松井 康平 (マツイ コウヘイ)

MATSUI Kouhei

写真a

職名

助教

研究室住所

福岡県北九州市戸畑区仙水町1-1

取得学位 【 表示 / 非表示

  • 東京大学 -  博士(工学)  2020年03月

学内職務経歴 【 表示 / 非表示

  • 2020年04月
    -
    継続中

    九州工業大学   大学院工学研究院   宇宙システム工学研究系   助教  

 

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  • Mode transition of plasma expansion for laser induced breakdown in Air

    Shimamura K., Matsui K., Ofosu J., Yokota I., Komurasaki K.

    Applied Physics Letters    110 ( 13 )   2017年03月  [査読有り]

     概要を見る

    © 2017 Author(s). High-speed shadowgraph visualization experiments conducted using a 10 J pulse transversely excited atmospheric (TEA) CO2 laser in ambient air provided a state transition from overdriven to Chapman-Jouguet in the laser-supported detonation regime. At the state transition, the propagation velocity of the laser-supported detonation wave and the threshold laser intensity were 10 km/s and 1011 W/m2, respectively. State transition information, such as the photoionization caused by plasma UV radiation, of the avalanche ionization ahead of the ionization wave front can be elucidated from examination of the source seed electrons.

    DOI Scopus

  • Accurate propagation velocity measurement of laser supported detonation waves

    Matsui K., Shimano T., Ofosu J., Komurasaki K., Schoenherr T., Koizumi H.

    Vacuum    136   171 - 176   2017年02月  [査読有り]

     概要を見る

    © 2016 Elsevier Ltd One dimensional experimental data of a Laser Supported Detonation (LSD) wave is necessary for validation of the LSD propagation model. In this study, a LSD was driven in a pulsed CO2 laser beam whose equivalent diameter was 7.2 mm, which was sufficient to neglect lateral enthalpy dissipation in comparison with laser energy input. In order to evaluate this relation, an identical LSD wave propagation velocity was obtained with and without lateral flow confinement by a solid wall. In addition, accurate prediction of the LSD propagation velocities were obtained. These were same in a beam of 5.1 mm diameter while it was about twice as high as in a beam of 1.2 mm diameter. In the high laser intensity region, the LSD propagation velocity was higher than that of Chapman-Jouguet condition.

    DOI Scopus

  • Laser-induced discharge propagation velocity in helium and argon gases

    Shimano T., Ofosu J., Matsui K., Komurasaki K., Koizumi H.

    Transactions of the Japan Society for Aeronautical and Space Sciences    60 ( 6 ) 378 - 381   2017年01月  [査読有り]

    DOI Scopus