Absolute cross sections for photoionization of Xeq + ions (1 ⩽ q ⩽ 5) at the 3d ionization threshold

The photon-ion merged-beams technique has been employed at the new Photon-Ion spectrometer at PETRA III for measuring multiple photoionization of Xeq + (q = 1–5) ions. Total ionization cross sections have been obtained on an absolute scale for the dominant ionization reactions of the type hν + Xeq + → Xer + + (q − r)e− with product charge states q + 2 ⩽ r ⩽ q + 5. Prominent ionization features are observed in the photon-energy range 650–750 eV, which are associated with excitation or ionization of an inner-shell 3d electron. Single-configuration Dirac–Fock calculations agree quantitatively with the experimental cross sections for non-resonant photoabsorption, but fail to reproduce all details of the measured ionization resonance structures.

[1]  V. D. Mur,et al.  Current progress in developing the nonlinear ionization theory of atoms and ions , 2015 .

[2]  I. P. Grant,et al.  New version: Grasp2K relativistic atomic structure package , 2013, Comput. Phys. Commun..

[3]  Frank Siewert,et al.  The Variable Polarization XUV Beamline P04 at PETRA III: Optics, mechanics and their performance , 2013 .

[4]  Stephan Fritzsche,et al.  The Ratip program for relativistic calculations of atomic transition, ionization and recombination properties , 2012, Comput. Phys. Commun..

[5]  C. Blancard,et al.  K-Shell Photoionization of Singly Ionized Atomic Nitrogen , 2012, 1203.4256.

[6]  E. Shigemasa,et al.  Decay pathways after Xe 3d inner shell ionization using a multi-electron coincidence technique , 2011 .

[7]  A. Kilcoyne,et al.  Photoionization cross sections for ions of the cerium isonuclear sequence , 2009 .

[8]  Karen Willcox,et al.  Kinetics and kinematics for translational motions in microgravity during parabolic flight. , 2009, Aviation, space, and environmental medicine.

[9]  S. Brühl,et al.  Xenon 5p–4d cascade emission upon 3d-photoionization , 2009 .

[10]  Jérusalem,et al.  Photoionization of Xe3delectrons in moleculeXe@C60: Interplay of intradoublet and confinement resonances , 2006, physics/0609121.

[11]  H. Kjeldsen.  Photoionization cross sections of atomic ions from merged-beam experiments , 2006 .

[12]  C. Blancard,et al.  Absolute photoionization cross sections along the Xe isonuclear sequence: Xe{sup 3+} to Xe{sup 6+} , 2006 .

[13]  M. Lysaght,et al.  4d photoabsorption spectra of Sn II and Sn IV in the 30–65 eV region , 2005 .

[14]  D. Rolles,et al.  Auger cascades versus direct double Auger: relaxation processes following photoionization of the Kr 3d and Xe 4d, 3d inner shells , 2005 .

[15]  E. Kukk,et al.  Multiple ionization of Xe—comparison of de-excitation pathways following 3d5/2 ionization and 3d5/2→ 6p resonance excitation , 2005 .

[16]  Uwe Stamm,et al.  Extreme ultraviolet light sources for use in semiconductor lithography—state of the art and future development , 2004 .

[17]  A. Yagishita,et al.  Multiple photoionization following 3d5/2-shell threshold ionization of Xe , 2004 .

[18]  I. Petrov,et al.  Calculation of Xei+ photoion yields in coincidence with energy-selected M45NN Auger electrons , 2004 .

[19]  M. Huttula,et al.  Auger cascade satellites following 3d ionization in xenon , 2003 .

[20]  Joachim Ullrich,et al.  Recoil-ion and electron momentum spectroscopy: reaction-microscopes , 2003 .

[21]  M. Stener,et al.  3d photoionization along the xenon isoelectronic sequence , 2003 .

[22]  M. Amusia,et al.  Near-threshold photoionization of the Xe 3d spin-orbit doublet: Relativistic, relaxation, and intershell interaction effects , 2003 .

[23]  R. A. Phaneuf,et al.  Photoionization of Ne+ using synchrotron radiation , 2002 .

