- at the foil are less than several keV as expected.

Original language	English (US)
Pages (from-to)	3172-3175
Number of pages	4
Journal	Physical Review A
Volume	35
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevA.35.3172
State	Published - 1987

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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Kuang, Y., Arnold, K. P., Chmely, F., Eckhause, M., Hughes, V. W., Kane, J. R., Kettell, S., Kim, D. H., Kumar, K., Lu, D. C., Ni, B., Matthias, B., Orth, H., Zu Putlitz, G., Schaefer, H. R., Souder, P. A., & Woodle, K. (1987). First observation of the negative muonium ion produced by electron capture in a beam-foil experiment. Physical Review A, 35(7), 3172-3175. https://doi.org/10.1103/PhysRevA.35.3172

Kuang, Y, Arnold, KP, Chmely, F, Eckhause, M, Hughes, VW, Kane, JR, Kettell, S, Kim, DH, Kumar, K, Lu, DC, Ni, B, Matthias, B, Orth, H, Zu Putlitz, G, Schaefer, HR, Souder, PA & Woodle, K 1987, 'First observation of the negative muonium ion produced by electron capture in a beam-foil experiment', Physical Review A, vol. 35, no. 7, pp. 3172-3175. https://doi.org/10.1103/PhysRevA.35.3172

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title = "First observation of the negative muonium ion produced by electron capture in a beam-foil experiment",

abstract = "The negative muonium ion Mu-μ+e-e- has been produced by double electron pickup as a beam of positive muons passes through a foil. A clean signal was detected by electrostatically accelerating and analyzing the ions in a magnetic time-of-flight spectrometer. The Mu- beam at the focal plane of our spectrometer had an intensity 1.4×10-5 times that of the incident μ+ beam or 2 s-1, which corresponds to a Mu-/μ+ conversion probability of 0.5×10-4 at the foil in agreement with the calculated value. The kinetic energies of Mu- at the foil are less than several keV as expected.",

author = "Y. Kuang and Arnold, {K. P.} and F. Chmely and M. Eckhause and Hughes, {V. W.} and Kane, {J. R.} and S. Kettell and Kim, {D. H.} and K. Kumar and Lu, {D. C.} and B. Ni and B. Matthias and H. Orth and {Zu Putlitz}, G. and Schaefer, {H. R.} and Souder, {P. A.} and K. Woodle",

year = "1987",

doi = "10.1103/PhysRevA.35.3172",

language = "English (US)",

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pages = "3172--3175",

journal = "Physical Review A",

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AU - Kuang, Y.

AU - Arnold, K. P.

AU - Chmely, F.

AU - Eckhause, M.

AU - Hughes, V. W.

AU - Kane, J. R.

AU - Kettell, S.

AU - Kim, D. H.

AU - Kumar, K.

AU - Lu, D. C.

AU - Ni, B.

AU - Matthias, B.

AU - Orth, H.

AU - Zu Putlitz, G.

AU - Schaefer, H. R.

AU - Souder, P. A.

AU - Woodle, K.

PY - 1987

Y1 - 1987

N2 - The negative muonium ion Mu-μ+e-e- has been produced by double electron pickup as a beam of positive muons passes through a foil. A clean signal was detected by electrostatically accelerating and analyzing the ions in a magnetic time-of-flight spectrometer. The Mu- beam at the focal plane of our spectrometer had an intensity 1.4×10-5 times that of the incident μ+ beam or 2 s-1, which corresponds to a Mu-/μ+ conversion probability of 0.5×10-4 at the foil in agreement with the calculated value. The kinetic energies of Mu- at the foil are less than several keV as expected.

AB - The negative muonium ion Mu-μ+e-e- has been produced by double electron pickup as a beam of positive muons passes through a foil. A clean signal was detected by electrostatically accelerating and analyzing the ions in a magnetic time-of-flight spectrometer. The Mu- beam at the focal plane of our spectrometer had an intensity 1.4×10-5 times that of the incident μ+ beam or 2 s-1, which corresponds to a Mu-/μ+ conversion probability of 0.5×10-4 at the foil in agreement with the calculated value. The kinetic energies of Mu- at the foil are less than several keV as expected.

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First observation of the negative muonium ion produced by electron capture in a beam-foil experiment

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