The Experts below are selected from a list of 291 Experts worldwide ranked by ideXlab platform
Hiroshi Obase - One of the best experts on this subject based on the ideXlab platform.
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Formation of NO(A 2Σ+, C 2Πr, D 2Σ+) by the ion–ion Neutralization Reaction between NO+ and C6F6− at thermal energy
The Journal of Chemical Physics, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Yukio Nishimura, Hiroshi ObaseAbstract:The ion–ion Neutralization Reaction between NO+ (X 1Σ+:v‘=0) and C6F−6 has been spectroscopically studied in the flowing helium afterglow. In addition to the NO(A 2Σ+–X 2Πr) emission system, which has been found in the previous studies on the NO+/NO−2 and NO+/SF−6 Reactions, the NO(C 2Πr–X 2Πr, D 2Σ+–X 2Πr) emission systems are observed in the NO+/C6F−6 Reaction. The relative formation rates of NO(A), NO(C), and NO(D) are evaluated to be 1.0, 0.13±0.04, and 0.24±0.04, respectively. Only the v’=0 levels of NO(A,C,D) are formed, indicating that no energy is deposited into the vibration of NO(A,C,D). The rotational distributions of NO(A:v’=0), NO(C:v’=0), and NO(D:v’=0) are expressed by single Boltzmann rotational temperature of 500±50, 300±50, and 400±50 K, respectively. The average fractions of the total available energy deposited into rotation of NO(A), NO(C), and NO(D) are evaluated to be only 1.5±0.1%, 1.4±0.2%, and 1.9±0.2%, respectively. Most of all excess energy is expected to be partitioned into tra...
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formation of no a 2σ c 2πr d 2σ by the ion ion Neutralization Reaction between no and c6f6 at thermal energy
Journal of Chemical Physics, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Yukio Nishimura, Hiroshi ObaseAbstract:The ion–ion Neutralization Reaction between NO+ (X 1Σ+:v‘=0) and C6F−6 has been spectroscopically studied in the flowing helium afterglow. In addition to the NO(A 2Σ+–X 2Πr) emission system, which has been found in the previous studies on the NO+/NO−2 and NO+/SF−6 Reactions, the NO(C 2Πr–X 2Πr, D 2Σ+–X 2Πr) emission systems are observed in the NO+/C6F−6 Reaction. The relative formation rates of NO(A), NO(C), and NO(D) are evaluated to be 1.0, 0.13±0.04, and 0.24±0.04, respectively. Only the v’=0 levels of NO(A,C,D) are formed, indicating that no energy is deposited into the vibration of NO(A,C,D). The rotational distributions of NO(A:v’=0), NO(C:v’=0), and NO(D:v’=0) are expressed by single Boltzmann rotational temperature of 500±50, 300±50, and 400±50 K, respectively. The average fractions of the total available energy deposited into rotation of NO(A), NO(C), and NO(D) are evaluated to be only 1.5±0.1%, 1.4±0.2%, and 1.9±0.2%, respectively. Most of all excess energy is expected to be partitioned into tra...
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Formation of NO(A 2Σ+) by the Neutralization Reaction between NO+ and SF−6 at thermal energy
The Journal of Chemical Physics, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Masafumi Nakamura, Yukio Nishimura, Hiroshi ObaseAbstract:An optical spectroscopic study has been made of the ion–ion Neutralization Reaction between NO+(X 1Σ+:v‘=0) and SF−6 in the flowing afterglow. Only the NO(A 2Σ+–X 2Πr) emission from v’=0 was excited, indicating that no energy is deposited into the vibration of NO(A). The rotational distribution of NO(A:v’=0) was expressed by a single Boltzmann rotational temperature of 600±50 K. The average fraction of the total available energy deposited into rotation of NO(A) was evaluated to be only 1.9%. Most of all excess energy was expected to be partitioned into translation of the products due to a strong mutual Coulombic attractive force between NO+ and SF−6. The observed vibrational and rotational distributions were less excited than statistical prior ones, indicating that the Reaction dynamics is not governed by a simple statistical theory. The mechanism of the selective excitation of NO(A) in the ion–ion Neutralization Reaction was discussed.
