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Low-energy electron-impact excitation of the ^(3,1)A_2(n→π*) states of formaldehyde

Sun, Qiyan and Winstead, Carl and McKoy, Vincent and Germano, José S. E. and Lima, Marco A. P. (1992) Low-energy electron-impact excitation of the ^(3,1)A_2(n→π*) states of formaldehyde. Physical Review A, 46 (5). pp. 2462-2467. ISSN 0556-2791. doi:10.1103/PhysRevA.46.2462.

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A three-state calculation of electron-impact excitation of formaldehyde to the ã^3A_2 and Ã^1A_2 states is carried out using the Schwinger multichannel variational method. The integral and differential cross sections so obtained agree fairly well with theoretical results obtained using the complex Kohn method. Though agreement between the calculated integral cross section and the single available experimental measurement is qualitative, similar conclusions regarding the excitation mechanism are reached. A generalization of the selection rule for (Σ^+⇆Σ^−) electron-impact excitation of diatomic molecules is used to explain the shape of the differential cross sections for the ã^3A_2 and Ã^1A_2 excitations.

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Alternate Title:Low-energy electron-impact excitation of the 3,1A2(n→π*) states of formaldehyde
Additional Information:© 1992 American Physical Society. (Received 5 March 1992) This work made use of computer resources provided by the Concurrent Supercomputing Consortium, the Caltech Concurrent Supercomputing Facilities, and the JPL-Caltech Supercomputing Project. Financial support was provided by the National Science Foundation under Grant Nos. PHY-9021933, INT-8714948, and INT-9106425.
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Issue or Number:5
Classification Code:PACS number(s): 34.80.Gs
Record Number:CaltechAUTHORS:20151028-114738451
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61669
Deposited By: George Porter
Deposited On:28 Oct 2015 22:56
Last Modified:10 Nov 2021 22:52

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