Rotationally resolved photoionization dynamics of hot CO fragmented from OCS
نویسندگان
چکیده
Articles you may be interested in Study of ultrafast dynamics of 2-picoline by time-resolved photoelectron imaging Coherent polyatomic dynamics studied by femtosecond time-resolved photoelectron spectroscopy: Dissociation of vibrationally excited C S 2 in the 6 s and 4 d Rydberg states Rovibrational photoionization dynamics of methyl and its isotopomers studied by high-resolution photoionization and photoelectron spectroscopy The photoionization dynamics of rotationally hot CO, photodissociated from OCS, have been studied using laser photoelectron spectroscopy via the intermediate B 1 ⌺ ϩ Rydberg state leading to the X 2 ⌺ ϩ of the ion. The photodissociation of OCS near 230 nm produces rotationally hot, but vibrationally cold CO (X 1 ⌺ ϩ ,NЉ,vЉϭ0,1) fragments along with S (1 D) atoms. These high rotational levels show photoelectron spectra with a very strong ⌬Nϭ0 transition and weaker ⌬N ϭϮ1, Ϯ2, and Ϯ3 transitions. Agreement between measured and calculated spectra is good and suggests that there is significant angular momentum coupling in the photoelectron orbital. In the ionization step not only ⌬vϭ0, but also off-diagonal, non-Franck–Condon (⌬v0) transitions are observed. The intensities of these transitions vary strongly within the region studied and can be explained by the excitation of superexcited Rydberg states with an A 2 ⌸ core.
منابع مشابه
Reaction dynamics of O((1)D,(3)P) + OCS studied with time-resolved Fourier transform infrared spectroscopy and quantum chemical calculations.
Time-resolved infrared emission of CO(2) and OCS was observed in reactions O((3)P) + OCS and O((1)D) + OCS with a step-scan Fourier transform spectrometer. The CO(2) emission involves Deltanu(3) = -1 transitions from highly vibrationally excited states, whereas emission of OCS is mainly from the transition (0, 0 degrees , 1) --> (0, 0 degrees , 0); the latter derives its energy via near-resonan...
متن کاملHigh-resolution photoelectron spectroscopy of molecules.
Rotationally resolved photoelectron spectra can provide significant insight into the underlying dynamics of molecular photoionization. Here, we discuss and compare results of recent theoretical studies of rotationally resolved photoelectron spectra with measurements for molecules such as HBr, OH, NO, N2, CO, H20, H2CO, and CH3. These studies reveal the rich dynamics of quantum-state-specific st...
متن کاملRotationally resolved photoelectron spectroscopy of hot N 2 formed in
Articles you may be interested in Communication: Ultrafast time-resolved ion photofragmentation spectroscopy of photoionization-induced proton transfer in phenol-ammonia complex Detection of " ended " NO recoil in the 355 nm NO 2 photodissociation mechanism The photoionization dynamics of rotationally hot molecular nitrogen are studied employing resonance enhanced multiphoton ionization in comb...
متن کاملRotationally resolved single-photon ionization of HCI and DCI
The rotationally resolved photoionization yields of jet-cooled HCl and DC1 have been measured in the energy range between their spin-orbit split 211 ionic thresholds. For single-photon excitation, narrow-band vuv radiation is generated by resonant frequency mixing. The spectra are complex due to an interaction of autoionizing resonances belonging to series converging to different rotational sta...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2015