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formation of no a 2σ by the Neutralization Reaction between no and sf 6 at thermal energy
Journal of Chemical Physics, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Masafumi Nakamura, Yukio Nishimura, Hiroshi ObaseAbstract:An optical spectroscopic study has been made of the ion–ion Neutralization Reaction between NO+(X 1Σ+:v‘=0) and SF−6 in the flowing afterglow. Only the NO(A 2Σ+–X 2Πr) emission from v’=0 was excited, indicating that no energy is deposited into the vibration of NO(A). The rotational distribution of NO(A:v’=0) was expressed by a single Boltzmann rotational temperature of 600±50 K. The average fraction of the total available energy deposited into rotation of NO(A) was evaluated to be only 1.9%. Most of all excess energy was expected to be partitioned into translation of the products due to a strong mutual Coulombic attractive force between NO+ and SF−6. The observed vibrational and rotational distributions were less excited than statistical prior ones, indicating that the Reaction dynamics is not governed by a simple statistical theory. The mechanism of the selective excitation of NO(A) in the ion–ion Neutralization Reaction was discussed.
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Electronic excitation of NO by the ion/ion Neutralization Reaction between NO+ and C6F5CF3− at thermal energy
International Journal of Mass Spectrometry and Ion Processes, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Yukio Nishimura, Hiroshi ObaseAbstract:Abstract The ion/ion Neutralization Reaction between NO+(X1Σ+: v″ = 0) and C6F5CF3− has been spectroscopically studied in the flowing helium afterglow. The NO(A2Σ+-X2IIr, C2IIr-X2IIr, D2Σ+-X2IIr) emission systems are observed in the NO+/C6F5CF3− Reaction, as in the NO+/C6F6− Reaction reported previously. The same electronic state selectivity between the NO+/C6F5CF3− and NO+/C6F6− Reactions suggests that the molecular symmetry of the negative ion is insignificant for the electronic state selectivity in the ion/ion Neutralization Reaction. The relative formation rates of NO(A), NO(C), and NO(D) in the NO+/C6F5CF3− Reaction are evaluated to be 1.0, 0.41 ± 0.003, 0.060 ± 0.010, respectively. Only the v′ = 0 levels of NO(A,C,D) are formed, indicating that no energy is deposited into the vibration of NO(A,C,D). The rotational distributions of NO(A: v′ = 0), NO(C: v′ = 0), and NO(D: v′ = 0) are expressed by single Boltzmann rotational temperatures of 500 ± 50 K, 300 ± 50 K and 400 ± 50 K, respectively. The average fractions of the total available energy deposited into rotation of NO(A), NO(C), and NO(D) are evaluated to be only 1.8 ± 0.2%, 1.4 ± 0.2%, and 2.5 ± 0.3%, respectively. The observed vibrational and rotational distributions are compared with statistical prior ones in order to obtain information on the dynamical feature of the Reaction.
Masaharu Tsuji - One of the best experts on this subject based on the ideXlab platform.
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The Influence of Vibrational Excitation of NO+(X1Σ+ : v″) on the Formation of NO* by the NO+ + C6F6− Neutralization Reaction at Thermal Energy
Bulletin of the Chemical Society of Japan, 1999Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Hidefumi Oota, Masahiro Hisano, Yukio NishimuraAbstract:The NO(A2Σ+-X2Πr, C2Πr-X2Πr, D2Σ+-X2Πr) emissions resulting from the mutual ion–ion Neutralization Reaction between NO+(X1Σ+) and C6F6− have been measured at various source gas pressures of NO+ in a flowing afterglow in order to examine the influence of vibrational excitation in NO+(X : v″). N2O was used as a source gas of NO+(X). The NO(A-X, C-X, D-X) emissions from only the v′ = 0 level were observed at high N2O pressures above ca. 60 mTorr (1 Torr = 133.322 Pa), where only NO+(X : v″ = 0) was present. On the other hand, the NO(A-X) emission from v′ = 1, 2 and the NO(D-X) emission from v′ = 1 appeared at low N2O pressures below ca. 60 mTorr, where NO+(X : v″ > 0) was present. It was found that vibrational excitation in NO+(X : v″) results in vibrational excitation of the product NO(A, D : v′ = v″) molecule because of favorable Franck–Condon factors for the NO+(X : v″) → NO(A, D : v′ = v″) Neutralization. The fact that the vibrational excitation of NO(D) is slightly higher than that of NO(A) indicated th...
