Anomalous Behavior of the Near-Threshold Photoionization Cross Section of the Neon Isoelectronic Sequence: A Combined Experimental and Theoretical Study
نویسندگان
چکیده
H. S. Chakraborty,1 A. Gray,2 J. T. Costello,2 P. C. Deshmukh,1 G. N. Haque,3 E. T. Kennedy,2,* S. T. Manson,4 and J-P. Mosnier2 1Department of Physics, Indian Institute of Technology, Madras 600036, India 2Centre for Laser Plasma Research, School of Physical Sciences, Dublin City University, Dublin 9, Ireland 3Department of Physics, Morehouse College, Atlanta, Georgia 30314 4Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303 (Received 24 May 1999)
منابع مشابه
Triple Photoionization of Lithium Up To 650 eV
The doubleand triple-photoionization process in which two (or three) electrons are simultaneously emitted from an atom is of fundamental importance for the understanding of electron correlation. The triple-to-single photoionization ratio is a convenient way to quantify this correlation and to investigate its photon energy dependence. Many experimental and theoretical investigations have dealt w...
متن کاملTriple Photoionization of Neon and Argon Near Threshold
By using a pulsed electric field, the ions created in the interaction region (between the pusher and extractor plates) are accelerated toward a Z-stack configuration of multi-channel plates. The pulsed field provides a time scale for the "start" and "stop" times of an ion. This setup is sensitive to the mass to charge ratio of the ions, as shown in typical spectra such as Figures (2) and (3). I...
متن کاملSymposium on Atomic & Molecular Physics DOUBLE PHOTOIONIZATION NEAR THRESHOLD
The threshold region of the double-photoionization cross section is of particular interest because both ejected electrons move slowly in the Coulomb field of the residual ion. Near threshold both electrons have time to interact with each other and with the residual ion. Also, different theoretical models compete to describe the double-photoionization cross section in the threshold region. We ha...
متن کاملShake-up processes following K-shell photoionization in the Boron isoelectronic sequence
The direct and conjugate shake-up cross sections for the 2p → 3p, 3s and 2s → 2p, 3s transitions are calculated for CII, NIII, OIV, FV and NeVI in a close-coupling approximation using the R-matrix method. We find that the total shake-up cross section relative to that for single photoionization decreases with increasing Z. The decrease is about a factor 10 when going from BI to NeVI. When the fu...
متن کاملTriple photoionization of Lithium near threshold
Solving the full classical four-body Coulomb problem numerically using a Wigner initial distribution we formulate a classical-quantum hybrid approach to study triple ionization by single photon absorption from the Li ground state in the threshold region. We confirm the Wannier threshold law σ ∝ Eα and we show that the α determined in the interval between 2−5 eV deviates from the analytical thre...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999