Measurement of Anisotropy in the Lateral Momentum of a Vibrating Adsorbed Molecule: CO{bold /}Cu(110)

Journal Article · Mon Sep 01 00:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.1889· OSTI ID:542277

Ahner, J; Mocuta, D; Ramsier, R D; Yates, Jr, J T ^[1]

---

1. University of Pittsburgh, Departments of Chemistry and Physics, Surface Science Center, Pittsburgh, Pennsylvania 15260 (United States)

Anisotropies in the frustrated translational mode of CO chemisorbed on Cu(110) have been measured for the first time, with energies of 4.9meV in the {l_angle}1{bar 1}0{r_angle} directions and 3.1meV in the {l_angle}001{r_angle} directions. The measurements are made using a new time-of-flight ESDIAD (electron stimulated desorption ion angular distribution) method, permitting the resolution of bond directional effects and initial state lateral momentum effects in ESDIAD patterns. These measurements provide a more detailed understanding of the librational potential energy well shape than has been possible previously. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 542277
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
66 PHYSICS
ANISOTROPY
CARBON MONOXIDE
CHEMICAL BONDS
CHEMISORPTION
COPPER
DESORPTION
LONGITUDINAL MOMENTUM
TIME-OF-FLIGHT METHOD
VIBRATIONAL STATES