TY - JOUR
T1 - Photoionization and electron-impact ionization of Ar5+
AU - Wang, Jing Cheng
AU - Lu, M.
AU - Esteves, D.
AU - Habibi, M.
AU - Alna'Washi, G.
AU - Phaneuf, R. A.
AU - Kilcoyne, A. L.D.
PY - 2007/6/27
Y1 - 2007/6/27
N2 - Absolute cross sections for photoionization and electron-impact ionization of Ar5+ have been measured using two different interacting-beams setups. The spectra consist of measurements of the yield of products due to single ionization as a function of electron or photon energy. In addition, absolute photoionization and electron-impact ionization cross sections were measured to normalize the measured Ar6+ product-ion yield spectra. In the energy range from 90 to 111 eV, both electron-impact ionization and photoionization of Ar5+ are dominated by indirect 3s subshell excitation-autoionization. In the energy range from 270 to 285 eV, resonances due to 2p-3d excitation-autoionization are prominent in the photoionization spectrum. In the range from 225 to 335 eV, an enhancement due to 2p-nl (n>2) excitations are evident in the electron-impact ionization cross section. The electron and photon impact data show some features due to excitation of the same intermediate autoionizing states.
AB - Absolute cross sections for photoionization and electron-impact ionization of Ar5+ have been measured using two different interacting-beams setups. The spectra consist of measurements of the yield of products due to single ionization as a function of electron or photon energy. In addition, absolute photoionization and electron-impact ionization cross sections were measured to normalize the measured Ar6+ product-ion yield spectra. In the energy range from 90 to 111 eV, both electron-impact ionization and photoionization of Ar5+ are dominated by indirect 3s subshell excitation-autoionization. In the energy range from 270 to 285 eV, resonances due to 2p-3d excitation-autoionization are prominent in the photoionization spectrum. In the range from 225 to 335 eV, an enhancement due to 2p-nl (n>2) excitations are evident in the electron-impact ionization cross section. The electron and photon impact data show some features due to excitation of the same intermediate autoionizing states.
UR - http://www.scopus.com/inward/record.url?scp=34547269808&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.75.062712
DO - 10.1103/PhysRevA.75.062712
M3 - Article
AN - SCOPUS:34547269808
SN - 1050-2947
VL - 75
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 6
M1 - 062712
ER -