Optical Absorption Cross-Section of DNA Bases—Thymine and Guanine—in the Energy Region from 3.1 to 250 eV (5–400 nm)

Kaveenga Rasika Koswattage; Yudai Izumi; Kazumichi Nakagawa

首页> 外文期刊>Quantum Beam Science >Optical Absorption Cross-Section of DNA Bases—Thymine and Guanine—in the Energy Region from 3.1 to 250 eV (5–400 nm)

【24h】

Optical Absorption Cross-Section of DNA Bases—Thymine and Guanine—in the Energy Region from 3.1 to 250 eV (5–400 nm)

机译：DNA碱基和鸟嘌呤的光学吸收横截面从3.1到250eV（5-400nm）的能量区域

获取原文

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

(1) Background: Optical absorption cross-section—the absolute absorption intensity specific to each molecule—of nucleic acid bases enables us to estimate the reaction yields of DNA lesions induced by the exposure to not only photons but also ionizing radiations. However, it was unknown in the energy region exceeding ~10 eV (wavelength ~120 nm). (2) Methods: Thin films of DNA bases—thymine and guanine—were prepared using a vacuum sublimation technique. Absorption spectra of these films were measured in the energy region from 3.1 to 250 eV (5–400 nm) at the synchrotron radiation facility UVSOR. (3) Results: The absorption spectra of both bases exhibited prominent absorption peaks around 20 eV and smaller peaks in the energy region below 10 eV. The determined optical oscillator strength distribution was verified to be reasonable based on the Thomas–Reiche–Kuhn oscillator strength sum rule. (4) Conclusion: Most of the oscillator strength distribution was positioned in the measured energy region, and therefore the absorption spectra significantly contributed to the quantitative study for the photo and radiation-chemical reactions of DNA.

机译：（1）背景：光学吸收横截面 - 对每个分子核酸碱基的绝对吸收强度使我们能够估计暴露于光子的暴露而且也是电离辐射诱导的DNA病变的反应产率。然而，在超过〜10eV的能量区域中未知（波长和120nm）。（2）方法：使用真空升华技术制备DNA碱基和鸟嘌呤的薄膜。在同步辐射设施UVSOR的3.1至250eV（5-400nm）的能量区域中测量这些薄膜的吸收光谱。（3）结果：两种碱基的吸收光谱在10eV低于10eV的能量区域中呈现突出的吸收峰和较小的峰。基于Thomas-Reiche-Kuhn振荡器强度规则，验证了确定的光学振荡器强度分布是合理的。（4）结论：大多数振荡器强度分布定位在测量的能量区域中，因此吸收光谱显着促进了DNA照片和辐射 - 化学反应的定量研究。

著录项

来源
《Quantum Beam Science》 |2020年第3期|共7页
作者
Kaveenga Rasika Koswattage; Yudai Izumi; Kazumichi Nakagawa;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种
中图分类物理学;
关键词
DNA basesabsorption spectroscopyoscillator strengthThomas–Reiche–Kuhn oscillator strength sum rule;

机译：DNA BaseAballing Spectroscopy轿车强度 - Reiche-Kuhn振荡器强度和规则;

