Phys. Rev. Lett. 60, 101–104 (1988)

Laser Excitation of the Muonium 1S-2S Transition

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Steven Chu^1,*, A. P. Mills, Jr.², A. G. Yodh¹, K. Nagamine³, Y. Miyake³, and T. Kuga^3,†
¹AT&T Bell Laboratories, Holmdel, New Jersey 07733
²AT&T Bell Laboratories, Murray Hill, New Jersey 07974
³Meson Science Laboratory, University of Tokyo, Bunkyo-ku, Tokyo, Japan

Received 4 September 1987; published in the issue dated 11 January 1988

We present evidence for the excitation of the two-photon Doppler-free 1S-2S transition in muonium. Thermal muonium atoms were produced in vacuum by a 27.5-MeV/c pulsed positive-muon beam incident on a powdered SiO₂ target. Transitions were induced by the light from a frequency-doubled pulsed dye laser and were detected by photoionization of the 2S state. The 1S(F=1)→2S(F=1) transition frequency is within 300 MHz of the QED prediction.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.60.101

DOI:

10.1103/PhysRevLett.60.101

PACS:

36.10.Dr

^*Present address: Physics Department, Stanford University, Stanford, CA 94305.

^†Present address: Institute for Solid State Physics, University of Tokyo, Roppongi, Mirato-ku, Tokyo, Japan.

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Phys. Rev. Lett. 60, 101–104 (1988)

Laser Excitation of the Muonium 1S-2S Transition