Acoustic spin transport by superconducting quasiparticles

Funato, Takumi*; Yamakage, Ai*; Matsuo, Mamoru

Physical Review B, 106(21), p.214420_1 - 214420_7, 2022/12

https://doi.org/10.1103/PhysRevB.106.214420

Research of superconducting tunnel junction X-ray detectors with direct signal observation method using a fast current readout system

Kishimoto, Maki; Katagiri, Masaki; Nakamura, Tatsuya; Okubo, Masataka*; Ukibe, Masahiro*; Kurakado, M.*; Kanno, Ikuo*; Fukuda, Daiji*; Takahashi, Hiroyuki*; Kraus, H.*; et al.

Nuclear Instruments and Methods in Physics Research A, 444(1-2), p.124 - 128, 2000/04

https://doi.org/10.1016/S0168-9002(99)01343-1

no abstracts in English

X-ray detection characteristics of Nb-based superconducting tunnel junctions

Katagiri, Masaki; Kishimoto, Maki; Ukibe, M.*; Nakamura, Tatsuya*; Kurakado, M.*; Maehata, Keisuke*; *; Nakazawa, Masaharu*

Japanese Journal of Applied Physics, 37(SUPPL.37-2), p.13 - 18, 1998/00

https://doi.org/10.1143/JJAP.37.L13

no abstracts in English

Preparation of uranium standard particles and isotope ratio analysis by secondary ion mass spectrometry

Tomita, Ryohei; Tomita, Jumpei; Suzuki, Daisuke; Yasuda, Kenichiro; Esaka, Fumitaka; Miyamoto, Yutaka

no journal, , 

It is necessary to correctly calibrate the mass bias effect of uranium isotopes using uranium standard particles in the secondary ion mass spectrometry (SIMS) analysis. The preparation of uranium standard particles is mainly carried out by drying aerosols generated from uranium standard solutions in unique equipment and facility. This is the reason why only few types of commercial uranium standard particles are available. In this study, our purpose is to propose easier way to prepare uranium standard particle by immersing porous silicon particle in the uranium standard solution. Quality of this handmade uranium standard particles were evaluated by analyzing isotopic ratios using SIMS. The uranium isotopic standard solution (U/U=0.694, U/U=0.922) of 2.21 ppm was concentrated to 4.4810 ppm, and mixed with porous silicon particle. Uranium isotopic ratios of handmade particles collected on a glassy carbon planchet were analyzed using LG-SIMS (IMS-1300HR, CAMECA). Analytical results of U/U and U/U agreed with the certified value of standard solution within the standard deviation (1). This new particle preparation is effective to create standard particles without uranium aerosol, and the particles made by this method showed same isotopic ratios as standard solution in which porous silicon particles was immerged.