Vibrationally Resolved Photofragment Translational Spectroscopy of CH3I from 277 to 304 nm with Increasing Effect of the Hot Band
文献类型：期刊论文
| 作者 | Cheng, Min1,2; Yu, Zijun1,2; Hu, Lili1,2; Yu, Dan1,2; Dong, Changwu1,2; Du, Yikui1; Zhu, Qihe1 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY A
 |
| 出版日期 | 2011-02-24 |
| 卷号 | 115期号:7页码:1153-1160 |
| ISSN号 | 1089-5639 |
| DOI | 10.1021/jp106624q |
| 英文摘要 | The photodissociation dynamics of CH3I from 277 to 304 nm is studied with our mini-TOF photofragment translational spectrometer. A single laser beam is used for both photodissociation of CH3I and REMPI detection of iodine. Many resolved peaks in each photofragment translational spectrum reveal the vibrational states of the CH3 fragment. There are some extra peaks showing the existence of the hot-band states of CH3I. After careful simulation with consideration of the hot-band effect, the distribution of vibrational states of the CH3 fragment is determined. The fraction sigma of photofragments produced from the hot-band CH3I varies from 0.07 at 277.38 nm to 0.40 at 304.02 nm in the I* channel and from 0.05 at 277.87 nm to 0.16 at 304.67 nm in the I channel. E-int/E-avl of photofragments from ground-state CH3I remains at about 0.03 in the I* channel for all four wavelengths, but E-int/E-avl decreases from 0.09 at 277.87 run to 0.06 at 304.67 nm in the I channel. From the ground-state CH3I, the quantum yield Phi(I*) is determined to be 0.59 at 277 nm and 0.05 at 304 nm. The curve-crossing probability P-cc from the hot-band CH3I is lower than that from the ground-state CH3I. The potential energy at the curve-crossing point is determined to be 32 740 cm(-1). |
| 语种 | 英语 |
| WOS记录号 | WOS:000287337900001 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/72529]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Du, Yikui |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Min,Yu, Zijun,Hu, Lili,et al. Vibrationally Resolved Photofragment Translational Spectroscopy of CH3I from 277 to 304 nm with Increasing Effect of the Hot Band[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2011,115(7):1153-1160. |
| APA | Cheng, Min.,Yu, Zijun.,Hu, Lili.,Yu, Dan.,Dong, Changwu.,...&Zhu, Qihe.(2011).Vibrationally Resolved Photofragment Translational Spectroscopy of CH3I from 277 to 304 nm with Increasing Effect of the Hot Band.JOURNAL OF PHYSICAL CHEMISTRY A,115(7),1153-1160. |
| MLA | Cheng, Min,et al."Vibrationally Resolved Photofragment Translational Spectroscopy of CH3I from 277 to 304 nm with Increasing Effect of the Hot Band".JOURNAL OF PHYSICAL CHEMISTRY A 115.7(2011):1153-1160. |
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来源：化学研究所
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