No abstract

Data on sputtering, ion reflection from surfaces, and trapping hare been collected, evaluated, and compiled into tables and complementary graphs for presentation as a revision ~ and addition to Sections D.l, D.5, and D.6 of Atomic Data £0*. Conthoiled ruUon Re&eaAcJi (OBML-5206,-5207), issued in 1977 as a compilation of atomic and molecular cross sections of interest to controlled thermonuclear research. Section D.l presents, in self-contained data sets, sputtering coefficients as functions of various incident and target materials, temperatures, angles of incidence, and incident energies. Other relevant sputtering data are also compiled. Section D.5 includes data on particle and energy reflection coefficients as functions of impacting and target materials and angles of emergence or incidence. The energy distributions of neutrals plus ions are also covered in Section D.5. Contained in Section D 6 are data on trapping coefficients, trapped fluence, reemission rates, and replacement cross sections and efficiencies. Data sets are composed of tabular data, computer-generated graphs, estimates of the accuracy or confidence level of the data, bibliographical references, and explanatory notes. Bibliographical sources include reports, conference proceedings, and open literature publications from i960 to the present. The explanatory notes present such information as experimental procedures and the preparation, composition, and form of materials used. A reviied table of contents is provided. otJT«Bi/Tifln OF rm WCUIMT »R wismia V Introduction This publication presents revisions and additions to selected sections of the "Surface Collisions" portion of AtOMCC Vata. {ofc Contxotled Fu&toti Kueatch, Mot. 11 (omir-5207), issued in 1977 in looseleaf notebook for* to accomodate these planned revisions. The present report is designee no replace the original Sections D.l, D.5, and D.6. An updated Tabi c of Contents is also provided, to be substituted for pages ii to r?-t the parent compilation. Although the tables and graphs presented herein are entirely self-contained, it is suggested that they be inserted appropriately into the original binder. To disassemble this report, simply remove the screv posts.

The lack of appropriate standards and the similarity of electron impact (EI) ionization mass spectra shown by isomeric alkyl benzenes, indans, and tetralins often makes the identification of specific isomers impossible. Chemical ionization-proton exchange (CIPE) mass spectrometry using methanol-d1 as the reagent gas aids in their identification by determining the number of unsubstituted aromatic positions. After ionization of the aromatic ring (that is, addition of D+), only the aromatic hydrogens undergo exchange for deuterium. The number of deuterium exchanges observed allows one to assign the degree of alkyl substitution on the aromatic ring. The CIPE spectra also provide information on the position of alkyl substitution. For example, ortho and para disubstituted alkylbenzenes show a base peak (100% relative intensity) at the mass representing the exchange of all the aromatic protons compared to an intensity of 30 to 40% for meta-disubstituted benzenes. Gas chromatographic/mass spectrometric analysis of the aromatic fraction of a coal-derived jet fuel using traditional EI ionization showed that this fraction (57% by weight) was composed primarily of alkyl substituted benzenes, indans, and tetralins, but few specific isomers could be identified. The CIPE analysis allowed additional classification of approximately 50 individual alkylbenzene, indan, and tetralin isomers based on the degree of aromatic substitution.

This annotated bibliography lists published work on electron transfer in heavy particle collisions for the period 1950 to 1975. Sources include scientific journals, abstract compilations, conference proceedings, books, and reports. The bibliography is arranged alphabetically by author. Each entry indicates whether the work was experimental or theoretical, what energy range was covered, and what reactants were investigated. Following the bibliographical listing are indexes of reactants and authors.

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