K-edge x-ray absorption spectroscopy of laser-generated Kr{sup +} and Kr{sup 2+}.

Journal Article · Mon Oct 01 00:00:00 EDT 2007 · Phys. Rev. A

DOI:https://doi.org/10.1103/PhysRevA.76.043421· OSTI ID:935644

Southworth, S H; Arms, D A; Dufresne, E M; Dunford, R W; Ederer, D L; Hoehr, C; Kanter, E P; Krassig, B; Landahl, E C; Peterson, E R; Rudati, J; Santra, R; Walko, D A; Young, L

Tunable, polarized, microfocused x-ray pulses were used to record x-ray absorption spectra across the K edges of Kr{sup +} and Kr{sup 2+} produced by laser ionization of Kr. Prominent 1s {yields} 4p and 5p excitations are observed below the 1s ionization thresholds in accord with calculated transition energies and probabilities. Due to alignment of 4p hole states in the laser-ionization process, the Kr{sup +} 1s {yields} 4p cross section varies with respect to the angle between the laser and x-ray polarization vectors. This effect is used to determine the Kr{sup +} 4p{sub 3/2} and 4p{sub 1/2} quantum state populations, and these are compared with results of an adiabatic strong-field ionization theory that includes spin-orbit coupling.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 935644
• Report Number(s): ANL/PHY/JA-59899; PLRAAN; TRN: US200816%%645
• Journal Information: Phys. Rev. A, Vol. 76, Issue Oct. 2007; ISSN 1050-2947
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
X-RAY SPECTROSCOPY
ABSORPTION SPECTROSCOPY
KRYPTON
LASER-RADIATION HEATING
IONIZATION
ELECTRONIC STRUCTURE