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Formation of CO(d3Δi, a′3Σ+) by Dissociative Ion-Ion Neutralization Reaction of CO2+ with C6F6− in the Helium Flowing Afterglow
Chemistry Letters, 1998Co-Authors: Masaharu Tsuji, Masafumi Nakamura, Erika Oda, Yukio NishimuraAbstract:The ion-ion Neutralization Reaction of CO2+ with C6F6− has been spectroscopically studied in a He flowing afterglow. The CO(d3Δ1-a3Πr) transition from v′=0-3 and the CO(a′3Σ+-a3Πr) transition from v′=3-7 were observed with a CO(a′-a)/CO(d-a) ratio of 3.9. The vibrational distributions of CO(d,a′) indicated that 43 and 62 % of the total excess energies are deposited into vibrational modes of CO(d) and CO(a′), respectively.
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FORMATION OF THE HE2(C,D,E,F,C,D,E,F) STATES BY ION-ION Neutralization Reaction OF HE2+ WITH C6F6- IN THE HELIUM FLOWING AFTERGLOW
Chemistry Letters, 1997Co-Authors: Masaharu Tsuji, Masafumi Nakamura, Erika Oda, Makoto Tanaka, Yukio NishimuraAbstract:The ion-ion Neutralization Reaction of He2+ with C6F6− has been spectroscopically studied in a He flowing afterglow. The He2(C,D,E,F,c,d,e,f) states in the energy range of 19.22-20.62 eV were produced. There was a great similarity in the product electronic state distribution between the He2+/C6F6− and He+/C6F6− Reactions leading to He2* and He*, respectively.
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Formation of NO(A 2Σ+, C 2Πr, D 2Σ+) by the ion–ion Neutralization Reaction between NO+ and C6F6− at thermal energy
The Journal of Chemical Physics, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Yukio Nishimura, Hiroshi ObaseAbstract:The ion–ion Neutralization Reaction between NO+ (X 1Σ+:v‘=0) and C6F−6 has been spectroscopically studied in the flowing helium afterglow. In addition to the NO(A 2Σ+–X 2Πr) emission system, which has been found in the previous studies on the NO+/NO−2 and NO+/SF−6 Reactions, the NO(C 2Πr–X 2Πr, D 2Σ+–X 2Πr) emission systems are observed in the NO+/C6F−6 Reaction. The relative formation rates of NO(A), NO(C), and NO(D) are evaluated to be 1.0, 0.13±0.04, and 0.24±0.04, respectively. Only the v’=0 levels of NO(A,C,D) are formed, indicating that no energy is deposited into the vibration of NO(A,C,D). The rotational distributions of NO(A:v’=0), NO(C:v’=0), and NO(D:v’=0) are expressed by single Boltzmann rotational temperature of 500±50, 300±50, and 400±50 K, respectively. The average fractions of the total available energy deposited into rotation of NO(A), NO(C), and NO(D) are evaluated to be only 1.5±0.1%, 1.4±0.2%, and 1.9±0.2%, respectively. Most of all excess energy is expected to be partitioned into tra...
