Core level energy splitting in the C 1s photoelectron spectrum of C2H2

被引:82
作者
Kempgens, B [1 ]
Koppel, H [1 ]
Kivimaki, A [1 ]
Neeb, M [1 ]
Cederbaum, LS [1 ]
Bradshaw, AM [1 ]
机构
[1] UNIV HEIDELBERG,INST CHEM PHYS,D-69120 HEIDELBERG,GERMANY
关键词
D O I
10.1103/PhysRevLett.79.3617
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The partially resolved vibrational fine structure on the C 1s photoelectron line of C2H2 clearly differs from that of other small hydrocarbon molecules such as CH4, C2H4, and C2H6 This is attributed to photoionization from the two 1 sigma(g) and 1 sigma(u) core orbitals of C2H2, which can be described as the symmetric and antisymmetric linear combinations of the C 1s orbitals. According to our analysis they are split by 105 +/- 10 meV, a result which is in good agreement with calculation. [S0031-9007(97)04424-4].
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页码:3617 / 3620
页数:4
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