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Yu S, Yuan D, Chen W, Xie T, Zhou J, Wang T, Chen Z, Yuan K, Yang X, Wang X. Vacuum ultraviolet photodissociation dynamics of N 2O via the C 1Π state: The N( 2D j=5/2, 3/2) + NO(X 2Π) product channels. J Chem Phys 2018; 149:104309. [PMID: 30219012 DOI: 10.1063/1.5042627] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We study the vacuum ultraviolet photodissociation dynamics of N2O via the C1Π state by using the time-sliced velocity map ion imaging technique. Images of N(2Dj=5/2, 3/2) products from the N atom elimination channels were acquired at a set of photolysis wavelengths from 142.55 to 148.19 nm. Vibrational states of the NO(X2Π) co-fragments were partially resolved in experimental images. From these images, the product total kinetic energy release distributions (TKERs), branching ratios of the vibrational states of NO(X2Π) co-fragments, and the vibrational state specific angular anisotropy parameters (β) have been determined. Notable features were found in the experimental results: the TKERs show that the NO(X2Π) co-fragments are highly vibrationally excited. For the highly vibrationally excited state of NO(X2Π), a bimodal rotational structure is found at all the studied photolysis wavelengths. Furthermore, the vibrational state specific β values of both spin-orbit channels (j = 3/2, 5/2) clearly show a monotonic decrease as the vibrational quantum number of NO(X2Π) increases. These observations suggest that multiple dissociation pathways play a role in the formation of the N(2Dj=5/2, 3/2) + NO(X2Π) products: one corresponds to a fast dissociation pathway through the linear state (the C1Π state) following the initial excitation to a slightly bent geometry in the vicinity of the linear C1Π configuration, leading to the low rotationally excited components with relatively large β values; the other corresponds to a relatively slow dissociation pathway through the bent C(31A') or C(31A″) state, leading to moderately rotationally excited NO(X2Π) products with smaller β values.
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Affiliation(s)
- Shengrui Yu
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou, Zhejiang 311231, People's Republic of China
| | - Daofu Yuan
- Center for Advanced Chemical Physics (iChEM, Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, School of Chemistry and Materials Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China
| | - Wentao Chen
- Center for Advanced Chemical Physics (iChEM, Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, School of Chemistry and Materials Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China
| | - Ting Xie
- Center for Advanced Chemical Physics (iChEM, Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, School of Chemistry and Materials Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China
| | - Jiami Zhou
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou, Zhejiang 311231, People's Republic of China
| | - Tao Wang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, People's Republic of China
| | - Zhichao Chen
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, People's Republic of China
| | - Kaijun Yuan
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, People's Republic of China
| | - Xueming Yang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou, Zhejiang 311231, People's Republic of China
| | - Xingan Wang
- Center for Advanced Chemical Physics (iChEM, Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, School of Chemistry and Materials Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China
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Yuan D, Yu S, Xie T, Chen W, Wang S, Tan Y, Wang T, Yuan K, Yang X, Wang X. Photodissociation Dynamics of Nitrous Oxide near 145 nm: The O( 1S 0) and O( 3P J=2,1,0) Product Channels. J Phys Chem A 2018; 122:2663-2669. [PMID: 29481080 DOI: 10.1021/acs.jpca.7b10756] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the study of photodissociation dynamics of nitrous oxide in the vacuum ultraviolet region, using the time-sliced velocity map ion imaging technique. Ion images of the O(1S0) and O(3P J=2,1,0) products were measured at nine photolysis wavelengths from 142.55 to 148.79 nm. The product channels O(1S0) + N2(X1Σg+) and O(3P J=2,1,0) + N2(A3Σu+) have been observed. For these dissociation channels, the total kinetic energy releases of the dissociated products were acquired. With vibrational structures of the N2 coproducts partially resolved in the experimental images, the branching ratios of different vibrational states of the N2 coproducts were determined, and the vibrational state specific anisotropy parameters (β values) were derived. Analysis shows that the O(1S0) + N2(X1Σg+) channel is primarily formed via nonadiabatic couplings between the C (1Π) state and the higher-lying D (1Σ+) state of the N2O. A moderate rotational excitation and high vibrational excitation of N2(X1Σg+) products have been observed through this pathway. On the other hand, for the O(3P J=2,1,0) + N2(A3Σu+) channels, where a slightly higher rotational excitation of N2 coproducts have been observed, the possible pathway would be via nonadiabatic couplings from the C (1Π) state to the lower-lying A(1Σ-)state.