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formation of no a 2σ c 2πr d 2σ by the ion ion Neutralization Reaction between no and c6f6 at thermal energy
Journal of Chemical Physics, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Yukio Nishimura, Hiroshi ObaseAbstract:The ion–ion Neutralization Reaction between NO+ (X 1Σ+:v‘=0) and C6F−6 has been spectroscopically studied in the flowing helium afterglow. In addition to the NO(A 2Σ+–X 2Πr) emission system, which has been found in the previous studies on the NO+/NO−2 and NO+/SF−6 Reactions, the NO(C 2Πr–X 2Πr, D 2Σ+–X 2Πr) emission systems are observed in the NO+/C6F−6 Reaction. The relative formation rates of NO(A), NO(C), and NO(D) are evaluated to be 1.0, 0.13±0.04, and 0.24±0.04, respectively. Only the v’=0 levels of NO(A,C,D) are formed, indicating that no energy is deposited into the vibration of NO(A,C,D). The rotational distributions of NO(A:v’=0), NO(C:v’=0), and NO(D:v’=0) are expressed by single Boltzmann rotational temperature of 500±50, 300±50, and 400±50 K, respectively. The average fractions of the total available energy deposited into rotation of NO(A), NO(C), and NO(D) are evaluated to be only 1.5±0.1%, 1.4±0.2%, and 1.9±0.2%, respectively. Most of all excess energy is expected to be partitioned into tra...
Yukio Nishimura - One of the best experts on this subject based on the ideXlab platform.
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The Influence of Vibrational Excitation of NO+(X1Σ+ : v″) on the Formation of NO* by the NO+ + C6F6− Neutralization Reaction at Thermal Energy
Bulletin of the Chemical Society of Japan, 1999Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Hidefumi Oota, Masahiro Hisano, Yukio NishimuraAbstract:The NO(A2Σ+-X2Πr, C2Πr-X2Πr, D2Σ+-X2Πr) emissions resulting from the mutual ion–ion Neutralization Reaction between NO+(X1Σ+) and C6F6− have been measured at various source gas pressures of NO+ in a flowing afterglow in order to examine the influence of vibrational excitation in NO+(X : v″). N2O was used as a source gas of NO+(X). The NO(A-X, C-X, D-X) emissions from only the v′ = 0 level were observed at high N2O pressures above ca. 60 mTorr (1 Torr = 133.322 Pa), where only NO+(X : v″ = 0) was present. On the other hand, the NO(A-X) emission from v′ = 1, 2 and the NO(D-X) emission from v′ = 1 appeared at low N2O pressures below ca. 60 mTorr, where NO+(X : v″ > 0) was present. It was found that vibrational excitation in NO+(X : v″) results in vibrational excitation of the product NO(A, D : v′ = v″) molecule because of favorable Franck–Condon factors for the NO+(X : v″) → NO(A, D : v′ = v″) Neutralization. The fact that the vibrational excitation of NO(D) is slightly higher than that of NO(A) indicated th...
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Formation of CO(d3Δi, a′3Σ+) by Dissociative Ion-Ion Neutralization Reaction of CO2+ with C6F6− in the Helium Flowing Afterglow
Chemistry Letters, 1998Co-Authors: Masaharu Tsuji, Masafumi Nakamura, Erika Oda, Yukio NishimuraAbstract:The ion-ion Neutralization Reaction of CO2+ with C6F6− has been spectroscopically studied in a He flowing afterglow. The CO(d3Δ1-a3Πr) transition from v′=0-3 and the CO(a′3Σ+-a3Πr) transition from v′=3-7 were observed with a CO(a′-a)/CO(d-a) ratio of 3.9. The vibrational distributions of CO(d,a′) indicated that 43 and 62 % of the total excess energies are deposited into vibrational modes of CO(d) and CO(a′), respectively.
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FORMATION OF THE HE2(C,D,E,F,C,D,E,F) STATES BY ION-ION Neutralization Reaction OF HE2+ WITH C6F6- IN THE HELIUM FLOWING AFTERGLOW
Chemistry Letters, 1997Co-Authors: Masaharu Tsuji, Masafumi Nakamura, Erika Oda, Makoto Tanaka, Yukio NishimuraAbstract:The ion-ion Neutralization Reaction of He2+ with C6F6− has been spectroscopically studied in a He flowing afterglow. The He2(C,D,E,F,c,d,e,f) states in the energy range of 19.22-20.62 eV were produced. There was a great similarity in the product electronic state distribution between the He2+/C6F6− and He+/C6F6− Reactions leading to He2* and He*, respectively.
