TY - JOUR
T1 - Symmetry- and vibrationally-resolved C K-shell photoionization studies of C2H2
AU - Hoshino, M.
AU - Nakagawa, K.
AU - Makochekanwa, C.
AU - Tanaka, T.
AU - Kuze, N.
AU - Matsumoto, M.
AU - Fujiwara, K.
AU - De Fanis, A.
AU - Tamenori, Y.
AU - Kitajima, M.
AU - Tanaka, H.
AU - Ueda, K.
N1 - Funding Information:
The experiment was carried out with the approval of the SPring-8 program review committee. This study was supported by Grants-in-Aid for Scientific Research from the Japanese Society for the Promotion of Science (JSPS). CM is also personally grateful to the JSPS for financial support under Grant number P04064.
PY - 2006/4/3
Y1 - 2006/4/3
N2 - The C K-shell photoelectron mainline of C2H2 molecules have been measured at photon energies 295-350 eV. The gerade and ungerade symmetries of the core-ionized states, 1σg and 1σu, are resolved. Resonance enhancement is found only in the 1σg photoionization cross-section and assigned to the σu shape resonance. The photoelectron asymmetry parameter takes a minimum value at the shape resonance energy. The shape resonance energy decreases with increase in the vibrational quantum number. No correlational shape resonance appears in the 1σu photoionization channel, suggesting that the channel coupling is negligible.
AB - The C K-shell photoelectron mainline of C2H2 molecules have been measured at photon energies 295-350 eV. The gerade and ungerade symmetries of the core-ionized states, 1σg and 1σu, are resolved. Resonance enhancement is found only in the 1σg photoionization cross-section and assigned to the σu shape resonance. The photoelectron asymmetry parameter takes a minimum value at the shape resonance energy. The shape resonance energy decreases with increase in the vibrational quantum number. No correlational shape resonance appears in the 1σu photoionization channel, suggesting that the channel coupling is negligible.
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U2 - 10.1016/j.cplett.2006.01.070
DO - 10.1016/j.cplett.2006.01.070
M3 - Article
AN - SCOPUS:33645006376
VL - 421
SP - 256
EP - 260
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 1-3
ER -