Study of Chemical Processing of Carbonaceous Dust

含碳粉尘化学处理研究

• 批准号: 14540224
• 负责人: WADA Setsuko
• 金额: $ 2.37万
• 依托单位: The University of Electro-Communications
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14540224/
• 关键词: Carbonaceous dust; processing of dusts; diamond; plasma; infrared spectra; interstellar; mass-spectrum; 赤外スペクトル; 星間塵; 実験; 炭素質物質; メタン; PAH; QCC; 星周塵

We studied chemical processing of carbonaceous dusts in interstellar medium.(1)Hydrogenation of diamond powders. Diamond is a component of carbonaceous dusts. We heated diamond powders with different particle sizes in a hydrogen atmosphere or in a hydrogen plasma. Experiments showed that the infrared spectrum of C-H of nanodiamond was different from that of submicron-micron sized diamond. (Annual Meting of Japanese Astronomical Society, 2002, 2003, cluster-riyou-gijutsu-kennkyukai)(2)Surface reaction of carbonaceous dust with oxygen and nitrogen. We setup an apparatus of plasma processing with a radio frequency generator (13.56MHz). Using this apparatus, we tried to make a functional group of OCN on the surface of a synthesized carbonaceous material (QCC) after a reaction with plasmic gas of N_2 and O_2. However, we could not detected the functional group. We will continue the experiment further.(3)Carbon isotopes in carbonaceous dusts. We synthesized carbonaceous materials (QCC) with various isotopic rations of^<13>C/^<12>C and measured their infrared absorption spectra. Using the results, we analyzed spectra of various celestial objects. (Astron. & Astrophys. 407,551,2003)(4)Study for dust formation process -analysis of gases. Using a mass-spectrometer, we analyzed gases formed together with QCC. We obtained various mass-spectra under different experimental conditions. (Annual Meeting of Japanese Astronomical Society, 2003)

我们研究了星际介质中碳质粉尘的化学过程。（1）金刚石粉末的氢化。金刚石是含碳粉尘的一种成分。我们在氢气氛或氢等离子体中加热不同粒度的金刚石粉末。实验表明，纳米金刚石的碳氢红外光谱与亚微米级金刚石的碳氢红外光谱不同。（日本天文学会年会，2002年，2003年，cluster-riyou-gijutsu-kennkyukai）（2）碳质尘埃与氧和氮的表面反应。我们用射频发生器（13.56MHz）建立了一套等离子体处理装置。利用该装置，我们尝试了在合成碳材料（QCC）的表面上，通过N_2和O_2等离子体气体的反应，制备OCN官能团。然而，我们无法检测到官能团。我们将继续进一步的实验。（3）碳质粉尘中的碳同位素。合成了不同碳同位素比的碳质材料（QCC）<13>，<12>并测定了它们的红外吸收光谱。利用这些结果，我们分析了各种天体的光谱。（Astron. &amp; Astrophys.）407，551，2003）（4）粉尘形成过程研究-气体分析。使用质谱仪，我们分析了与QCC一起形成的气体。在不同的实验条件下，我们得到了不同的质谱。（日本天文学会年会，2003年）

项目成果

S.Wada et al.: "^<13>C isotopic effects on infrared bands of quenched carbonaceous composite (QCC)"Astron.& Astrophys.. 407. 551-562 (2003)

S.Wada等人：“13C同位素对淬火碳质复合材料(QCC)的红外波段的影响”Astron。

S.Wada, T.Onaka, I.Yamamura, Y.Murata, A.T.Tokunaga: "^<13>C isotopic effects on infrared bands of quenched carbonaceous composite (QCC)"Astron.Astrophys.. Vol.407. 551-562 (2003)

S.Wada、T.Onaka、I.Yamamura、Y.Murata、A.T.Tokunaga：“^ 13 C同位素对淬火碳质复合材料(QCC)的红外波段的影响”Astron.Astrophys.. Vol.407。