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Formation of NO(A 2Σ+, C 2Πr, D 2Σ+) by the ion–ion Neutralization Reaction between NO+ and C6F6− at thermal energy
The Journal of Chemical Physics, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Yukio Nishimura, Hiroshi ObaseAbstract:The ion–ion Neutralization Reaction between NO+ (X 1Σ+:v‘=0) and C6F−6 has been spectroscopically studied in the flowing helium afterglow. In addition to the NO(A 2Σ+–X 2Πr) emission system, which has been found in the previous studies on the NO+/NO−2 and NO+/SF−6 Reactions, the NO(C 2Πr–X 2Πr, D 2Σ+–X 2Πr) emission systems are observed in the NO+/C6F−6 Reaction. The relative formation rates of NO(A), NO(C), and NO(D) are evaluated to be 1.0, 0.13±0.04, and 0.24±0.04, respectively. Only the v’=0 levels of NO(A,C,D) are formed, indicating that no energy is deposited into the vibration of NO(A,C,D). The rotational distributions of NO(A:v’=0), NO(C:v’=0), and NO(D:v’=0) are expressed by single Boltzmann rotational temperature of 500±50, 300±50, and 400±50 K, respectively. The average fractions of the total available energy deposited into rotation of NO(A), NO(C), and NO(D) are evaluated to be only 1.5±0.1%, 1.4±0.2%, and 1.9±0.2%, respectively. Most of all excess energy is expected to be partitioned into tra...
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formation of no a 2σ c 2πr d 2σ by the ion ion Neutralization Reaction between no and c6f6 at thermal energy
Journal of Chemical Physics, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Yukio Nishimura, Hiroshi ObaseAbstract:The ion–ion Neutralization Reaction between NO+ (X 1Σ+:v‘=0) and C6F−6 has been spectroscopically studied in the flowing helium afterglow. In addition to the NO(A 2Σ+–X 2Πr) emission system, which has been found in the previous studies on the NO+/NO−2 and NO+/SF−6 Reactions, the NO(C 2Πr–X 2Πr, D 2Σ+–X 2Πr) emission systems are observed in the NO+/C6F−6 Reaction. The relative formation rates of NO(A), NO(C), and NO(D) are evaluated to be 1.0, 0.13±0.04, and 0.24±0.04, respectively. Only the v’=0 levels of NO(A,C,D) are formed, indicating that no energy is deposited into the vibration of NO(A,C,D). The rotational distributions of NO(A:v’=0), NO(C:v’=0), and NO(D:v’=0) are expressed by single Boltzmann rotational temperature of 500±50, 300±50, and 400±50 K, respectively. The average fractions of the total available energy deposited into rotation of NO(A), NO(C), and NO(D) are evaluated to be only 1.5±0.1%, 1.4±0.2%, and 1.9±0.2%, respectively. Most of all excess energy is expected to be partitioned into tra...
Zhuodi Cai - One of the best experts on this subject based on the ideXlab platform.
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improvement in mechanical properties of sbr fly ash composites by in situ grafting Neutralization Reaction
Chemical Engineering Journal, 2018Co-Authors: Shuyan Yang, Ping Liang, Xiaokang Peng, Yanxue Zhou, Kaihui Hua, Zhuodi CaiAbstract:Abstract A growing increase in fly ash (FA) becomes a serious problem for environmental protection. In order to alleviate this problem, many people have tried to use FA to prepare polymer composites. However, due to the lack of hydroxyl groups on the surface of FA, the conventional surface treatment method for FA, such as silane or titanate coupling agent modification, is unacceptable and application of FA in the polymer industry is still a huge challenge. In this work, in-situ grafting-Neutralization Reaction takes place within styrene butadiene rubber/FA/sorbic acid (SBR/FA/SA) composites during the vulcanization process. Experimental data show an immobilized rubber layer is established on the surface of FA, which originates from strong interactions among SBR, FA and SA. As a consequence, the tensile strength of SBR/FA/15SA composite is about 215% higher than that of SBR/FA composite, along with larger elongation at break and modulus, which suggests stronger reinforcing effect of FA/SA for SBR composites and opens a new road to use FA in the polymer industry.
