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Title: Nonsequential two-photon absorption from the K shell in solid zirconium

Journal Article · · Physical Review A
 [1];  [2];  [1];  [1];  [3];  [1];  [4];  [3];  [5]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Univ. of Nebraska - Lincoln, Lincoln, NE (United States)
  3. RIKEN SPring-8 Center, Hyogo (Japan)
  4. Bar IIan Univ., Ramat Gan (Israel)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States)

Here, we report the observation of nonsequential two-photon absorption from the K shell of solid Zr (atomic number Z=40) using intense x-ray pulses from the Spring-8 Angstrom Compact Free-Electron Laser (SACLA). We determine the generalized nonlinear two-photon absorption cross section at the two-photon threshold in the range of 3.9–57 ×10–60 cm4s bounded by the estimated uncertainty in the absolute intensity. The lower limit is consistent with the prediction of 3.1 ×10–60 cm4s from the nonresonant Z–6 scaling for hydrogenic ions in the nonrelativistic, dipole limit.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1360176
Alternate ID(s):
OSTI ID: 1329504
Journal Information:
Physical Review A, Vol. 94, Issue 4; ISSN 2469-9926
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 33 works
Citation information provided by
Web of Science

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Cited By (12)

Roadmap of ultrafast x-ray atomic and molecular physics journal January 2018
Fluorescence polarization as a precise tool for understanding nonsequential many-photon ionization journal July 2019
Relativistic calculations of the nonresonant two-photon ionization of neutral atoms journal December 2016
Photoelectron distribution of nonresonant two-photon ionization of neutral atoms journal July 2017
Resonant inelastic scattering of two x-ray photons by a many-electron atom journal December 2018
Nonlinear Spectroscopy with X-Ray Two-Photon Absorption in Metallic Copper journal August 2018
Intense sub-micrometre focusing of soft X-ray free-electron laser beyond 10 16 W cm −2 with an ellipsoidal mirror journal August 2019
Short-wavelength free-electron laser sources and science: a review text January 2017
Roadmap of ultrafast x-ray atomic and molecular physics text January 2019
Short-wavelength free-electron laser sources and science: a review journal October 2017
Roadmap of ultrafast x-ray atomic and molecular physics text January 2018
Photoelectron distribution of non-resonant two-photon ionization of neutral atoms text January 2017