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Affiliation(s)
- Daofu Yuan
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) , University of Science and Technology of China . Jinzhai Road 96 , Hefei , Anhui 230026 , P. R. China
| | - Shengrui Yu
- Hangzhou Institute of Advanced Studies , Zhejiang Normal University , Gengwen Road 1108 , Hangzhou , Zhejiang 311231 , P. R. China
| | - Ting Xie
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) , University of Science and Technology of China . Jinzhai Road 96 , Hefei , Anhui 230026 , P. R. China
| | - Wentao Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) , University of Science and Technology of China . Jinzhai Road 96 , Hefei , Anhui 230026 , P. R. China
| | - Siwen Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) , University of Science and Technology of China . Jinzhai Road 96 , Hefei , Anhui 230026 , P. R. China
| | - Yuxin Tan
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) , University of Science and Technology of China . Jinzhai Road 96 , Hefei , Anhui 230026 , P. R. China
| | - Tao Wang
- State Key Laboratory of Molecular Reaction Dynamics , Dalian Institute of Chemical Physics, Chinese Academy of Sciences . Zhongshan Road 457 , Dalian , Liaoning 116023 , P. R. China
| | - Kaijun Yuan
- State Key Laboratory of Molecular Reaction Dynamics , Dalian Institute of Chemical Physics, Chinese Academy of Sciences . Zhongshan Road 457 , Dalian , Liaoning 116023 , P. R. China
| | - Xueming Yang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) , University of Science and Technology of China . Jinzhai Road 96 , Hefei , Anhui 230026 , P. R. China.,State Key Laboratory of Molecular Reaction Dynamics , Dalian Institute of Chemical Physics, Chinese Academy of Sciences . Zhongshan Road 457 , Dalian , Liaoning 116023 , P. R. China
| | - Xingan Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) , University of Science and Technology of China . Jinzhai Road 96 , Hefei , Anhui 230026 , P. R. China
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Yuan D, Yu S, Cheng W, Xie T, Yang X, Wang X. VUV Photodissociation Dynamics of Nitrous Oxide: The N((2)DJ=3/2,5/2) and N((2)PJ=1/2,3/2) Product Channels. J Phys Chem A 2016; 120:4966-72. [PMID: 26859162 DOI: 10.1021/acs.jpca.5b12644] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report on an experimental study of the vacuum ultraviolet photodissociation dynamics of nitrous oxide as a function of photolysis wavelength. In this study, both the N((2)DJ) + NO(X(2)Π) and N((2)PJ) + NO(X(2)Π) product channels were investigated using the time-sliced velocity ion imaging technique. Images of the N((2)DJ=5/2,3/2) and N((2)PJ=3/2,1/2) products were measured at seven and ten, respectively, photolysis wavelengths between 124.44 and 133.20 nm. The vibrational states of the NO products were partially resolved in the acquired raw ion images. The total kinetic energy release and the branching ratios of different vibrational states of NO products were determined. The vibrational state distributions of NO were found to be inverted for the N((2)DJ=5/2,3/2) and N((2)PJ=3/2,1/2) product channels. This phenomenon indicates that the N-O bond is highly vibrational excited during the breaking of the N-N bond. Vibrational state resolved anisotropic parameters β in both the N((2)DJ) and the N((2)PJ) channels were acquired. The small β values (around 0.5) in the dissociation process suggest that transition states in a bent configuration play an important role in the formation of N + NO products.
