Zobrazeno 1 - 10
of 80
pro vyhledávání: '"K. Norizawa"'
Autor:
I. Nozawa, K. Kan, J. Yang, A. Ogata, T. Kondoh, M. Gohdo, K. Norizawa, H. Kobayashi, H. Shibata, S. Gonda, Y. Yoshida
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 17, Iss 7, p 072803 (2014)
By monitoring coherent transition radiation (CTR) with a Michelson interferometer, bunch length measurement was investigated. Less-than-20-fs electron bunches were generated by a photocathode-based linear accelerator (linac) and a magnetic bunch comp
Externí odkaz:
https://doaj.org/article/f7883a8a1fa14ff59d9702d8abc174ef
Publikováno v:
2020 IEEE International Interconnect Technology Conference (IITC).
Ferroelectric random-access memory (FeRAM) is one of the promising candidates for future nonvolatile memory devices. High density FeRAM requires more robust electrode material for capacitor reliability to replace Pt or Ir electrodes, especially in th
Autor:
Yoichi Yoshida, Masao Gohdo, Jinfeng Yang, Koichi Kan, Tomohiro Toigawa, K. Norizawa, Takafumi Kondoh
Publikováno v:
Radiation Physics and Chemistry. 123:73-78
The formation process of pre-solvated and solvated electron in methanol (MeOH), ethanol (EtOH), n -butanol (BuOH), and n -octanol (OcOH) were investigated using a fs-pulse radiolysis technique by observing the pre-solvated electron at 1400 nm. The fo
Autor:
Takahiro Kozawa, Jinfeng Yang, Yoichi Yoshida, K. Norizawa, Seiichi Tagawa, Atsushi Ogata, Koichi Kan, Takafumi Kondoh
Publikováno v:
Radiation Physics and Chemistry. 84:30-34
The kinetics of geminate ion recombination was studied by the femtosecond pulse radiolysis of n-dodecane with biphenyl solution. The complicated biphenyl concentration-dependence behaviors of the transient absorptions at 800 nm are observed and eluci
Publikováno v:
Radiation Measurements. 47:890-893
Radiation-induced free radicals in hydrated magnesium sulfate, which are thought to be present on the surface of Europa, one of the Jovian moons, have been studied by electron spin resonance (ESR). ESR signals of both atomic hydrogen (H·) at g = 2.0
Publikováno v:
Radiation Physics and Chemistry. 80:1323-1326
A novel method to generate high-power THz radiation is proposed. If a beam with a bunch length on the order of 100 fs is injected into an electron–hole plasma of a semiconductor with a plasma frequency on the order of THz, THz wake fields are coher
Autor:
T. Kaneko, Atsushi Ogata, Jinfeng Yang, Takafumi Kondoh, Yoichi Yoshida, K. Norizawa, Shigeru Kashiwagi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 637:S95-S98
In this study, we have analytically shown that if the electron bunch length is in the 100-as range, the energy loss of the bunch is proportional to the square of the number of electrons in the bunch. If the number of electrons is large, the collectiv
Publikováno v:
Radiation Physics and Chemistry. 80:286-290
The primary process of radiation chemistry was studied by the femtosecond pulse radiolysis in n-dodecane. The time-dependent behavior of geminate ion recombination in n-dodecane was investigated in neat n-dodecane and the solutions containing electro
Autor:
Jinfeng Yang, Koichi Kan, Yoichi Yoshida, Atsushi Ogata, Takahiro Kozawa, Takafumi Kondoh, K. Norizawa
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 622:35-40
Pulse radiolysis, a stroboscopic method involving the use of an ultrashort electron bunch and ultrashort light, is essential for the observation of ultrafast reactions. The time resolution of pulse radiolysis depends on the electron bunch length. At
Publikováno v:
Radiation Physics and Chemistry. 78:1153-1156
The single crystal of MgSO 4 .7H 2 O is very interesting to study the structure and kinetics of trapped electron in solids, because the hydrated salt has many H 2 O molecules in the crystal lattice like water. The pulse radiolysis study of the trappe