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An electron-impact spectroscopy investigation of CH_3 and some of its pyrolytic precursors

Walzl, K. N. and Koerting, C. F. and Xavier, I. M., Jr. and Kuppermann, A. (1987) An electron-impact spectroscopy investigation of CH_3 and some of its pyrolytic precursors. Journal of Chemical Physics, 86 (1). pp. 88-92. ISSN 0021-9606. doi:10.1063/1.452596.

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The electronic spectrum of the methyl radical CH_3 was investigated by the technique of variable‐angle electron energy‐loss spectroscopy. By means of pyrolytic decomposition three possible sources of this radical were tried (tetramethyl tin, ethyl nitrite, and di‐t‐butyl‐peroxide). The spectra of these precursors were obtained. Using di‐t‐butyl‐peroxide, relative differential cross sections for the lowest allowed A″_2 3s Rydberg transition in CH_3 (5.73 eV) were determined at incident energies of 50 and 25 eV. The behavior of the differential cross section for this band is analogous to that of a spin‐allowed transition in a closed shell system and, as expected, in the vicinity of this band no transition of a spin‐forbidden nature is detected.

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Additional Information:© 1986 American Institute of Physics. Received 14 August 1986; accepted 3 September 1986. This work was supported in part by the U.S. Department of Energy, Contract No. DE-AM03-76F00767, Project Agreement No. DE-AT03-76ER72004. One of the authors (IMX) acknowledges a graduate fellowship from CAPES and UFPE (Brazil).
Funding AgencyGrant Number
Universidade Federal de Pernambuco (UFPE) (Brazil)UNSPECIFIED
Department of Energy (DOE)DE-AM03-76F00767
Department of Energy (DOE)DE-AT03-76ER72004
Subject Keywords:eel spectroscopy, methyl radicals, electronic structure, electron−molecule collisions, energy losses, rydberg states, differential cross sections, energy−level transitions
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Other Numbering System NameOther Numbering System ID
Caltech Arthur Amos Noyes Laboratory of Chemical Physics7456
Issue or Number:1
Classification Code:PACS: 34.80.Gs; 33.20.Lg; 32.80.Rm; 33.80 Rv
Record Number:CaltechAUTHORS:20120621-123641475
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Official Citation:An electron-impact spectroscopy investigation of CH[sub 3] and some of its pyrolytic precursors K. N. Walzl, C. F. Koerting, I. M. Xavier, Jr., and A. Kuppermann, J. Chem. Phys. 86, 88 (1987), DOI:10.1063/1.452596
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:32010
Deposited On:22 Jun 2012 14:33
Last Modified:09 Nov 2021 20:03

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