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Title: Analysis of THz generation through the asymmetry of photoelectron angular distributions

Authors:
; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1347261
Grant/Contract Number:
FG02-86ER13491
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 95; Journal Issue: 3; Related Information: CHORUS Timestamp: 2017-03-17 22:58:21; Journal ID: ISSN 2469-9926
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Zhou, Zhaoyan, Wang, Xu, and Lin, C. D. Analysis of THz generation through the asymmetry of photoelectron angular distributions. United States: N. p., 2017. Web. doi:10.1103/PhysRevA.95.033418.
Zhou, Zhaoyan, Wang, Xu, & Lin, C. D. Analysis of THz generation through the asymmetry of photoelectron angular distributions. United States. doi:10.1103/PhysRevA.95.033418.
Zhou, Zhaoyan, Wang, Xu, and Lin, C. D. Fri . "Analysis of THz generation through the asymmetry of photoelectron angular distributions". United States. doi:10.1103/PhysRevA.95.033418.
@article{osti_1347261,
title = {Analysis of THz generation through the asymmetry of photoelectron angular distributions},
author = {Zhou, Zhaoyan and Wang, Xu and Lin, C. D.},
abstractNote = {},
doi = {10.1103/PhysRevA.95.033418},
journal = {Physical Review A},
number = 3,
volume = 95,
place = {United States},
year = {Fri Mar 17 00:00:00 EDT 2017},
month = {Fri Mar 17 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevA.95.033418

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  • Vibrationally and angularly resolved photoelectron spectra have been recorded in the wavelength range 650-730 Å for N 2, in the region of the autoionizing resonances leading to the B 2σ u + state of the N 2 + ion. The influence of these resonances on both the partial cross sections to the A 2π ustate and the X 2Sigma g + (the branching ratios) and the angular distribution of the photoemitted electrons is clearly demonstrated.
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  • Multiply charged anions possess strong intramolecular Coulomb repulsion (ICR), which has been shown to dictate photoelectron angular distributions PADs using photoelectron imaging. Here we report the effects of photoelectron kinetic energies on the PADs of multiply charged anions. Photoelectron images on a series of dicarboxylate dianions, -O 2C(CH 2) nCO 2 -(D n 2-, n = 3–11) have been measured at two photon energies, 532 and 266 nm. The first photoemission band of D n 2-, which is a perpendicular transition in the absence of the ICR, comes from electron detachment of an O lone pair orbital on the –COmore » 2 - end groups. Recent photoelectron imaging studies at 355 nm show that the PADs of D n 2- peak in the directions parallel to the laser polarization for small n due to the ICR, which directs the outgoing electrons along the molecular axis. The current data show much stronger parallel peaking at 532 nm, but much weaker parallel peaking in the 266 nm data, relative to the 355 nm data. These observations indicate that the ICR has greater influence on the trajectories of slow photoelectrons and much reduced effects on faster photoelectrons. This study demonstrates that the PADs of multiply charged anions depend on the interplay between ICR and the outgoing photoelectron kinetic energies.« less
  • Angular distributions of C(1s) photoelectrons emitted from oriented CO molecules were measured using a new method: mass and angle-resolved photoelectron-photoion coincidence spectroscopy. Along with the angular momentum composition of the photoelectron wave, the experiment reveals pronounced forward-backward asymmetries in the photoemission intensity with respect to the molecular orientation. This asymmetry, being observed for the first time in molecular photoionization, is interpreted in terms of multiple scattering effects. Calculations using the MS-X{alpha} method show good quantitative agreement with the presented experimental results. {copyright} {ital 1997} {ital The American Physical Society}