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Title: Evidence of high-n hollow-ion emission from Si ions pumped by ultraintense x-rays from relativistic laser plasma

Journal Article · · Europhysics Letters
ORCiD logo [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [9];  [10];  [10];  [10];  [11];  [12];  [13];  [14];  [14];  [7];  [15]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Theoretical Division
  2. Osaka Univ., Suita (Japan). Inst. for Academic Initiatives
  3. Russian Academy of Sciences (RAS), Moscow (Russian Federation). Joint Institute for High Temperatures; National Research Nuclear University MEPhl, Moscow (Russian Federation)
  4. Univ. of York (United Kingdom). Dept. of Physics
  5. Univ. of Strathclyde, Glasglow (United Kingdom). Dept. of Physics
  6. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Theoretical Division
  7. Univ. of Strathclyde, Glasglow (United Kingdom). Dept. of Physics
  8. Russian Academy of Sciences (RAS), Moscow (Russian Federation). Joint Institute for High Temperatures; Osaka Univ., Suita (Japan). Inst. for Academic Initiatives
  9. Russian Academy of Sciences (RAS), Moscow (Russian Federation). Joint Institute for High Temperatures; National Research Nuclear University MEPhl, Moscow (Russian Federation)
  10. STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire (United Kingdom)
  11. Max Born Institute, Berlin (Germany); ELI-ALPS Research Institute, Szeged (Hungary)
  12. Friedrich Schiller Univ. Jena, Jena (Germany). Inst. für Optik und Quantenelektronic
  13. Friedrich Schiller Univ. Jena, Jena (Germany). Inst. für Optik und Quantenelektronic
  14. Osaka Univ., Suita (Japan)
  15. Univ. of York (United Kingdom). Dept. of Physics
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We report on the first observation of high-n hollow ions (ions having no electrons in the K or L shells) produced in Si targets via pumping by ultra-intense x-ray radiation produced in intense laser-plasma interactions reaching the radiation dominant kinetics regime (RDKR). The existence of these new types of hollow ions in high-energy density plasma has been found via observation of highly resolved x-ray emission spectra of silicon plasma. This has been confirmed by plasma kinetics calculations, underscoring the ability of powerful radiation sources to fully strip electrons from the innermost shells of light atoms. Hollow-ions spectral diagnostics provide a unique opportunity to characterize powerful x-ray radiation of laboratory and astrophysical plasmas. With the use of this technique we provide evidence for the existence of the RDKR via observation of asymmetry in the observed radiation of hollow ions from the front and rear sides of the target.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1498043
Report Number(s):
LA-UR-16-20472
Journal Information:
Europhysics Letters, Vol. 114, Issue 3; ISSN 0295-5075
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

Cited By (1)

High resolution X-ray spectra of stainless steel foils irradiated by femtosecond laser pulses with ultra-relativistic intensities journal January 2017

Figures / Tables (4)

Figure 1(p. 4)figure Figure 1
Figure 2(p. 5)figure Figure 2
Figure 3(p. 7)figure Figure 3
Figure 4(p. 8)figure Figure 4

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