TY - JOUR
T1 - A simplified method for absolute MPI cross-section measurements. Application to three-photon non-resonant ionization of Xe at 266 nm
AU - Schechter, Israel
AU - Schröder, Hartmut
AU - Kompa, Karl L.
PY - 1992/6/19
Y1 - 1992/6/19
N2 - A simple method to measure absolute MPI cross sections based on a direct measurement of the ions, produced out of the focal region, is described. The method avoids the problem of the complicated effective-volume evaluation at the focus of a laser beam, difficulties in estimation of the absolute number of ions, as well as the problems arising due to measurements in the saturation regime. The method is best for high cross-section measurements; however, in order to demonstrate its feasibility, it has been applied to the study of non-resonant MPI of Xe. This three-photon ionization cross section, measured for the first time at the fourth harmonic of a mode-locked Nd:YAG laser (266 nm), is found to be (1.1 ± 0.6) × 10-82 cm6 s2.
AB - A simple method to measure absolute MPI cross sections based on a direct measurement of the ions, produced out of the focal region, is described. The method avoids the problem of the complicated effective-volume evaluation at the focus of a laser beam, difficulties in estimation of the absolute number of ions, as well as the problems arising due to measurements in the saturation regime. The method is best for high cross-section measurements; however, in order to demonstrate its feasibility, it has been applied to the study of non-resonant MPI of Xe. This three-photon ionization cross section, measured for the first time at the fourth harmonic of a mode-locked Nd:YAG laser (266 nm), is found to be (1.1 ± 0.6) × 10-82 cm6 s2.
UR - http://www.scopus.com/inward/record.url?scp=0348052808&partnerID=8YFLogxK
U2 - 10.1016/0009-2614(92)85754-X
DO - 10.1016/0009-2614(92)85754-X
M3 - 文章
AN - SCOPUS:0348052808
SN - 0009-2614
VL - 194
SP - 128
EP - 134
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-2
ER -