[24]  F. Folkmann,et al.  Experimental study of 4f wavefunction contraction: 4d-photoionization of low-charged ions of I, Xe, Cs and Ba , 2002 .

[25]  Y. Tamenori,et al.  A study on multi-charged Xe ions formed through 3d hole states using a coincidence technique , 2002 .

[26]  J. West.  Photoionization of atomic ions , 2001 .

[27]  K. Prince,et al.  Angular distribution in resonant Auger spectra of xenon excited below the 3 d 5 / 2 ionization threshold , 2001 .

[28]  J. Tulkki,et al.  Near-threshold study of Xe 3d photoionization. , 2000 .

[29]  A. Yagishita,et al.  3D PHOTOIONIZATION OF XE, CS AND BA AND THE COLLAPSE OF THE 4F WAVEFUNCTION , 1999 .

[30]  K. Prince,et al.  Measurement and ab initio calculation of the Ne photoabsorption spectrum in the region of the K edge , 1999 .

[31]  K. Prince,et al.  Angular distribution in xenon M 4 , 5 N 4 , 5 N 4 , 5 Auger decay , 1999 .

[32]  Karen J. Olsen,et al.  NIST Atomic Spectra Database (version 2.0) , 1999 .

[33]  M. Kimura,et al.  Photoionization of Ba+ ions due to creation of 4d hole states , 1995 .

[34]  L. Journel,et al.  Present status of inner-shell photoionization studies in singly- and multiply-charged atomic ions , 1994 .

[35]  J. Kaastra,et al.  Multiple Auger ionisation and fluorescence processes for Be to Zn. , 1993 .

[36]  N. Saito,et al.  Yields of multicharged Xe ions in the M-shell transition region , 1992 .

[37]  Pratt,et al.  Delayed maxima in photoionization cross sections of atomic ions. , 1990, Physical review. A, Atomic, molecular, and optical physics.

[38]  Kelly,et al.  Extended photoionization calculations for xenon. , 1989, Physical review. A, General physics.

[39]  Becker,et al.  Subshell photoionization of Xe between 40 and 1000 eV. , 1989, Physical review. A, General physics.

[40]  B. Langer,et al.  PHOTOIONIZATION QF XENON WITH SOFT X-RAYS , 1987 .

[41]  Charlotte Froese Fischer,et al.  General Hartree-Fock program , 1987 .

[42]  J. West,et al.  Measurements of absolute cross sections for the photoionisation of Ba+ ions , 1986 .

[43]  M. Amusia,et al.  The effect of atomic rearrangement on the photoionisation cross section for 3d subshells of the isoelectronic Xe series , 1985 .

[44]  A. Zangwill,et al.  On the interplay between dielectric screening and core hole relaxation in soft X-ray absorption , 1984 .

[45]  Y. Satow,et al.  Collapse of the f-symmetric final-state wavefunction in the 3d excitation spectra of atomic Xe, Cs and Ba , 1984 .

[46]  C. Fischer,et al.  Collapse of the 4f orbital for Xe-like ions , 1983 .

[47]  J. Wilson,et al.  3d photoabsorption in gaseous and solid xenon , 1983 .

[48]  A. Müller,et al.  Development of single‐particle detectors for keV ions , 1982 .

[49]  M. Ohno.  Breakdown of the one-electron picture in 3d-1→4p-1 X-ray emission spectrum of Xe , 1982 .

[50]  M. Amusia,et al.  On the existence of a collective level in the Xe-atom , 1978 .

[51]  Kai Siegbahn,et al.  Lifetime Broadening and CI-Resonances Observed in ESCA , 1976 .

[52]  Ulrik Gelius,et al.  Recent progress in ESCA studies of gases , 1974 .

[53]  S. Manson,et al.  Photoionization of the Noble Gases: Cross Sections and Angular Distributions , 1972 .

[54]  K. Siegbahn.  ESCA applied to free molecules , 1969 .

[55]  J. Cooper,et al.  Photo-Ionization in the Soft x-Ray Range: 1 Z Dependence in a Central-Potential Model , 1968 .

[56]  R. Deslattes.  PHOTOIONIZATION OF THE M SHELL OF XENON. , 1968 .