著者

TAKAHASHI Kazuhiro KAWAGUCHI Satoru SATOH Kohki KAWAGUCHI Hideki TIMOSHKIN Igor GIVEN Martin MACGREGOR Scott

出版者

Japan Society of Applied Physics

雑誌

Japanese Journal of Applied Physics (ISSN:00214922)

巻号頁・発行日

vol.58, no.2, pp.026001, 2019-01-21

被引用文献数

1

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The concentration variations of reactive oxygen/nitrogen species in water, such as H2O2, NO2 −, and NO3 − generated by pulsed-discharge plasma exposure, are calculated using reaction rates of chemical reactions and acid-base equilibrium in water. The calculated concentrations and pH values are in good agreement with measured data within the range where the significant changes of the measured data are observed. The rate constant for ONOOH generation is estimated to be 7.8 × 103 M−2 s−1, and this value is in good agreement with previously reported values. The generation rates of H2O2, NO2 −, and NO3 − are estimated to be 7.70 × 10−7, 4.10 × 10−7, and 1.10 × 10−7 M s−1, respectively.

著者

Ono Yukinori Zimmerman Neil M. Yamazaki Kenji Takahashi Yasuo

出版者

Japan Society of Applied Physics

雑誌

Japanese journal of applied physics. Pt. 2, Letters (ISSN:00214922)

巻号頁・発行日

vol.42, no.10, pp.L1109-L1111, 2003-10-01

参考文献数

19

被引用文献数

7 23

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A single-electron turnstile has been demonstrated using a silicon-based dual-gate single-electron transistor (SET). Each gate independently controls the closing and opening of the channel acting as the SET lead, which enables single-electron transfer synchronized with ac gate biases. By applying ac biases to the dual gates with a frequency $f$ of ${\sim}1$ MHz and a phase shift of $\pi$, current staircases quantized in units of ef are observed in drain current vs drain voltage characteristics at 25 K.

著者

Kojima Osamu Kita Takashi

出版者

Japan Society of Applied Physics

雑誌

Appl. Phys. Express (ISSN:18820778)

巻号頁・発行日

vol.9, no.6, 2016-05-09

被引用文献数

2

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In this study, we report the effects of the exciton line widths on the amplitude of quantum beat oscillations using a model with the Voigt function. Using the Voigt function, we find that the maximum amplitude appears at the central energy between two excitons. This result agrees with many previous experimental results. Our analysis helps in identifying the condition for strong quantum beat oscillation, which is important for device applications such as terahertz electromagnetic wave emitters and ultrafast switches.