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Improvement in mechanical properties of SBR/Fly ash composites by in-situ grafting-Neutralization Reaction
Chemical Engineering Journal, 2018Co-Authors: Shuyan Yang, Ping Liang, Xiaokang Peng, Yanxue Zhou, Kaihui Hua, Zhuodi CaiAbstract:Abstract A growing increase in fly ash (FA) becomes a serious problem for environmental protection. In order to alleviate this problem, many people have tried to use FA to prepare polymer composites. However, due to the lack of hydroxyl groups on the surface of FA, the conventional surface treatment method for FA, such as silane or titanate coupling agent modification, is unacceptable and application of FA in the polymer industry is still a huge challenge. In this work, in-situ grafting-Neutralization Reaction takes place within styrene butadiene rubber/FA/sorbic acid (SBR/FA/SA) composites during the vulcanization process. Experimental data show an immobilized rubber layer is established on the surface of FA, which originates from strong interactions among SBR, FA and SA. As a consequence, the tensile strength of SBR/FA/15SA composite is about 215% higher than that of SBR/FA composite, along with larger elongation at break and modulus, which suggests stronger reinforcing effect of FA/SA for SBR composites and opens a new road to use FA in the polymer industry.
Hiroaki Ishimi - One of the best experts on this subject based on the ideXlab platform.
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The Influence of Vibrational Excitation of NO+(X1Σ+ : v″) on the Formation of NO* by the NO+ + C6F6− Neutralization Reaction at Thermal Energy
Bulletin of the Chemical Society of Japan, 1999Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Hidefumi Oota, Masahiro Hisano, Yukio NishimuraAbstract:The NO(A2Σ+-X2Πr, C2Πr-X2Πr, D2Σ+-X2Πr) emissions resulting from the mutual ion–ion Neutralization Reaction between NO+(X1Σ+) and C6F6− have been measured at various source gas pressures of NO+ in a flowing afterglow in order to examine the influence of vibrational excitation in NO+(X : v″). N2O was used as a source gas of NO+(X). The NO(A-X, C-X, D-X) emissions from only the v′ = 0 level were observed at high N2O pressures above ca. 60 mTorr (1 Torr = 133.322 Pa), where only NO+(X : v″ = 0) was present. On the other hand, the NO(A-X) emission from v′ = 1, 2 and the NO(D-X) emission from v′ = 1 appeared at low N2O pressures below ca. 60 mTorr, where NO+(X : v″ > 0) was present. It was found that vibrational excitation in NO+(X : v″) results in vibrational excitation of the product NO(A, D : v′ = v″) molecule because of favorable Franck–Condon factors for the NO+(X : v″) → NO(A, D : v′ = v″) Neutralization. The fact that the vibrational excitation of NO(D) is slightly higher than that of NO(A) indicated th...
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Formation of NO(A 2Σ+, C 2Πr, D 2Σ+) by the ion–ion Neutralization Reaction between NO+ and C6F6− at thermal energy
The Journal of Chemical Physics, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Yukio Nishimura, Hiroshi ObaseAbstract:The ion–ion Neutralization Reaction between NO+ (X 1Σ+:v‘=0) and C6F−6 has been spectroscopically studied in the flowing helium afterglow. In addition to the NO(A 2Σ+–X 2Πr) emission system, which has been found in the previous studies on the NO+/NO−2 and NO+/SF−6 Reactions, the NO(C 2Πr–X 2Πr, D 2Σ+–X 2Πr) emission systems are observed in the NO+/C6F−6 Reaction. The relative formation rates of NO(A), NO(C), and NO(D) are evaluated to be 1.0, 0.13±0.04, and 0.24±0.04, respectively. Only the v’=0 levels of NO(A,C,D) are formed, indicating that no energy is deposited into the vibration of NO(A,C,D). The rotational distributions of NO(A:v’=0), NO(C:v’=0), and NO(D:v’=0) are expressed by single Boltzmann rotational temperature of 500±50, 300±50, and 400±50 K, respectively. The average fractions of the total available energy deposited into rotation of NO(A), NO(C), and NO(D) are evaluated to be only 1.5±0.1%, 1.4±0.2%, and 1.9±0.2%, respectively. Most of all excess energy is expected to be partitioned into tra...
