Study of muonium emission from laser-ablated silica aerogel

J. Beare; G. Beer; J. H. Brewer; T. Iijima; K. Ishida; M. Iwasaki; S. Kamal; K. Kanamori; N. Kawamura; R. Kitamura; S. Li; G. M. Luke; G. M. Marshall; T. Mibe; Y. Miyake; Y. Oishi; K. Olchanski; A. Olin; M. Otani; M. A. Rehman; N. Saito; Y. Sato; K. Shimomura; K. Suzuki; M. Tabata; G. Yasuda

doi:10.1093/ptep/ptaa145

Study of muonium emission from laser-ablated silica aerogel

J. Beare, G. Beer, J. H. Brewer, T. Iijima, K. Ishida, M. Iwasaki, S. Kamal, K. Kanamori, N. Kawamura, R. Kitamura, S. Li, G. M. Luke, G. M. Marshall, T. Mibe, Y. Miyake, Y. Oishi, K. Olchanski, A. Olin, M. Otani, M. A. RehmanN. Saito, Y. Sato, K. Shimomura, K. Suzuki, M. Tabata, G. Yasuda

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Abstract

The emission of muonium (μ+e-) atoms into vacuum from silica aerogel with laser ablation on its surface was studied with various ablation structures at room temperature using the subsurface muon beams at TRIUMF and Japan Proton Accelerator Research Complex (J-PARC). Laser ablation was applied to produce holes or grooves with typical dimensions of a few hundred μm to a few mm, except for some extreme conditions. The measured emission rate tends to be higher for larger fractions of ablation opening and for shallower depths. More than a few ablation structures reach the emission rates similar to the highest achieved in past measurements. The emission rate is found to be stable at least for a couple of days. Measurements of spin precession amplitudes for the produced muonium atoms and remaining muons in a magnetic field determine a muonium formation fraction of (65.5 pm 1.8)%. The precession of the polarized muonium atoms is also observed clearly in vacuum. A projection of the emission rates measured at TRIUMF to the corresponding rates at J-PARC is demonstrated taking the different beam condition into account reasonably.

Original language	English
Article number	123C01
Journal	Progress of Theoretical and Experimental Physics
Volume	2020
Issue number	12
DOIs	https://doi.org/10.1093/ptep/ptaa145
State	Published - Dec 1 2020
Externally published	Yes

Keywords

C31
G04

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Beare, J., Beer, G., Brewer, J. H., Iijima, T., Ishida, K., Iwasaki, M., Kamal, S., Kanamori, K., Kawamura, N., Kitamura, R., Li, S., Luke, G. M., Marshall, G. M., Mibe, T., Miyake, Y., Oishi, Y., Olchanski, K., Olin, A., Otani, M., ... Yasuda, G. (2020). Study of muonium emission from laser-ablated silica aerogel. Progress of Theoretical and Experimental Physics, 2020(12), Article 123C01. https://doi.org/10.1093/ptep/ptaa145

@article{ad5d97df167d462b9e0e1070991d6742,

title = "Study of muonium emission from laser-ablated silica aerogel",

abstract = "The emission of muonium (μ+e-) atoms into vacuum from silica aerogel with laser ablation on its surface was studied with various ablation structures at room temperature using the subsurface muon beams at TRIUMF and Japan Proton Accelerator Research Complex (J-PARC). Laser ablation was applied to produce holes or grooves with typical dimensions of a few hundred μm to a few mm, except for some extreme conditions. The measured emission rate tends to be higher for larger fractions of ablation opening and for shallower depths. More than a few ablation structures reach the emission rates similar to the highest achieved in past measurements. The emission rate is found to be stable at least for a couple of days. Measurements of spin precession amplitudes for the produced muonium atoms and remaining muons in a magnetic field determine a muonium formation fraction of (65.5 pm 1.8)%. The precession of the polarized muonium atoms is also observed clearly in vacuum. A projection of the emission rates measured at TRIUMF to the corresponding rates at J-PARC is demonstrated taking the different beam condition into account reasonably.",

keywords = "C31, G04",

author = "J. Beare and G. Beer and Brewer, {J. H.} and T. Iijima and K. Ishida and M. Iwasaki and S. Kamal and K. Kanamori and N. Kawamura and R. Kitamura and S. Li and Luke, {G. M.} and Marshall, {G. M.} and T. Mibe and Y. Miyake and Y. Oishi and K. Olchanski and A. Olin and M. Otani and Rehman, {M. A.} and N. Saito and Y. Sato and K. Shimomura and K. Suzuki and M. Tabata and G. Yasuda",

