title: Verification of NEXAFS assignments by a comparison of fragmentation between gaseous and condensed methyl formate.
abstract: According to the ion desorption from condensed methyl formate (DCOOCH3) by C 1s electron excitation, C+ yield was strongly enhanced at 289.1 eV, a higher energy side of C1s(DC) --> pi*(C=O) peak. This feature could not be clearly assigned. In this work, to clarify the feature, fragment-ion yield curves of gas-phase methyl formate were measured and compared with those of condensed one, since gas-phase and condensed systems are presumed to show more or less similar fragment-ion yield curves under similar excitations. The results demonstrate that fragment-ion yield curves are useful for the assignments of NEXAFS features in both gaseous and condensed polyatomic molecules.
authors.affiliation: Quantum Radiation Division, Electrotechnical Laboratory, Tsukuba, Ibaraki, Japan. hiromi@etl.go.jp
authors.forename: H
authors.initials: H
authors.lastname: Ikeura-Sekiguchi
authors.forename: T
authors.initials: T
authors.lastname: Sekiguchi
authors.forename: N
authors.initials: N
authors.lastname: Saito
authors.forename: I H
authors.initials: IH
authors.lastname: Suzuki