TY - JOUR
T1 - Time-Resolved Photoelectron Imaging of Acetone with 9.3 eV Photoexcitation
AU - Uenishi, Ryuta
AU - Horio, Takuya
AU - Suzuki, Toshinori
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant No. 15H05753.
Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019
Y1 - 2019
N2 - Ultrafast electronic relaxation following 9.3 eV photoexcitation of gaseous acetone was investigated with time-resolved photoelectron imaging spectroscopy. An intense photoionization signal due to a transition from the 41A1(Ï,Ï) state to the D1(Ï-1) cationic state diminishes within 50 fs, owing to vibrational wave packet motion leaving our observation energy window. Additional photoionization signals were assigned to transitions from Rydberg states with principal quantum numbers of 3-8 to the D0(n-1) cationic state, created by strong vibronic couplings with the bright 41A1(Ï,Ï) state. The deactivation processes of the 41A1(Ï,Ï) and Rydberg states are discussed based on their decay profiles obtained from a time-energy map of photoelectron kinetic energy distributions.
AB - Ultrafast electronic relaxation following 9.3 eV photoexcitation of gaseous acetone was investigated with time-resolved photoelectron imaging spectroscopy. An intense photoionization signal due to a transition from the 41A1(Ï,Ï) state to the D1(Ï-1) cationic state diminishes within 50 fs, owing to vibrational wave packet motion leaving our observation energy window. Additional photoionization signals were assigned to transitions from Rydberg states with principal quantum numbers of 3-8 to the D0(n-1) cationic state, created by strong vibronic couplings with the bright 41A1(Ï,Ï) state. The deactivation processes of the 41A1(Ï,Ï) and Rydberg states are discussed based on their decay profiles obtained from a time-energy map of photoelectron kinetic energy distributions.
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U2 - 10.1021/acs.jpca.9b05179
DO - 10.1021/acs.jpca.9b05179
M3 - Article
C2 - 31314525
AN - SCOPUS:85070837510
SN - 1089-5639
SP - 6848
EP - 6853
JO - Journal of Physical Chemistry A
JF - Journal of Physical Chemistry A
ER -