TY - JOUR
T1 - Is CO carbon KVV auger electron emission affected by the photoelectron?
AU - Prümper, G.
AU - Fukuzawa, Hironobu
AU - Rolles, D.
AU - Sakai, K.
AU - Prince, K. C.
AU - Harries, J. R.
AU - Tamenori, Y.
AU - Berrah, N.
AU - Ueda, Kiyoshi
PY - 2008/12/5
Y1 - 2008/12/5
N2 - Angular distributions (ADs) of O+ fragments from C 1s photoexcited CO detected in coincidence with carbon KVV Auger electrons emitted in the horizontal direction were measured at photon energies of 298, 305, 320, and 450 eV. At 450 eV, the ADs are polarization-independent and coincide with the molecular-frame Auger electron angular distribution. All measured ADs can be rationalized as a product of the same molecular-frame Auger electron angular distribution and the axial selectivity in the photoionization process. Thus the interaction between the photoelectron and the Auger electron for the normal Auger decay of CO can be neglected, and the two-step model is a good approximation.
AB - Angular distributions (ADs) of O+ fragments from C 1s photoexcited CO detected in coincidence with carbon KVV Auger electrons emitted in the horizontal direction were measured at photon energies of 298, 305, 320, and 450 eV. At 450 eV, the ADs are polarization-independent and coincide with the molecular-frame Auger electron angular distribution. All measured ADs can be rationalized as a product of the same molecular-frame Auger electron angular distribution and the axial selectivity in the photoionization process. Thus the interaction between the photoelectron and the Auger electron for the normal Auger decay of CO can be neglected, and the two-step model is a good approximation.
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U2 - 10.1103/PhysRevLett.101.233202
DO - 10.1103/PhysRevLett.101.233202
M3 - Article
C2 - 19113548
AN - SCOPUS:57349191506
VL - 101
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 23
M1 - 233202
ER -