106 citations · 451 across the 20 of their papers we have counts for
20 papers
Hit-rate capability of a silicon strip detector module for decay positron detection in the J-PARC muon /EDM experiment
Ryuto Azuma, Katsunori Awa, Shunsuke Doi +34
In the J-PARC muon /EDM experiment, a silicon strip detector will be used to detect positrons from muon decays. The detector consists of planes of detector modules arranged ra…
Lifetime measurement of the muonic atoms of enriched Si isotopes
R. Mizuno, M. Niikura, S. Akamatsu +12
Background: A muonic atom, composed of a negative muon and an atomic nucleus, undergoes two primary decay processes: muon-electron decay and muon nuclear capture. The branching rat…
Precision measurements of muonium and muonic helium hyperfine structure at J-PARC
Patrick Strasser, Mitsushi Abe, Kanta Asai +19
At the J-PARC Muon Science Facility (MUSE), the MuSEUM collaboration is now performing new precision measurements of the ground state hyperfine structure (HFS) of both muonium and…
Muon spin relaxation in mixed perovskite (LaAlO)(SrAlTaO) with
Takashi U. Ito, Wataru Higemoto, Akihiro Koda +2
We report on muon spin relaxation (SR) measurements in a mixed perovskite compound, (LaAlO)(SrAlTaO) with (LSAT), which is…
Negatively Charged Muonium and Related Centers in Solids
Takashi U. Ito, Wataru Higemoto, Koichiro Shimomura
Muonium (Mu) centers formed upon implantation of in a solid have long been investigated as an experimentally accessible model of isolated hydrogen impurities. Recent discover…
Development of microwave cavities for measurement of muonium hyperfine structure at J-PARC
K. S. Tanaka, M. Iwasaki, O. Kamigaito +16
The MuSEUM collaboration is planning measurements of the ground-state hyperfine structure (HFS) of muonium at the Japan Proton Accelerator Research Complex (J-PARC), Materials and…
Rabi-Oscillation Spectroscopy of the Hyperfine Structure of Muonium Atoms
S. Nishimura, H. A. Torii, Y. Fukao +26
As a new method to determine the resonance frequency, Rabi-oscillation spectroscopy has been developed. In contrast to the conventional spectroscopy which draws the resonance curve…
Study of muonium emission from laser-ablated silica aerogel
J. Beare, G. Beer, J. H. Brewer +23
The emission of muonium () atoms into vacuum from silica aerogel with laser ablation on its surface was studied with various ablation structures at room temperature using t…
New precise spectroscopy of the hyperfine structure in muonium with a high-intensity pulsed muon beam
S. Kanda, Y. Fukao, Y. Ikedo +20
A hydrogen-like atom consisting of a positive muon and an electron is known as muonium. It is a near-ideal two-body system for a precision test of bound-state theory and fundamenta…
Performance evaluation of a silicon strip detector for positrons/electrons from a pulsed a muon beam
T. Aoyagi, Y. Honda, H. Ikeda +26
A high-intensity pulsed muon beam is becoming available at the at the Japan Proton Accelerator Research Complex (J-PARC). Many experiments to study fundamental physics using this h…
Hunting for T-violation and Majoranality of Neutrinos in Muon Decays
Takeshi Fukuyama, Sohtaro Kanda, Daisuke Nomura +1
We propose a new experiment to search for a time-reversal (T) symmetry breaking process in muon decay and the Majoranality of the neutrinos. In the presence of V+A interactions, th…
A New Approach for Measuring the Muon Anomalous Magnetic Moment and Electric Dipole Moment
M. Abe, S. Bae, G. Beer +93
This paper introduces a new approach to measure the muon magnetic moment anomaly , and the muon electric dipole moment (EDM) at the J-PARC muon facility. The g…
First muon acceleration using a radio frequency accelerator
S. Bae, H. Choi, S. Choi +23
Muons have been accelerated by using a radio frequency accelerator for the first time. Negative muonium atoms (Mu), which are bound states of positive muons () and two ele…
Excited configurations of hydrogen in the BaTiOH perovskite lattice associated with hydrogen exchange and transport
T. U. Ito, A. Koda, K. Shimomura +4
Excited configurations of hydrogen in the oxyhydride BaTiOH (), which are considered to be involved in its hydrogen transport and exchange processes, were in…
Electronic structure of Mu-complex donor state in rutile TiO
K. Shimomura, R. Kadono, A. Koda +2
The hyperfine structure of the interstitial muonium (Mu) in rutile (TiO, weakly -type) has been identified by means of a muon spin rotation technique. The angle-resolved hyp…
Electronic structure of shallow donor state associated with muonium in rutile TiO
K. Shimomura, R. Kadono, A. Koda +2
The hyperfine structure of the interstitial muonium (Mu) center in rutile (TiO, weakly -type) has been identified by means of muon spin rotation technique. The angle-resolve…
Enhancement of muonium emission rate from silica aerogel with a laser ablated surface
G. A. Beer, Y. Fujiwara, S. Hirota +24
Emission of muonium () 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 dia…
J-PARC MUSE H-line optimization for the g-2 and MuHFS experiments
A. Toyoda, Y. Fujiwara, Y. Fukao +12
Significant deviation of the anomalous magnetic moment value (g-2) observed by the muon g-2 experiment should be confirmed by the other experiment. This value is experimentally det…
Muonium as a shallow center in GaN
K. Shimomura, R. Kadono, K. Ohishi +5
A paramagnetic muonium (Mu) state with an extremely small hyperfine parameter was observed for the first time in single-crystalline GaN below 25 K. It has a highly anisotropic hype…
Electronic structure of the muonium center as a shallow donor in ZnO
K. Shimomura, K. Nishiyama, R. Kadono
The electronic structure and the location of muonium centers (Mu) in single-crystalline ZnO were determined for the first time. Two species of Mu centers with extremely small hyper…