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时间切片离子速度成像技术关于MgO在193 nm的光解反应动力学研究
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作者 李芳芳 马玉杰 +3 位作者 刘嘉兴 闫东 徐昂 王凤燕 《Chinese Journal of Chemical Physics》 SCIE EI CAS CSCD 2022年第2期257-262,I0001,共7页
本文利用时间切片离子速度成像技术对MgO分子在193 nm下的光解反应动力学进行了研究.实验通过产物M g的速度和角度分布分析,发现了三个光解反应路径.路径一为MgO(X^(1)∑^(+))态分子吸收一个光子到MgO(G^(1)Π)态,山于G^(1)Π,3^(3)Π和... 本文利用时间切片离子速度成像技术对MgO分子在193 nm下的光解反应动力学进行了研究.实验通过产物M g的速度和角度分布分析,发现了三个光解反应路径.路径一为MgO(X^(1)∑^(+))态分子吸收一个光子到MgO(G^(1)Π)态,山于G^(1)Π,3^(3)Π和1^(5)Π态之间的自旋轨道耦合作用,反应沿着1^(5)Π的势能面解离生成产物Mg(^(3)P_(u))+O(^(3)P_(g)).路径二、三分别为MgO(A^(1)Π)态分子吸收一个光子到MgO(G^(1)Π)态和MgO(4^(1)Π)态,进而解离生成产物Mg(^(3)P_(u))+O(^(3)P_(g))和Mg(^(1)S_(g))+O(^(1)S_(g)).光解离路径的各向异性参数与振动能级的寿命以及转动和振动自旋轨道态的耦合有关.从总动能分析得到D_(0)(Mg-O)=21645±50 cm^(-1). 展开更多
关键词 时间切片离子速度成像 光解反应 MGO 振动态 激发态 193 nm
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气相金属原子特定量子态反应动力学的先进技术综述
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作者 徐昂 马玉杰 +3 位作者 闫东 李芳芳 刘嘉兴 王凤燕 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2021年第1期61-70,I0011,共11页
现代分子反应动力学主要研究内容之一是描述“量子态到量子态”基元化学反应过程,其中激发态分子反应动力学的相关研究有助于检验现代化学理论的有效性,并提供化学反应控制的有效方法.本文综述了近年来用于研究气相金属原子反应动力学... 现代分子反应动力学主要研究内容之一是描述“量子态到量子态”基元化学反应过程,其中激发态分子反应动力学的相关研究有助于检验现代化学理论的有效性,并提供化学反应控制的有效方法.本文综述了近年来用于研究气相金属原子反应动力学的实验技术.通过这些技术,可以获得新生产物的内能分布、角分布或三维立体动力学反应性等信息.特别是通过制备具有特定激发态或轨道排列的金属原子,不同电子态的反应性可以丰富金属反应动力学中电子转移机制的相关认识. 展开更多
关键词 时间切片离子速度成像 交叉分子束 激光溅射 金属原子 反应动力学 立体动力学
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利用时间切片离子速度成像技术对AlO在193 nm的光解反应动力学研究
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作者 李芳芳 马玉杰 +2 位作者 刘嘉兴 王冠军 王凤燕 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2020年第5期649-652,I0079,共5页
本文利用时间切片离子速度成像技术对AlO分子在193 nm下的光解反应动力学进行了研究.实验通过产物Al^+的离子速度和角度分布分析,发现了两个光解离反应通道,分别为中性AlO分子的单光子解离生成产物Al(2Pu)+O(3Pg)的通道,和AlO分子吸收... 本文利用时间切片离子速度成像技术对AlO分子在193 nm下的光解反应动力学进行了研究.实验通过产物Al^+的离子速度和角度分布分析,发现了两个光解离反应通道,分别为中性AlO分子的单光子解离生成产物Al(2Pu)+O(3Pg)的通道,和AlO分子吸收两个光子电离产生AlO^+进而解离生成产物为Al^+(1Sg)+C(3Pg)的反应通道.每一个解离通道包括了AlO(v=0~2)振动态的贡献,其中中性解离反应通道与离子解离反应通道相比,产物的各向异性参数对AlO的振动态依赖更大. 展开更多
关键词 时间切片离子速度成像 光解反应 ALO 振动态 193 nm
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Y+SO2反应动力学成像
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作者 闫东 马玉杰 +3 位作者 李芳芳 刘嘉兴 王冠军 王凤燕 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2020年第2期239-242,I0003,共5页
本文利用时间切片离子速度成像技术、交叉分子束和激光溅射技术研究了高碰撞能下(36 kcal/mol)钇原子与二氧化硫分子的反应动力学.利用多光子电离在482∽615 nm的波长范围内得到了产物YO的时间切片离子速度成像.YO的切片图像显示其较宽... 本文利用时间切片离子速度成像技术、交叉分子束和激光溅射技术研究了高碰撞能下(36 kcal/mol)钇原子与二氧化硫分子的反应动力学.利用多光子电离在482∽615 nm的波长范围内得到了产物YO的时间切片离子速度成像.YO的切片图像显示其较宽的速度分布和前-后向散射为主的角分布,其中前向散射信号明显强于后向散射.这种空间分布暗示了该反应通过一个中间体进行,且中间体的寿命不超过一个转动周期.中间体的形成意味着该氧化反应电子转移机理的发生. 展开更多
关键词 时间切片离子速度成像 交叉分子束 激光溅射 金属原子反应动力学 二氧化硫
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在193nm关于Si2分子的离子解离动力学的成像研究(英文)
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作者 马玉杰 李芳芳 +1 位作者 刘嘉兴 王凤燕 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2019年第1期129-133,I0003,共6页
在193nm的单色激光实验中,本文利用时间切片离子速度成像技术,研究了经193nm双光子电离得到的Si2+的解离反应动力学过程.根据实验得到的Si+离子的速度成像,观测到了两种离子直接解离通道:Si(3Pg)+Si+(2Pu)和Si(1D2)+Si+(2Pu).电子基态的... 在193nm的单色激光实验中,本文利用时间切片离子速度成像技术,研究了经193nm双光子电离得到的Si2+的解离反应动力学过程.根据实验得到的Si+离子的速度成像,观测到了两种离子直接解离通道:Si(3Pg)+Si+(2Pu)和Si(1D2)+Si+(2Pu).电子基态的Si2分子处于v=0∽5的振动态上,其经过双光子电离后激发到Si2+离子的多个电子激发态势能面,生成主要通道Si(3Pg)+Si+(2Pu),其中v=1的解离信号最强.此外,由于势能曲线22Πg与32Πg相同对称性引起的避免性势能面交叉,生成次要反应通道Si(1D2)+Si+(2Pu).通道Si(1D2)+Si+(2Pu)的产物亦可以由生成的基态Si2+(X4Σg-)吸收一个193 nm光子后解离得到,其对应产物则具有更大的动能. 展开更多
关键词 切片成像 光解动力学 硅二聚体 193nm
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Baishideng’s Reference Citation Analysis database announces the first Journal Article Influence Index of 101 core journals and a list of high-quality academic journals in gastroenterology and hepatology 被引量:1
