Inner-shell photoionization of stored positive ions using synchrotron radiation

• Published in: Physical review letters Vol. 66; no. 23; pp. 2956 - 2959
• Main Authors: Kravis, SD, Church, DA, Johnson, BM, Meron, M, Jones, KW, Levin, J, Sellin, IA, Azuma, Y, Mansour, NB, Berry, HG, Druetta, M
• Format: Journal Article
• Language: English
• Published: United States 10-06-1991
• Subjects: 640302 - Atomic, Molecular & Chemical Physics- Atomic & Molecular Properties & Theory; ARGON IONS; ATOM COLLISIONS; ATOMIC AND MOLECULAR PHYSICS; BREMSSTRAHLUNG; CATIONS; CHARGE DISTRIBUTION; CHARGE STATE; CHARGED PARTICLES; COLLISIONS; CORRELATIONS; COUPLING; DATA; DIFFERENTIAL EQUATIONS; ELECTROMAGNETIC RADIATION; ELECTRON COLLISIONS; ELECTRON-ATOM COLLISIONS; ELECTRONIC STRUCTURE; EQUATIONS; EXPERIMENTAL DATA; FLUIDS; GASES; INFORMATION; INNER-SHELL IONIZATION; INVARIANCE PRINCIPLES; ION SOURCES; IONIZATION; IONS; K SHELL; NUMERICAL DATA; PENNING ION SOURCES; PHOTOIONIZATION; RADIATIONS; SYNCHROTRON RADIATION; T INVARIANCE; TARGETS; TRAPPING
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.66.2956

We have measured the distribution of photoion charge states resulting from vacancy cascades and electron shakeoff following {ital K}-shell photoionization of Ar{sup 2+} ions. The Ar{sup 2+} ions were produced by electron-impact ionization of Ar, stored in a Penning ion trap, and then photoionized using broadband synchrotron radiation. Time-reversed integration of coupled differential equations was used to account for contributions from electron capture with residual gas. The results are in reasonable agreement with a simple theoretical prediction.