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Affiliation(s)
| | - Shengrui Yu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, Liaoning Province. P.R. China
| | | | | | - Xueming Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, Liaoning Province. P.R. China
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Yu SR, Yuana DF, Chen WT, Xie T, Wang SW, Yang XM, Wang XA. High-Resolution Experimental Study on Photodissocaition of N2O. CHINESE J CHEM PHYS 2016. [DOI: 10.1063/1674-0068/29/cjcp1512256] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Yu S, Yuan D, Chen W, Yang X, Wang X. VUV Photodissociation Dynamics of Nitrous Oxide: The O(1SJ=0) and O(3PJ=2,1,0) Product Channels. J Phys Chem A 2015; 119:8090-6. [DOI: 10.1021/acs.jpca.5b04438] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shengrui Yu
- Center
for Advanced Chemical Physics and Department of Chemical Physics,
School of Chemistry and Materials Science, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, Anhui Province, P. R. China
| | - Daofu Yuan
- Center
for Advanced Chemical Physics and Department of Chemical Physics,
School of Chemistry and Materials Science, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, Anhui Province, P. R. China
| | - Wentao Chen
- Center
for Advanced Chemical Physics and Department of Chemical Physics,
School of Chemistry and Materials Science, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, Anhui Province, P. R. China
| | - Xueming Yang
- Center
for Advanced Chemical Physics and Department of Chemical Physics,
School of Chemistry and Materials Science, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, Anhui Province, P. R. China
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of
Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, Liaoning Province, P. R. China
| | - Xingan Wang
- Center
for Advanced Chemical Physics and Department of Chemical Physics,
School of Chemistry and Materials Science, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, Anhui Province, P. R. China
- iChEM
(Collaborative Innovation Center of Chemistry for Energy Materials), University of Science and Techonology of China, Jinzhai Road 96, Hefei 230026, Anhui Province, P. R. China
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Photodissociation of Diatomic Molecules to Open Shell Atoms. ADVANCES IN CHEMICAL PHYSICS 2007. [DOI: 10.1002/9780470142851.ch1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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Witinski MF, Ortiz-Suárez M, Davis HF. Photodissociation dynamics of N2O at 130 nm: The N2(AΣu+3,BΠg3)+O(PJ=2,1,03) channels. J Chem Phys 2005; 122:174303. [PMID: 15910028 DOI: 10.1063/1.1888578] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Oxygen Rydberg time-of-flight spectroscopy was used to study the vacuum ultraviolet photodissociation dynamics of N(2)O near 130 nm. The O((3)P(J)) products were tagged by excitation to high-n Rydberg levels and subsequently field ionized at a detector. In agreement with previous work, we find that O((3)P(J)) formation following excitation to the repulsive N(2)O D((1)Sigma(+)) state produces the first two electronically excited states of the N(2) counterfragment, N(2)(A (3)Sigma(u) (+)) and N(2)(B (3)Pi(g)). The O((3)P(J)) translational energy distribution reveals that the overall branching ratio between N(2)(A (3)Sigma(u) (+)) and N(2)(B (3)Pi(g)) formation is approximately 1.0:1.0 for J = 1 and 2, with slightly less N(2)(B (3)Pi(g)) produced in coincidence with O((3)P(0)). The angular distributions were found to be independent of J and highly anisotropic, with beta = 1.5+/-0.2.
