Results 221 to 230 of about 44,713 (249)
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The photodissociation dynamics of tetrachloroethylene
The Journal of Chemical Physics, 2011We present a direct current slice imaging study of tetrachloroethylene (C2Cl4) photodissociation, probing the resulting ground state Cl (2P3/2) and spin-orbit excited state Cl* (2P1/2) products. We report photofragment images, total translational energy distributions and the product branching ratio of Cl*/Cl following dissociation at 235 and 202 nm ...
Michael L. Hause +2 more
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The Photodissociation of Propynal [PDF]
Berichte der Bunsengesellschaft für physikalische Chemie, 1985 AbstractThe lowest reaction channel on the electronic ground state potential surface of propynal HC CCHO → HC CH + CO as well as its calculated energy barrier have been examined by UV photolysis and by IR multiphoton decomposition.
J. Robert Huber +3 more
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Chemical Physics, 1980
Abstract The absorption of photons by Li 2 from the X 1 Σ + g state to the A 1 Σ + u and B 1 Π u states is considered and the mechanisms that lead to dissociation are studied quantitatively. Calculations are reported on the direct predissociation of the b 3 Π u state. The significance of accidental predissociation of the A 1 Σ + u state
T. Uzer, A. Dalgarno
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Abstract The absorption of photons by Li 2 from the X 1 Σ + g state to the A 1 Σ + u and B 1 Π u states is considered and the mechanisms that lead to dissociation are studied quantitatively. Calculations are reported on the direct predissociation of the b 3 Π u state. The significance of accidental predissociation of the A 1 Σ + u state
T. Uzer, A. Dalgarno
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The Journal of Chemical Physics, 1982
Photodissociation of O3+ is reported. (AIP)
J.D. Morrison, Simon Goss
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Photodissociation of O3+ is reported. (AIP)
J.D. Morrison, Simon Goss
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Photodissociation of tetramethyldioxetane
The Journal of Physical Chemistry, 1978Abstract : Tetramethyldioxetane was excited with a single 10 psec pulse at 264 nm. The resulting acetone fluorescence was observed and the rise time was found to be less than 10 psec. A mechanism accounting for this and previous experimental evidence is proposed. (Author)
Kenneth J. Kaufmann +3 more
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Photodissociation of Triatomic Hydrogen
Physical Review Letters, 1988The unstable ground-state potential surface of triatomic hydrogen has served as prototype for the development of bimolecular reaction-rate theory, and is still largely territory only of theoretical chemistry. While the ground electronic state of H/sub 3/ is dissociative, electronically excited states of this molecule are tightly bound. These states are
Hanspeter Helm, Philip C. Cosby
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Physical Review A, 2002
We have calculated the photodissociation cross section of NaH through the B 1 ∏ state. We have solved the time-dependent Schrodinger equation by using the Chebyshev-polynomial scheme and Fourier grid Hamiltonian method. We have used four different sets of potential-energy curves for X 1 Σ + and B 1 ∏ states [E. S. Sachs, J. Hinze, and N. H. Sabelli,
Anindita Bhattacharjee +1 more
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We have calculated the photodissociation cross section of NaH through the B 1 ∏ state. We have solved the time-dependent Schrodinger equation by using the Chebyshev-polynomial scheme and Fourier grid Hamiltonian method. We have used four different sets of potential-energy curves for X 1 Σ + and B 1 ∏ states [E. S. Sachs, J. Hinze, and N. H. Sabelli,
Anindita Bhattacharjee +1 more
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Photodissociation of dimethylnitrosamine
Chemical Physics Letters, 1981Abstract Photodissociation of (CH 3 ) 2 N-NO following S 1 (nπ * ) ← S 0 excitation yields (CH 3 ) 2 N − and NO with a quantum yield of 1.03 ± 0.10. These fragments recombine leaving no stable photopioducts. A fraction of NO produced by photolysis is vibrationally excited.
U. Brühlmann +3 more
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The photodissociation of SO2+·
International Journal of Mass Spectrometry and Ion Processes, 1985Abstract The first ion photodissociation study of SO2+· is reported. Unlike CH3I+· which photodissociates from the molecular ion ground state, SO2+· is observed to photopredissociate from the A and B states via the C and D states. The C ← B contribution to the low energy region is assigned and vibrational frequencies of 100, 46.5 and 55.5 meV are ...
J.D. Morrison +2 more
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Applied Physics Letters, 1980
Transition moments and energies have been calculated for the X-A, bound to continuum, transition in HgCl. The photodissociation cross section at the peak (∼20 000 cm−1 or 500 nm) is 1.2×10−18 cm2 at 600 K. The laser energy 17 921 cm−1 or 558 nm) for the B-X transition is close to the peak energy, and a significant absorption will result from a buildup ...
W. J. Stevens +4 more
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Transition moments and energies have been calculated for the X-A, bound to continuum, transition in HgCl. The photodissociation cross section at the peak (∼20 000 cm−1 or 500 nm) is 1.2×10−18 cm2 at 600 K. The laser energy 17 921 cm−1 or 558 nm) for the B-X transition is close to the peak energy, and a significant absorption will result from a buildup ...
W. J. Stevens +4 more
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