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首页> 外文期刊>Bulletin of the Chemical Society of Japan >C-Ion- and X-ray-Induced Sucrose Radicals Investigated by CW EPR and 9GHz EPR Imaging
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C-Ion- and X-ray-Induced Sucrose Radicals Investigated by CW EPR and 9GHz EPR Imaging

机译：C-ION-和X射线诱导的蔗糖基团由CW EPR和9GHz EPR成像研究

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摘要

We investigated stable radical distribution and particle tracks in sucrose irradiated by C-ion irradiation with continuous wave (CW) electron paramagnetic resonance (EPR) and 9 GHz EPR imaging. Both EPR results were compared with X-ray irradiation at a similar dose. Radical distribution in sucrose crystals induced by C-ion and X-ray irradiation were completely different. The 2D EPR imaging results suggested that radical species were mostly located inside the sucrose crystal. Fewer radicals were found on the surface region of the sucrose crystal. The high radical intensities in relation to the C-ion energy deposition are clearly observed at Bragg peak region. No trace of the stable radicals was found after the peak region. The stable radicals of sucrose were distributed as a result of recombination of radicals induced by particle interaction. For the first time, the present EPR images showed the stable radical distribution and particle tracks in the crystal in association with particle-sucrose interaction.
机译：通过连续波（CW）电子顺磁共振（EPR）和9GHz EPR成像，通过C离子照射照射的蔗糖中稳定的自由基分布和粒径。将EPR结果与类似剂量的X射线照射进行比较。 C离子和X射线照射诱导的蔗糖晶体中的自由基分布完全不同。 2D EPR成像结果表明自由基物种主要位于蔗糖晶体内。在蔗糖晶体的表面区域上发现了更少的基团。在布拉格峰区域清楚地观察到关于C离子能量沉积的高自由基强度。在峰值区域之后没有发现稳定的稳定基团的痕迹。由于颗粒相互作用诱导的基团的重组，分布蔗糖的稳定基团。首次，目前的EPR图像显示与颗粒 - 蔗糖相互作用相关的晶体中稳定的自由基分布和粒子轨道。

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    Nakagawa Kouichi; Hara Hideyuki; Matsumoto Ken-Ichiro;

  • 作者单位

    Hirosaki Univ Grad Sch Hlth Sci Div Reg Innovat 66-1 Hon Cho Hirosaki Aomori 0368564 Japan;

    Bruker BioSpin KK Kanagawa Ku 3-9 Moriya Cho Yokohama Kanagawa 2210022 Japan;

    Natl Inst Radiol Sci Natl Inst Quantum &

    Radiol Sci &

    Technol Dept Basic Med Sci Radiat Damages Quantitat RedOx Sensing Team 4-9-1 Anagawa Chiba 2638555 Japan;

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  • 正文语种 eng
  • 中图分类 化学;
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