相似文献

外文文献
专利

1. Transmission measurement of photo-absorption cross section of aluminum in soft X-ray region of 50 to 250 eV [J] . CHEN Kai, CUI Ming-Qi, ZHENG Lei 中国物理C（英文版） . 2008,第008期
2. Optical Oscillator Strengths of Hydrogen Bromide in the 4.5-20 eV Excitation Energy Region [J] . 李文斌, 朱林繁, 刘小井, 中国物理快报：英文版 . 2004,第004期
3. Optical Oscillator Strengths of Hydrogen Chloride in the Energy Region of 5.5-20 eV [J] . 李文斌, 朱林繁, 刘小井, 中国物理快报：英文版 . 2003,第012期
4. A PIID-DTBT based semi-conducting polymer dots with broad and strong optical absorption in the visible-light region： Highly effective contrast agents for multiscale and multi-spectral photoacoustic imaging [J] . Jian Zhang1, Haobin Chen2, Ting Zhou3, 纳米研究：英文版 . 2017,第001期
5. A PIID-DTBT based semi-conducting polymer dots with broad and strong optical absorption in the visible-light region: Highly effective contrast agents for multiscale and multi-spectral photoacoustic imaging [J] . Jian Zhang, Haobin Chen, Ting Zhou, 纳米研究（英文版） . 2017,第001期
6. Optical Absorption Cross-Section of DNA Bases—Thymine and Guanine—in the Energy Region from 3.1 to 250 eV (5–400 nm) [J] . Kaveenga Rasika Koswattage, Yudai Izumi, Kazumichi Nakagawa Quantum Beam Science . 2020,第3期

机译：DNA碱基和鸟嘌呤的光学吸收横截面从3.1至250eV（5-400nm）的能量区域
7. The temperature and pressure dependence of the absorption cross-sections of NO_2 in the 250-800 nm region measured by Fourier-transform spectroscopy [J] . S. Voight, J. Orphal, J. P. Burrows Journal of Photochemistry and Photobiology, A. Chemistry . 2002,第1a3期

机译：傅里叶变换光谱法测量250-800 nm区域NO_2吸收截面的温度和压力依赖性
8. Fabrication of high-quality long-fiber Bragg grating by monitoring 3.1-eV radiation (400 nm) from GeO defects [J] . Komukai T., Nakazawa M. IEEE Photonics Technology Letters . 1996,第11期

机译：通过监测来自GeO缺陷的3.1 eV辐射（400 nm）来制造高质量的长纤维布拉格光栅
9. DNA base damage: A Car-Parrinello Molecular Dynamics Study of Guanine and Thymine with an OH Radical [C] . Nanotechnology conference and trade show . 2003

机译：DNA碱基损伤：鸟嘌呤和胸腺嘧啶的汽车 - 帕隆罗分子动力学研究哦激进
10. Ab initio energy calculations and frontier orbital evaluation of rhodomyrtoxin B with the guanine-cytosine DNA base pair. [D] . Rozmus, Glenn F. 2005

机译：鸟嘌呤-胞嘧啶DNA碱基对的红球菌毒素B的从头算能量计算和前沿轨道评估。
11. Measurement of absorption and reduced scattering coefficients in Asian human epidermis dermis and subcutaneous fat tissues in the 400- to 1100-nm wavelength range for optical penetration depth and energy deposition analysis (Errata) [O] . Yu Shimojo, Takahiro Nishimura, Hisanao Hazama, 2021

机译：在400至1100nm波长范围内的亚洲人表皮真皮和皮下脂肪组织中的吸收和减少散射系数测量光学穿透深度和能量沉积分析（勘误）
12. Measurement of absorption and reduced scattering coefficients in Asian human epidermis, dermis, and subcutaneous fat tissues in the 400- to 1100-nm wavelength range for optical penetration depth and energy deposition analysis (Errata) [O] . Yu Shimojo, Takahiro Nishimura, Hisanao Hazama, 2021

机译：在400至1100nm波长范围内的亚洲人表皮，真皮和皮下脂肪组织中的吸收和减少散射系数测量光学穿透深度和能量沉积分析（勘误）
13. DNA Based Damage: A Car-Parrinello Molecular Dynamics Study of Guanine and Thymine with an OH Radical [R] . Wu, Y. , Mundy, C. J. , Colvin, M. E. , 2003

机译：基于DNa的损伤：鸟嘌呤和胸腺嘧啶与OH自由基的Car-parrinello分子动力学研究

Optical Absorption Cross-Section of DNA Bases—Thymine and Guanine—in the Energy Region from 3.1 to 250 eV (5–400 nm)

摘要

著录项

相似文献

相关主题

期刊订阅