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formation of no a 2σ c 2πr d 2σ by the ion ion Neutralization Reaction between no and c6f6 at thermal energy
Journal of Chemical Physics, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Yukio Nishimura, Hiroshi ObaseAbstract:The ion–ion Neutralization Reaction between NO+ (X 1Σ+:v‘=0) and C6F−6 has been spectroscopically studied in the flowing helium afterglow. In addition to the NO(A 2Σ+–X 2Πr) emission system, which has been found in the previous studies on the NO+/NO−2 and NO+/SF−6 Reactions, the NO(C 2Πr–X 2Πr, D 2Σ+–X 2Πr) emission systems are observed in the NO+/C6F−6 Reaction. The relative formation rates of NO(A), NO(C), and NO(D) are evaluated to be 1.0, 0.13±0.04, and 0.24±0.04, respectively. Only the v’=0 levels of NO(A,C,D) are formed, indicating that no energy is deposited into the vibration of NO(A,C,D). The rotational distributions of NO(A:v’=0), NO(C:v’=0), and NO(D:v’=0) are expressed by single Boltzmann rotational temperature of 500±50, 300±50, and 400±50 K, respectively. The average fractions of the total available energy deposited into rotation of NO(A), NO(C), and NO(D) are evaluated to be only 1.5±0.1%, 1.4±0.2%, and 1.9±0.2%, respectively. Most of all excess energy is expected to be partitioned into tra...
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Formation of NO(A 2Σ+) by the Neutralization Reaction between NO+ and SF−6 at thermal energy
The Journal of Chemical Physics, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Masafumi Nakamura, Yukio Nishimura, Hiroshi ObaseAbstract:An optical spectroscopic study has been made of the ion–ion Neutralization Reaction between NO+(X 1Σ+:v‘=0) and SF−6 in the flowing afterglow. Only the NO(A 2Σ+–X 2Πr) emission from v’=0 was excited, indicating that no energy is deposited into the vibration of NO(A). The rotational distribution of NO(A:v’=0) was expressed by a single Boltzmann rotational temperature of 600±50 K. The average fraction of the total available energy deposited into rotation of NO(A) was evaluated to be only 1.9%. Most of all excess energy was expected to be partitioned into translation of the products due to a strong mutual Coulombic attractive force between NO+ and SF−6. The observed vibrational and rotational distributions were less excited than statistical prior ones, indicating that the Reaction dynamics is not governed by a simple statistical theory. The mechanism of the selective excitation of NO(A) in the ion–ion Neutralization Reaction was discussed.
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formation of no a 2σ by the Neutralization Reaction between no and sf 6 at thermal energy
Journal of Chemical Physics, 1995Co-Authors: Masaharu Tsuji, Hiroaki Ishimi, Masafumi Nakamura, Yukio Nishimura, Hiroshi ObaseAbstract:An optical spectroscopic study has been made of the ion–ion Neutralization Reaction between NO+(X 1Σ+:v‘=0) and SF−6 in the flowing afterglow. Only the NO(A 2Σ+–X 2Πr) emission from v’=0 was excited, indicating that no energy is deposited into the vibration of NO(A). The rotational distribution of NO(A:v’=0) was expressed by a single Boltzmann rotational temperature of 600±50 K. The average fraction of the total available energy deposited into rotation of NO(A) was evaluated to be only 1.9%. Most of all excess energy was expected to be partitioned into translation of the products due to a strong mutual Coulombic attractive force between NO+ and SF−6. The observed vibrational and rotational distributions were less excited than statistical prior ones, indicating that the Reaction dynamics is not governed by a simple statistical theory. The mechanism of the selective excitation of NO(A) in the ion–ion Neutralization Reaction was discussed.