note = "Publisher Copyright: {\textcopyright} 2020 The Author(s) 2020. Published by Oxford University Press on behalf of the Physical Society of Japan.",

year = "2020",

month = dec,

day = "1",

doi = "10.1093/ptep/ptaa145",

language = "English",

volume = "2020",

journal = "Progress of Theoretical and Experimental Physics",

issn = "2050-3911",

publisher = "Oxford University Press",

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Beare, J, Beer, G, Brewer, JH, Iijima, T, Ishida, K, Iwasaki, M, Kamal, S, Kanamori, K, Kawamura, N, Kitamura, R, Li, S, Luke, GM, Marshall, GM, Mibe, T, Miyake, Y, Oishi, Y, Olchanski, K, Olin, A, Otani, M, Rehman, MA, Saito, N, Sato, Y, Shimomura, K, Suzuki, K, Tabata, M & Yasuda, G 2020, 'Study of muonium emission from laser-ablated silica aerogel', Progress of Theoretical and Experimental Physics, vol. 2020, no. 12, 123C01. https://doi.org/10.1093/ptep/ptaa145

TY - JOUR

T1 - Study of muonium emission from laser-ablated silica aerogel

AU - Beare, J.

AU - Beer, G.

AU - Brewer, J. H.

AU - Iijima, T.

AU - Ishida, K.

AU - Iwasaki, M.

AU - Kamal, S.

AU - Kanamori, K.

AU - Kawamura, N.

AU - Kitamura, R.

AU - Li, S.

AU - Luke, G. M.

AU - Marshall, G. M.

AU - Mibe, T.

AU - Miyake, Y.

AU - Oishi, Y.

AU - Olchanski, K.

AU - Olin, A.

AU - Otani, M.

AU - Rehman, M. A.

AU - Saito, N.

AU - Sato, Y.

AU - Shimomura, K.

AU - Suzuki, K.

AU - Tabata, M.

AU - Yasuda, G.

PY - 2020/12/1

Y1 - 2020/12/1

N2 - The emission of muonium (μ+e-) atoms into vacuum from silica aerogel with laser ablation on its surface was studied with various ablation structures at room temperature using the subsurface muon beams at TRIUMF and Japan Proton Accelerator Research Complex (J-PARC). Laser ablation was applied to produce holes or grooves with typical dimensions of a few hundred μm to a few mm, except for some extreme conditions. The measured emission rate tends to be higher for larger fractions of ablation opening and for shallower depths. More than a few ablation structures reach the emission rates similar to the highest achieved in past measurements. The emission rate is found to be stable at least for a couple of days. Measurements of spin precession amplitudes for the produced muonium atoms and remaining muons in a magnetic field determine a muonium formation fraction of (65.5 pm 1.8)%. The precession of the polarized muonium atoms is also observed clearly in vacuum. A projection of the emission rates measured at TRIUMF to the corresponding rates at J-PARC is demonstrated taking the different beam condition into account reasonably.

AB - The emission of muonium (μ+e-) atoms into vacuum from silica aerogel with laser ablation on its surface was studied with various ablation structures at room temperature using the subsurface muon beams at TRIUMF and Japan Proton Accelerator Research Complex (J-PARC). Laser ablation was applied to produce holes or grooves with typical dimensions of a few hundred μm to a few mm, except for some extreme conditions. The measured emission rate tends to be higher for larger fractions of ablation opening and for shallower depths. More than a few ablation structures reach the emission rates similar to the highest achieved in past measurements. The emission rate is found to be stable at least for a couple of days. Measurements of spin precession amplitudes for the produced muonium atoms and remaining muons in a magnetic field determine a muonium formation fraction of (65.5 pm 1.8)%. The precession of the polarized muonium atoms is also observed clearly in vacuum. A projection of the emission rates measured at TRIUMF to the corresponding rates at J-PARC is demonstrated taking the different beam condition into account reasonably.

KW - C31

KW - G04

UR - http://www.scopus.com/inward/record.url?scp=85099367764&partnerID=8YFLogxK

U2 - 10.1093/ptep/ptaa145

DO - 10.1093/ptep/ptaa145

M3 - Article

AN - SCOPUS:85099367764

SN - 2050-3911

VL - 2020

JO - Progress of Theoretical and Experimental Physics

JF - Progress of Theoretical and Experimental Physics

IS - 12

M1 - 123C01

ER -

Study of muonium emission from laser-ablated silica aerogel

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