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学科主题: 物理化学
题名: Photodissociation Dynamics of o-Nitrobenzoic Acid
作者: Zhou CH(周灿华) ;  Cheng SB(程世博) ;  Sun JL(孙巨龙) ;  Yin HM(尹鸿鸣) ;  Han KL(韩克利) ;  He GZ(何国钟)
会议名称: XXIII International Symposium on Molecular Beams
会议日期: 2009-6-1
出版日期: 2009-06-01
会议地点: 中国
通讯作者: 尹鸿鸣
部门归属: 十一室
主办者: 中国科学院大连化学物理研究所分子反应动力学国家重点实验室
摘要: Photodissociation dynamics of o-nitrobenzoic acid at 295 and 355 nm was studied by probing the nascent OH photoproduct employing the single-photon laser induced fluorescence technique. At both the photolysis wavelengths, the OH fragments are found to be vibrationally cold but have different rotational state distributions. Upon photolysis at 295 nm, the relative population of OH in different rotational states does not follow Boltzmann equilibrium distribution, whereas upon photolysis at 355 nm, a perfect Boltzmann distribution is observed with a rotational temperature of 1010 ± 100 K. Between the two spin-orbit states, 2Π3/2 and 2Π1/2, the former is found to be preferentially populated and the distribution of the Π(A′) state for the Λ-doublet is dominant at both the wavelengths studied. Several possible dissociation pathways of o-nitrobenzoic acid leading to formation of the OH fragment were investigated computationally. Based on the theoretical and experimental studies, a possible mechanism of OH formation from the photodissociation of o-nitrobenzoic acid at 295 and 355 nm is proposed.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113950
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Zhou CH,Cheng SB,Sun JL,et al. Photodissociation Dynamics of o-Nitrobenzoic Acid[C]. 见:XXIII International Symposium on Molecular Beams. 中国. 2009-6-1.
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