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Affiliation(s)
- Mark F Witinski
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, USA
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Lambert HM, Davis EW, Tokel O, Dixit AA, Houston PL. Photodissociation channels for N2O near 130 nm studied by product imaging. J Chem Phys 2005; 122:174304. [PMID: 15910029 DOI: 10.1063/1.1888579] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The photodissociation of N(2)O at wavelengths near 130 nm has been investigated by velocity-mapped product imaging. In all, five dissociation channels have been detected, leading to the following products: O((1)S)+N(2)(X (1)Sigma), N((2)D)+NO(X (2)Pi), N((2)P)+NO(X (2)Pi), O((3)P) + N(2)(A (3)Sigma(+) (u)), and O((3)P) + N(2)(B (3)Pi(g)). The most significant channel is to the products O((1)S) + N(2)(X(1)Sigma), with strong vibrational excitation in the N(2). The O((3)P) + N(2)(A,B):N((2)D,(2)P) + NO branching ratio is measured to be 1.4 +/- 0.5, while the N(2)(A) + O((3)P(J)):N(2)(B) + O((3)P(J)) branching ratio is determined to be 0.84+/-0.09. The spin-orbit distributions for the O((3)P(J)), N((2)P(J)), and N((2)D(J)) products were also determined. The angular distributions of the products are in qualitative agreement with excitation to the N(2)O(D (1)Sigma(+)) state, with participation as well by the (3)Pi(v) state.
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Affiliation(s)
- H M Lambert
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853-1301, USA
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Hopkins J, Wheale SH, Badyal JPS. Synergistic Oxidation at the Plasma/Polymer Interface. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp953786+] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Huels MA, Parenteau L, Michaud M, Sanche L. Kinetic-energy distributions of O- produced by dissociative electron attachment to physisorbed O2. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 51:337-349. [PMID: 9911590 DOI: 10.1103/physreva.51.337] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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LeClair LR, McConkey JW. Selective detection of O(1S0) following electron impact dissociation of O2 and N2O using a XeO* conversion technique. J Chem Phys 1993. [DOI: 10.1063/1.466056] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shafer N, Tonokura K, Matsumi Y, Tasaki S, Kawasaki M. The Doppler spectra of O(1D) from the photodissociation of O2, NO2, and N2O. J Chem Phys 1991. [DOI: 10.1063/1.461567] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Matsumi Y, Kawasaki M. Fine structure branching ratios of the O(3Pj) atomic fragments from photodissociation of oxygen molecules at 157 and 193 nm. J Chem Phys 1990. [DOI: 10.1063/1.459029] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Germany GA, Anderson RJ, Salamo GJ. Electron impact excitation of the 3p(5P) state of atomic oxygen. J Chem Phys 1988. [DOI: 10.1063/1.455098] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Gerber G, Möller R. One- and two-photon dissociation of Na2: Angular, velocity, and internal-state distributions of atomic fragments studied by Doppler spectroscopy. PHYSICAL REVIEW LETTERS 1985; 55:814-817. [PMID: 10032454 DOI: 10.1103/physrevlett.55.814] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Murad E, Hildenbrand DL. Dissociation energies of GdO, HoO, ErO, TmO, and LuO; correlation of results for the lanthanide monoxide series. J Chem Phys 1980. [DOI: 10.1063/1.440627] [Citation(s) in RCA: 77] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hawkins WG, Houston PL. 193 nm photodissociation of H2S: The SH internal energy distribution. J Chem Phys 1980. [DOI: 10.1063/1.439873] [Citation(s) in RCA: 87] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Campbell JD, Yu MH, Mangir M, Wittig C. Optical time of flight spectroscopy: A method for the direct state selective measurement of photofragment recoil energies. J Chem Phys 1978. [DOI: 10.1063/1.437051] [Citation(s) in RCA: 43] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fairchild CE, Stone EJ, Lawrence GM. Photofragment spectroscopy of ozone in the uv region 270–310 nm and at 600 nm. J Chem Phys 1978. [DOI: 10.1063/1.437071] [Citation(s) in RCA: 112] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Schofield K. Rate constants for the gaseous interaction of O(21D2) and O(21S0 - a critical evaluation. ACTA ACUST UNITED AC 1978. [DOI: 10.1016/0047-2670(78)87006-3] [Citation(s) in RCA: 104] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lee LC, Slanger TG, Black G, Sharpless RL. Quantum yields for the production of O(1D) from photodissociation of O2 at 1160–1770 Å. J Chem Phys 1977. [DOI: 10.1063/1.434759] [Citation(s) in RCA: 84] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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