TY - JOUR
T1 - Search for resonances in the scattering of low-energy positrons from atoms and molecules
AU - Sullivan, James P
AU - Gilbert, Stephen J
AU - Buckman, Stephen
AU - Surko, Clifford M
PY - 2001
Y1 - 2001
N2 - In a search for quasi-bound states, or resonances, high-resolution measurements (ΔE~25 meV) of the total positron scattering cross sections have been carried out in the energy region of the first electronically excited states of H2, N2, CO and Ar. In the case of H2, a recent calculation by Varella et al predicts such a resonance in the total elastic cross section near the excitation threshold for the B 1Σu+ state. We find no experimental evidence for the existence of this resonance and also find similar negative results for the other atomic and molecular targets.
AB - In a search for quasi-bound states, or resonances, high-resolution measurements (ΔE~25 meV) of the total positron scattering cross sections have been carried out in the energy region of the first electronically excited states of H2, N2, CO and Ar. In the case of H2, a recent calculation by Varella et al predicts such a resonance in the total elastic cross section near the excitation threshold for the B 1Σu+ state. We find no experimental evidence for the existence of this resonance and also find similar negative results for the other atomic and molecular targets.
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-0035859761&origin=inward
U2 - 10.1088/0953-4075/34/15/102
DO - 10.1088/0953-4075/34/15/102
M3 - Article
VL - 34
SP - 467
EP - 474
JO - Journal of Physics B: Atomic, Molecular and Optical Physics
JF - Journal of Physics B: Atomic, Molecular and Optical Physics
ER -