Photoionization study of Kr+ and Xe+ ions with the combined use of a merged-beam set-up and an ion trap

Photoionization cross sections of halogen-like Kr+ and Xe+ ions have been measured in the photon energy range extending up to 15 eV above the threshold. Two different devices were used, a merged-beam set-up and an ion trap. Combination of the two techniques allows for the extraction of the pure ground state ionization cross section on an absolute scale. Multiconfiguration Dirac–Fock calculations reproduce the magnitude of the direct photoionization cross sections well.

[1]  C. Keitel,et al.  Photoionization of N3 + and Ar8 + in an electron beam ion trap by synchrotron radiation , 2010 .

[2]  J. Bozek,et al.  Experimental link of photoionization of Sc2+ to photorecombination of Sc3+: an application of detailed balance in a unique atomic system. , 2002, Physical review letters.

[3]  S. Epp,et al.  Soft x-ray laser spectroscopy on trapped highly charged ions at FLASH. , 2007, Physical review letters.

[4]  Mansour,et al.  Inner-shell photoionization of stored positive ions using synchrotron radiation. , 1991, Physical review letters.

[5]  T. Möller,et al.  X-ray spectroscopy on size-selected clusters in an ion trap: from the molecular limit to bulk properties , 2009 .

[6]  Jos Oomens,et al.  Gas-phase zwitterion stabilization by a metal dication. , 2007, Journal of the American Chemical Society.

[7]  Johnson,et al.  Electron transfer from H2 and Ar to stored multiply charged argon ions produced by synchrotron radiation. , 1992, Physical review. A, Atomic, molecular, and optical physics.

[8]  S. Svensson,et al.  High-resolution study of the correlation satellites in photoelectron spectra of the rare gases , 1996 .

[9]  J Bruneau,et al.  Correlation and relaxation effects in ns2-nsnp transitions , 1984 .

[10]  Yuri Ralchenko,et al.  NIST Atomic Spectra Database , 2000 .

[11]  J. Berkowitz,et al.  Photoionization of atomic iodine and atomic tellurium , 1981 .

[12]  J. Bozek,et al.  Absolute Photoionization Cross Section Measurements of O II Ions from 29.7 to 46.2 eV , 2003 .

[13]  K. Nielsen,et al.  Systematic investigation of a magnetic ion source for an electromagnetic isotope separator , 1957 .

[14]  M. Coreno,et al.  Photoionization cross section of Xe+ ion in the pure 5p5 2P3/2 ground level. , 2008, Physical review letters.

[15]  J. V. Elp,et al.  Absolute measurements of photoionization cross-sections for ions , 2005 .

[16]  Costello,et al.  Giant-dipole-resonance absorption in atomic thorium by a novel two-laser technique. , 1986, Physical review letters.

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

[18]  J. West,et al.  Absolute cross sections for the photoionization of 4d electrons in Xe+ and Xe2+ ions , 2001 .

[19]  F. Koike,et al.  4d Photoionization of multiply charged Xeq+ (q = 1-3) ions , 1997 .

[20]  J. Bozek,et al.  Formation of long-lived CO2+ via photoionization of CO+ , 2002 .

[21]  D. J. Campbell,et al.  Chapter 1: Overview and summary , 1999 .

[22]  B. Ruscic,et al.  Photoionisation of atomic bromine , 1984 .

[23]  A. Simon,et al.  Gas phase infrared spectroscopy of selectively prepared ions. , 2002, Physical review letters.

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

[25]  J. Lemaire,et al.  Radiative lifetimes of Xe+ and Kr+ in their 2P12 spin—orbit states , 1993 .

[26]  V. Riccardo,et al.  Disruption heat loads on the JET MkIIGB divertor , 2002 .

[27]  Jonathan A. Cooper,et al.  Spectral Distribution of Atomic Oscillator Strengths , 1968 .

[28]  F. Koike,et al.  Photoionization of 4d-electrons in singly charged Xe ions , 1996 .

[29]  R. L. Brooks,et al.  Absolute, State-selective Measurements of the Photoionization Cross Sections of N+ and O+ Ions , 2002 .

[30]  C. H. Skinner,et al.  Plasma{material interactions in current tokamaks and their implications for next step fusion reactors , 2001 .

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

[32]  J. Bozek,et al.  Photoionization of metastable O+ ions: experiment and theory. , 2001, Physical review letters.

[33]  F. Innocenti,et al.  Observation and interpretation of the metastable 3p63d Ca+ ion spectrum in the 3p excitation region , 2002 .

[34]  A. Aguilar,et al.  Photoionization of Metastable O+ Ions , 2001 .

[35]  A. Kukushkin,et al.  Divertor modelling and extrapolation to reactor conditions , 2002 .

[36]  J. Costello,et al.  Extreme-UV photoabsorption spectrum of a laser-produced silicon plasma: evidence for metastable Si ions , 1998 .

[37]  J. Lemaire,et al.  MICRA: A Compact Permanent Magnet Fourier Transform Ion Cyclotron Resonance Mass Spectrometer , 2004, European journal of mass spectrometry.

[38]  R. Yoshino,et al.  Fast plasma shutdown scenarios in the JT-60U tokamak using intense mixed gas puffing , 2002 .

[39]  F. Folkmann,et al.  Absolute cross section for photoionization of CO+ leading to longlived metastable CO2+ , 2001 .

[40]  R. Santra,et al.  K-edge x-ray-absorption spectroscopy of laser-generated Kr{sup +} and Kr{sup 2+} , 2007 .