6.2.4　Ionization of Gaseous Molecules by 6 MeV/u Heavy Ion Impact

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  • Matsuo Takashi
    Faculty of Engineering, Kanagawa Institute of Technology
  • Kohno Toshiyuki
    Radioisotope Research Center, Tokyo Institute of Technology
  • Ohno Yumiko
    School of Radiological Technology, Gunma Prefectural College of Health Sciences
  • Watanabe Shin-ichi
    Faculty of Engineering, Kanagawa Institute of Technology
  • Murakami Takeshi
    Department of Accelerator and Medical Physics, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology

Bibliographic Information

Other Title
  • 6.2.4　6 MeV/u重イオン衝突による気体分子の電離過程
  • 6MeV/u重イオン衝突による気体分子の電離過程
  • 6MeV/uジュウ イオン ショウトツ ニ ヨル キタイ ブンシ ノ デンリ カテイ

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Abstract

<p>Absolute values of net ionization cross sections and partial ionization cross sections in bare ion (charge state q=1–18) impact on simple molecules have been measured at a fixed collision energy of 6 MeV/u. The net cross sections have been found to depend weakly on the projectile charge q compared with the q2-dependence predicted by the first Born approximation, especially for high charge projectiles and/or heavy target elements. For hydrocarbon molecules, a scaling law of net ionization cross sections including collision energy, projectile charge and number of valence electrons has been proposed. Moreover, isomer effect in dissociation and production of negative ions have been studied.</p>

Journal

  • RADIOISOTOPES

    RADIOISOTOPES 68 (8), 529-537, 2019-08-15

    Japan Radioisotope Association

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