415 citations · 685 across the 10 of their papers we have counts for
10 papers
Anomalous Diffusion in a Monolayer of Lightweight Spheres Fluidized in Airflow
Shihori Koyama, Tomoki Matsuno, Takashi Noguchi
This paper presents statistical analyses of random motions in a single layer of fluidized lightweight spherical particles. Foam polystyrene spheres were driven by an upward airflow…
Contribution of residual quasiparticles to the characteristics of superconducting thin-film resonators
T. Noguchi, S. Mima, C. Otani
It is shown that there are a significant number of quasiparticles present in the superconductor even at the temperature far below the transition temperature and that those quasipar…
Series-connected array of superconductor-insulator-superconductor junctions in the 100-GHz band heterodyne mixer for FOREST on the Nobeyama 45-m telescope
Taku Nakajima, Hirofumi Inoue, Yumi Fujii +5
In this study, we designed and experimentally evaluated a series-connected array of superconductor-insulator-superconductor (SIS) junctions in the 100-GHz band mixer for the multi-…
Planar Superconductor-Insulator-Superconductor Mixer Array Receivers for Wide Field of View Astronomical Observation
Wenlei Shan, Shohei Ezaki, Jie Liu +3
We present a conceptual framework of planar SIS mixer array receivers and the studies on the required techniques. This concept features membrane-based on-chip waveguide probes and…
The LiteBIRD Satellite Mission - Sub-Kelvin Instrument
A. Suzuki, P. A. R. Ade, Y. Akiba +149
Inflation is the leading theory of the first instant of the universe. Inflation, which postulates that the universe underwent a period of rapid expansion an instant after its birth…
Analysis of characteristics of Al MKID resonators
Takashi Noguchi, Agnes Dominjon, Yutaro Sekimoto
We have prepared two kinds of Al resonators using thin films made by evaporation or sputtering and studied temperature behavior of their quality factors and resonance frequencies w…
Mission design of LiteBIRD
T. Matsumura, Y. Akiba, J. Borrill +66
LiteBIRD is a next-generation satellite mission to measure the polarization of the cosmic microwave background (CMB) radiation. On large angular scales the B-mode polarization of t…
A New 100-GHz Band Front-End System with a Waveguide-Type Dual-Polarization Sideband-Separating SIS Receiver for the NRO 45-m Radio Telescope
Taku Nakajima, Masayuki Kawamura, Kimihiro Kimura +8
We developed a waveguide-type dual-polarization sideband-separating SIS receiver system of the 100-GHz band for the 45-m radio telescope at the Nobeyama Radio Observatory, Japan. T…
New 60-cm Radio Survey Telescope with the Sideband-Separating SIS Receiver for the 200 GHz Band
Taku Nakajima, Masahiro Kaiden, Jun Korogi +10
We have upgraded the 60-cm radio survey telescope located in Nobeyama, Japan. We developed a new waveguide-type sideband-separating SIS mixer for the telescope, which enables the s…
Atomic Carbon and CO Isotope Emission in the Vicinity of DR15
T. Oka, S. Yamamoto, M. Iwata +17
We present observations of the 3P1-3P0 fine structure transition of atomic carbon [CI], the J=3-2 transition of CO, as well as of the J=1-0 transitions of 13CO and C18O toward DR15…