The radiation effects of Aspergillus oryzae spores with soft x-rays near the K shell absorption edges of C, N, O elements from synchrotron radiation

CHEN Liang; JIANG Shiping; WAN Libiao; MA Xiaodong; LI Meifang

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The radiation effects of Aspergillus oryzae spores with soft x-rays near the K shell absorption edges of C, N, O elements from synchrotron radiation

更新时间：2023-03-30

- The radiation effects of Aspergillus oryzae spores with soft x-rays near the K shell absorption edges of C, N, O elements from synchrotron radiation
- Journal of Radiation Research and Radiation Processing Vol. 25, Issue 4, Pages: 243-247(2007)
- 作者机构：
  
  1.中国科学技术大学国家同步辐射实验室　合肥　230029
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CHEN Liang, JIANG Shiping, WAN Libiao, et al. The radiation effects of Aspergillus oryzae spores with soft x-rays near the K shell absorption edges of C, N, O elements from synchrotron radiation. [J]. Journal of Radiation Research and Radiation Processing 25(4):243-247(2007)
DOI：

CHEN Liang, JIANG Shiping, WAN Libiao, et al. The radiation effects of Aspergillus oryzae spores with soft x-rays near the K shell absorption edges of C, N, O elements from synchrotron radiation. [J]. Journal of Radiation Research and Radiation Processing 25(4):243-247(2007) DOI：

摘要

以C、N、O元素的K吸收边附近能量的软X射线为辐射光源，通过模型分析，比较了米曲霉孢子不同部位对不同能量软X射线吸收剂量分布。同时利用合肥同步辐射软X射线显微术光束线准单色的软X射线对孢子进行辐照实验，对不同能量辐照存活率结果进行了比较。理论分析表明，由于C、N、O元素K吸收边效应以及孢子不同部位元素组成的不同，受照时孢子不同部位对软X射线的吸收剂量分布随能量变化存在差异。实验结果显示，3种元素K吸收边附近软X射线对米曲霉孢子均有很强的辐射失活效应，其中2.3nm波长的软X射线对孢子的辐射损伤效应要高于3.2nm和4.4nm波长的软X射线。

Abstract

The dose deposition of different parts of Aspergillus oryzae spores were analyzed with soft X -ray energies near the K-shell absorption edges of C, N, O elements (4.4nm, 3.2nm and 2.3nm), respectively. At the same time, the spores were irradiated with the three wavelengths of soft X-rays on the soft X -ray microscopy from synchrotron radiation at NSRL, and the survivals were compared. The theoretical analyses showed that the deposition doses of different parts of the spore were varying with X -ray energies because of the effects of C, N, O K-shell absorption edges and elemental contents of the different parts of spore. The experimental studies proved three wavelengths of soft X -rays all had high killing abilities. Among these, 2.3nm wavelength X -rays had higher radiation damage to spore than that of 3.2nm, 4.4nm.

关键词

同步辐射软X射线孢子剂量分布存活率

Keywords

Synchrotron radiationSoft X-raysSporesDose depositionSurvivals

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1(Wenzhou Medical University,,)

2(Jiading campus, Shanghai Institute of Applied Physics, Chinese Academy of Sciences,,)

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