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作者 Jin-Lei Wang yu-jie ma +3 位作者 Li ma Na ma Diao-Mei Guo Lian-Sheng ma 《World Journal of Gastroenterology》 SCIE CAS 2022年第37期5383-5394,共12页
After three rounds of rigorous evaluation of core journals in gastroenterology andhepatology conducted by the Reference Citation Analysis (RCA) editorial team ofBaishideng Publishing Group (Baishideng), the RCA databa... After three rounds of rigorous evaluation of core journals in gastroenterology andhepatology conducted by the Reference Citation Analysis (RCA) editorial team ofBaishideng Publishing Group (Baishideng), the RCA database of Baishidengofficially released the 2022 Journal Article Influence Index (2022 JAII) of 101 corejournals in gastroenterology and hepatology, for the first time. The list of 101 corejournals can be found at: https://www.referencecitationanalysis.com/Search-Journal. Among them, the highest 2022 JAII is 48.014 and the lowest is 3.900. Thisarticle highlights the top 20 journals, describes the calculation method for the 2022JAII, the evaluation process, and the inclusion principles for journals in the RCA.These steps are the underpinning of the RCA’s empirical journal academicevaluation service by which the digital platform addresses the needs of authors toselect reliable journals for submission, readers to select high-quality literature forreading, and editors to track their own journal citation performance. As such, theRCA core journal list will serve as a useful Find-a-Journal tool. Any interestedparty is welcome to use this journal list and recommend it to their peers. 展开更多
关键词 Reference Citation Analysis Journal Article Influence Index Gastroenterology and hepatology Journal list Find a journal Announcement
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Baishideng’s Reference Citation Analysis database announces the first Journal Article Influence Index of 104 core journals and a list of high-quality academic journals in orthopedics 被引量:1
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作者 Jin-Lei Wang yu-jie ma +3 位作者 Li ma Na ma Diao-Mei Guo Lian-Sheng ma 《World Journal of Orthopedics》 2022年第10期891-902,共12页
After three rounds of rigorous evaluation of core journals in orthopedics conducted by the Reference Citation Analysis(RCA)editorial team of Baishideng Publishing Group(Baishideng),the RCA database of Baishideng offic... After three rounds of rigorous evaluation of core journals in orthopedics conducted by the Reference Citation Analysis(RCA)editorial team of Baishideng Publishing Group(Baishideng),the RCA database of Baishideng officially released the 2022 Journal Article Influence Index(2022 JAII)of 104 core journals and a list of high-quality academic journals in orthopedics,for the first time on August 9,2022.The list of 104 core journals can be found at:https://www.referencecitationanalysis.com/SearchJournal.Among them,the highest 2022 JAII is 55.015 and the lowest is 3.076.This article introduces the 21 high-quality academic journals and describes the calculation method for the 2022 JAII,the evaluation process,and the inclusion principles for journals in the RCA.These steps are the underpinning of the RCA’s empirical journal academic evaluation service by which the digital platform addresses the needs of authors to select reliable journals for submission,readers to select high-quality literature for reading,and editors to track their own journal citation performance.As such,the RCA core journal list will serve as a useful Find-a-Journal tool.Any interested party is welcome to use this journal list and recommend it to their peers. 展开更多
关键词 Reference Citation Analysis Journal Article Influence Index ORTHOPEDICS Journal list Find a journal Announcement
