activity
20102023
most citedNew high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the European Spallation Source

64 citations · 193 across the 13 of their papers we have counts for

collaborators

13 papers

physics.ins-det2023★ 9 cited

Development of Neutron Interferometer using Multilayer Mirrors and Measurements of Neutron-Nuclear Scattering Length with Pulsed Neutron Source

Takuhiro Fujiie, Masahiro Hino, Takuya Hosobata +6

This study entailed the successful deployment of a novel neutron interferometer that utilizes multilayer mirrors. The apparatus facilitates a precise evaluation of the wavelength d…

physics.ins-det2023★ 5 cited

A diffuse scattering model of ultracold neutrons on wavy surfaces

S. Imajo, H. Akatsuka, K. Hatanaka +10

Metal tubes plated with nickel-phosphorus are used in many fundamental physics experiments using ultracold neutrons (UCN) because of their ease of fabrication. These tubes are usua…

physics.ins-det2022★ 6 cited

Study on the reusability of fluorescent nuclear track detectors using optical bleaching

Abdul Muneem, Junya Yoshida, Hiroyuki Ekawa +14

Fluorescent nuclear track detectors (FNTDs) based on AlO:C,Mg crystals are luminescent detectors that can be used for dosimetry and detection of charged particles and n…

physics.ins-det2022★ 1 cited

Investigation of the neutron imaging applications using fine-grained nuclear emulsion

Abdul Muneem, Junya Yoshida, Hiroyuki Ekawa +11

Neutron imaging is a non-destructive inspection technique with a wide range of applications. One of the important aspects concerning neutron imaging is achieving micrometer-scale s…

nucl-ex2022★ 7 cited

Characterization of electroless nickel-phosphorus plating for ultracold-neutron storage

H. Akatsuka, T. Andalib, B. Bell +51

Electroless nickel plating is an established industrial process that provides a robust and relatively low-cost coating suitable for transporting and storing ultracold neutrons (UCN…

physics.ins-det2022★ 4 cited

The Precision nEDM Measurement with UltraCold Neutrons at TRIUMF

Ryohei Matsumiya, Hiroaki Akatsuka, Chris P. Bidinosti +45

The TRIUMF Ultra-Cold Advanced Neutron (TUCAN) collaboration aims at a precision neutron electric dipole moment (nEDM) measurement with an uncertainty of $10^{-27}\,e\cdot\mathrm{c…

physics.ins-det2022★ 2 cited

Study of Thin Iron Films for Polarization Analysis of Ultracold Neutrons

Hiroaki Akatsuka, Takashi Higuchi, Sean Hansen-Romu +10

The TUCAN (TRIUMF Ultra-Cold Advanced Neutron) collaboration aims to search for the neutron electric dipole moment (nEDM) with unprecedented precision. One of the essential element…

hep-ex2021★ 3 cited

Precise Neutron Lifetime Measurement Using Pulsed Neutron Beams at J-PARC

N. Sumi, K. Hirota, G. Ichikawa +18

A neutron decays into a proton, an electron, and an anti-neutrino through the beta-decay process. The decay lifetime (880 s) is an important parameter in the weak interaction…

hep-ex2020★ 36 cited

Neutron lifetime measurement with pulsed cold neutrons

K. Hirota, G. Ichikawa, S. Ieki +26

The neutron lifetime has been measured by comparing the decay rate with the reaction rate of He nuclei of a pulsed neutron beam from the spallation neutron source at the Japan…

physics.ins-det2020★ 64 cited

New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the European Spallation Source

A. Addazi, K. Anderson, S. Ansell +92

The violation of Baryon Number, , is an essential ingredient for the preferential creation of matter over antimatter needed to account for the observed baryon asymmetr…

hep-ex2015★ 3 cited

Precision Measurement of the Position-space Wave Functions of Gravitationally Bound Ultracold Neutrons

Y. Kamiya, G. Ichikawa, S. Komamiya

Gravity is the most familiar force at our natural length scale. However, it is still exotic from the view point of particle physics. The first experimental study of quantum effects…

hep-ex2013★ 38 cited

Observation of the Spatial Distribution of Gravitationally Bound Quantum States of Ultracold Neutrons and Its Derivation Using the Wigner Function

G. Ichikawa, S. Komamiya, Y. Kamiya +9

Ultracold neutrons (UCNs) can be bound by the potential of terrestrial gravity and a reflecting mirror. The wave function of the bound state has characteristic modulations. We carr…

physics.ins-det2010★ 15 cited

Development of a Pixel Detector for Ultra-Cold Neutrons

S. Kawasaki, G. Ichikawa, M. Hino +5

A pixel detector with high spatial resolution and temporal information for ultra-cold neutrons is developed based on a commercial CCD on which a neutron converter is attached. 10B…