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arxiv: 1407.8248 · v1 · pith:QGH534BNnew · submitted 2014-07-31 · ⚛️ physics.ins-det · hep-ex· physics.atom-ph

Enhancement of muonium emission rate from silica aerogel with a laser ablated surface

G.A. Beer , Y. Fujiwara , S. Hirota , K. Ishida , M. Iwasaki , S. Kanda , H. Kawai , N. Kawamura
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R. Kitamura S. Lee W. Lee G.M. Marshall T. Mibe Y. Miyake S. Okada K. Olchanski A. Olin Y. Oishi H. Onishi M. Otani N. Saito K. Shimomura P. Strasser M. Tabata D. Tomono K. Ueno K. Yokoyama E. Won
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classification ⚛️ physics.ins-det hep-exphysics.atom-ph
keywords aerogelemissionlaserlaser-processedmuoniumsurfaceablatedablation
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Emission of muonium ($\mu^+e^-$) atoms from a laser-processed aerogel surface into vacuum was studied for the first time. Laser ablation was used to create hole-like regions with diameter of about 270$~\mu$m in a triangular pattern with hole separation in the range of 300--500$~\mu$m. The emission probability for the laser-processed aerogel sample is at least eight times higher than for a uniform one.

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