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Recombination-enhanced surface expansion of clusters in intense soft x-ray laser pulses

Journal Article · · Physical Review Letters
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  1. Technische Univ. Berlin, Berlin (Germany)
  2. Technische Univ. Berlin, Berlin (Germany); La Trobe Univ., Bundoora, VIC (Australia)
  3. Technische Univ. Berlin, Berlin (Germany); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States); Technische Univ. Berlin, Berlin (Germany)
  5. Helmholtz-Zentrum Berlin, Berlin (Germany)
  6. Univ. Munster, Munster (Germany)
  7. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  8. Univ. Rostock, Rostock (Germany)
  9. SLAC National Accelerator Lab., Menlo Park, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States)
Here, we studied the nanoplasma formation and explosion dynamics of single large xenon clusters in ultrashort, intense x-ray free-electron laser pulses via ion spectroscopy. The simultaneous measurement of single-shot diffraction images enabled a single-cluster analysis that is free from any averaging over the cluster size and laser intensity distributions. The measured charge state-resolved ion energy spectra show narrow distributions with peak positions that scale linearly with final ion charge state. These two distinct signatures are attributed to highly efficient recombination that eventually leads to the dominant formation of neutral atoms in the cluster. The measured mean ion energies exceed the value expected without recombination by more than an order of magnitude, indicating that the energy release resulting from electron-ion recombination constitutes a previously unnoticed nanoplasma heating process. This conclusion is supported by results from semiclassical molecular dynamics simulations.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357; AC02-76SF00515
OSTI ID:
1348868
Alternate ID(s):
OSTI ID: 1328250
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 117; ISSN 0031-9007; ISSN PRLTAO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (5)

Plasma channel formation in NIR laser-irradiated carrier gas from an aerosol nanoparticle injector journal June 2019
Imaging plasma formation in isolated nanoparticles with ultrafast resonant scattering journal May 2020
THz streak camera performance for single-shot characterization of XUV pulses with complex temporal structures journal January 2020
THz streak camera performance for single-shot characterization of XUV pulses with complex temporal structures text January 2020
Imaging plasma formation in isolated nanoparticles with ultrafast resonant scattering text January 2020

Figures / Tables (4)


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