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Demonstration of impact coalescence process of silicate particles in photo-planetary disks

Publicly Offered Research

Project AreaA Paradigm Shift by a New Integrated Theory of Star Formation: Exploring the Expanding Frontier of Habitable Planetary Systems in Our Galaxy
Project/Area Number 21H00052
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionUniversity of Occupational and Environmental Health, Japan

Principal Investigator

門野 敏彦  産業医科大学, 医学部, 教授 (60359198)

Project Period (FY) 2021-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2022: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords微粒子の高速衝突 / デブリ円盤 / サイズ分布 / 衝突による粒子の合体と破壊 / スペクトルエネルギー分布 / サブミクロン粒子 / 衝突現象 / 合体成長 / 原始惑星系円盤 / 衝突過程 / 珪酸塩微粒子 / 衝突 / 合体
Outline of Research at the Start

サブミクロンの珪酸塩微粒子を数十m/sから数百m/sまで加速して衝突実験を行い,微粒子の合体が実際に起こるかどうかを実証することを目指す.これまでに衝突実験のための微粒子集合体加速方法の開発および速度計測系の構築を行った.今回の研究計画ではこれを継続,発展させ,衝突速度の関数としてサブミクロンサイズのガラス粒子と板状のガラスとの衝突における付着効率,付着強度を求めることを目的とする.

Outline of Annual Research Achievements

Impact experiments were conducted at a velocity of ~0.2-1.0 km/s using fine particles with several microns or sub-microns in size. For metal (Cu) plate targets, as previous impact experiments using projectiles with larger sizes than tens of micron, our experiments with the fine particles show that projectile materials can remain in the crater. For brittle (SiO2 glass) plate targets, though previous impact experiments using projectiles with larger sizes than tens of microns have shown the spallation and ejection of projectile materials, our experiments with the fine particles show that irreversible inelastic deformation of targets occurred like metals and that projectile materials can remain in the crater. This is explained by the absorption of impact energy determined via the competition between deformation and crack propagation. The deformation thus contributes to the energy absorption even for brittle materials at small sizes. Compiling our results and previous data, we found that sticking can occur in collisions with particles up to at least 1 cm for ductile (metal) targets and 10 microns for brittle targets at several hundred m/s. As an application, we evaluated the size distribution of dust grains in a debris disk where the sticking of fine particles is assumed to occur. We demonstrated that the collisional sticking modified the size distribution, resulting in the decrease of spectral energy distribution at millimeter wavelengths, consistent with the photometry data of this debris disk. This suggests that the sticking of fine particles occurs in this debris disk.

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (9 results)

All 2024 2023 2021

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (3 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Sticking of Fine Particles in High-velocity Impact: Application to Size Distribution of Dust Grains in a Debris Disk2024

    • Author(s)
      Toshihiko Kadono, Hiroshi Kobayashi, and Mitsuru Yokoyama
    • Journal Title

      The Astrophysical Journal

      Volume: 960 Issue: 1 Pages: 38-38

    • DOI

      10.3847/1538-4357/acfee6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experimental investigation of impact close to the edge of boulders2023

    • Author(s)
      Kadono Toshihiko、Nakamura Akiko M.、Suetsugu Ryo、Chang Daehyo、Shiramizu Seiya、Takatsu Issei、Ogawa Koki、Nomura Keita、Nagaashi Yuuya、Murakami Yuichi、Yamasaki Yutaro、Shiomoto Junpei、Okamoto Takaya、Tanaka Shigeru、Kawai Nobuaki
    • Journal Title

      Planetary and Space Science

      Volume: 236 Pages: 105763-105763

    • DOI

      10.1016/j.pss.2023.105763

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Observation of Vertically Ejected Plumes Generated by the Impact of Hollow Projectiles at Various Velocities2023

    • Author(s)
      Kadono Toshihiko、Suzuki Ayako I.、Suetsugu Ryo、Maeda Ryusei、Watanabe Tatsuya、Miyaji Nina、Murayama Ayaka、Yoshida Fumi、Higuchi Arika、Shimaki Yuri、Hasegawa Sunao
    • Journal Title

      The Planetary Science Journal

      Volume: 4 Issue: 5 Pages: 82-82

    • DOI

      10.3847/psj/accbbb

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Resurfacing processes on asteroid (162173) Ryugu caused by an artificial impact of Hayabusa2's Small Carry-on Impactor2021

    • Author(s)
      Honda Rie、Arakawa Masahiko、Shimaki Yuri、Shirai Kei、Yokota Yasuhiro、Kadono Toshihiko、Wada Koji、et al.
    • Journal Title

      Icarus

      Volume: 366 Pages: 114530-114530

    • DOI

      10.1016/j.icarus.2021.114530

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Size of particles ejected from an artificial impact crater on asteroid 162173 Ryugu2021

    • Author(s)
      Wada K.、Ishibashi K.、Kimura H.、Arakawa M.、Sawada H.、Ogawa K.、Shirai K.、Honda R.、Iijima Y.、Kadono T.、Sakatani N.、Mimasu Y.、Toda T.、Shimaki Y.、Nakazawa S.、Hayakawa H.、Saiki T.、Takagi Y.、Imamura H.、Okamoto C.、Hayakawa M.、Hirata N.、Yano H.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 647 Pages: A43-A43

    • DOI

      10.1051/0004-6361/202039777

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Experimental study concerning the oblique impact of low- and high-density projectiles on sedimentary rocks2021

    • Author(s)
      Suzuki Ayako I.、Fujita Yoichi、Harada Shunya、Kiuchi Masato、Koumoto Yasunari、Matsumoto Eri、Omura Tomomi、Shigaki Sae、Taguchi Erine、Tsujido Sayaka、Kurosawa Kosuke、Hasegawa Sunao、Hirai Takayuki、Tabata Makoto、Tamura Hideki、Kadono Toshihiko、Nakamura Akiko M.、Arakawa Masahiko、Sugita Seiji、Ishibashi Ko
    • Journal Title

      Planetary and Space Science

      Volume: 195 Pages: 105141-105141

    • DOI

      10.1016/j.pss.2020.105141

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] Sticking of microparticles in high-velocity impact and implication for disk evolution2023

    • Author(s)
      T. Kadono, H. Kobayashi
    • Organizer
      Protostars and planets VII
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pattern in ejecta curtain generated by the impact into granular targets of various sized particles2023

    • Author(s)
      T. Kadono
    • Organizer
      Japan Geoscience Union Meeting 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] エジェクタカーテン中のパターンと標的粒子のサイズ分布2023

    • Author(s)
      T. Kadono
    • Organizer
      日本惑星科学会
    • Related Report
      2022 Annual Research Report

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Published: 2021-04-28   Modified: 2024-12-25  

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