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Acute methanol poisoning with bilateral diffuse cerebral hemorrhage:A case report
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作者 Jin Li Zhi-Juan Feng +1 位作者 Lei Liu yu-jie ma 《World Journal of Clinical Cases》 SCIE 2022年第19期6571-6579,共9页
BACKGROUND Acute methanol poisoning(AMP)is a systemic disease that mainly affects the central nervous system and is characterized by ocular damage and metabolic acidosis.If appropriate treatments are inadequate or del... BACKGROUND Acute methanol poisoning(AMP)is a systemic disease that mainly affects the central nervous system and is characterized by ocular damage and metabolic acidosis.If appropriate treatments are inadequate or delayed,the mortality can exceed 40%.As the most serious complication,cerebral hemorrhage is rare with reported prevalence of 7%-19%.CASE SUMMARY A 62-year-old man drank liquor mixed with 45%methanol and 35%alcohol.His vision blurred 10 h later and he fell into coma in another 9 h.Serum toxicological tests were performed immediately,and continuous renal replacement therapy(CRRT)was carried out as the lactic acid exceeded 15 mmol/L and blood pH was 6.78.In addition,the toxicological report revealed 1300.5μg/mL of methanol in serum and 1500.2μg/mL in urine.After 59 h of CRRT,the methanol level decreased to 126.0μg/mL in serum and 151.0μg/mL in urine.However,the patient was still unconscious and his pupillary light reflex was slow.Computed tomography showed hemorrhage in the left putamen.After 16 d of life support treatment,putamen hemorrhage developed into diffuse symmetric intracerebral hemorrhage.In the end,his family gave up and the patient was discharged,and died in a local hospital.CONCLUSION Cerebral hemorrhage requires constant vigilance during the full course of treatment for severe cases of AMP. 展开更多
关键词 Acute methanol poisoning Cerebral hemorrhage Toxicity HEMODIALYSIS Case report
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Baishideng’s Reference Citation Analysis database announces the first Article Influence Index of multidisciplinary scholars
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作者 Jin-Lei Wang yu-jie ma +3 位作者 Li ma Na ma Diao-Mei Guo Lian-Sheng ma 《World Journal of Clinical Cases》 SCIE 2022年第29期10391-10398,共8页
After three rounds of rigorous evaluation of registered scholars conducted by the Reference Citation Analysis(RCA)editorial team of Baishideng Publishing Group(Baishideng),the RCA database of Baishideng officially rel... After three rounds of rigorous evaluation of registered scholars conducted by the Reference Citation Analysis(RCA)editorial team of Baishideng Publishing Group(Baishideng),the RCA database of Baishideng officially released the 2022 Article Influence Index(2022 AII)of 632 scholars from 74 countries/territories in 98 research categories,for the first time.The list of 632 scholars can be found at:https://www.referencecitationanalysis.com/searchscholar.Among them,the highest 2022 AII is 348.211,the highest number of total citations is 42830,and the highest number of total articles is 901.The category with the largest number of RCA scholars is Gastroenterology&Hepatology,with a total of 100(15.8%),and the second is Surgery,with a total of 46(7.3%).This article summarizes the RCA scholars and describes the mission of RCA,the openness and transparency of RCA evaluation,the calculation method for the 2022 AII,and the evaluation process of RCA scholars.The RCA scholar list will effectively serve as a useful Find-a-Scholar tool.Any interested scholar is welcome to register and join this RCA scholar list. 展开更多
关键词 Reference Citation Analysis Article Influence Index Scholar list Find a scholar Announcement
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