| Project/Area Number |
61540284
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
物理学一般
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| Research Institution | RIKEN ( The Institute of Physical and Chemical Research ) |
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Principal Investigator |
TONUMA Tadao RIKEN(The Institute of Physical and Chemical Research), リニアック研究室, 研究員 (90087396)
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| Co-Investigator(Kenkyū-buntansha) |
WATANABE Tsutomu RIKEN(The Institute of Physical and Chemical Research), 原子過程研究室, 主任研究員 (40010714)
裴 碩喜 (べい 碩喜) 理化学研究所, サイクロトロン研究室, 研究員 (30125231)
MATSUO Takashi Department of Pathology, Medical Research Institute, Tokyo Medical and Dental Un, 原子過程研究室, 嘱託 (00165771)
KUMAGAI Hidekazu RIKEN(The Institute of Physical and Chemical Research), リニアック研究室, 技師 (80142107)
TAWARA Hiroyuki Institute of Plasma Physics, Nagoya University, プラズマ研究所・情報センター, 助教授 (90037797)
BE Suck Hee RIKEN(The Institute of Physical and Chemical Research)
加瀬 昌之 理化学研究所, リニアック研究室, 研究員
〓 碩喜 理化学研究所, リニアック研究室, 研究員
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| Project Period (FY) |
1986 – 1988
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| Project Status |
Completed (Fiscal Year 1988)
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| Budget Amount *help |
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1988: ¥200,000 (Direct Cost: ¥200,000)
Fiscal Year 1987: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1986: ¥1,000,000 (Direct Cost: ¥1,000,000)
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| Keywords | Heavy ion impact / 原子・分子のイオン化 / 原子 / 分子のイオン化 |
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| Research Abstract |
Ne(Ar) secondary-ion production cross sections by projectiles of 1.05 MeV/amu Ne^<q+>(q=2-10) and Ar^<q+>(q=4-14) were measured using a projectile ion-secondary ion coincidence technique where the final charge states of both collision partners were detected simultaneously. The coincidence measurments were able to distingush pure ionization without any change of projectile charge, electron loss and capture ionization of projectiles. Average charge states of the secondary ions produced through electron loss and capture ionization were compared with total charge changing cross sections of projectiles. The present data indicated that the average seconday ion charge states increase with increasing the incident projectile charge q and the number of loss and capture electrons from/into projectiles whereas the charge changing cross sections of projectiles decrease steeply with increasing q in the range of low charge states for loss ionization and increase rapidly with increasing q in the range of high charge states for capture ionization.
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