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Title: Self-photopumped x-ray lasers from elements in the Ne-like and Ni-like ionization state

In this paper, we report on experiments on the self-photopumped 3d 1P 1→3p 1P 1 and 4f 1P 1→4d 1P 1 laser transitions in Ne-like and Ni-like ions, respectively. Lasing on the self-photopumped laser line has been observed for the first time for a number of elements including Ne-like V, Cr, Fe, and Co as well as Ni-like Ru and Pd. We have investigated the lasing process by varying the prepulse delay, which shows a shift of the optimum main pulse to second prepulse delays towards lower values with higher atomic number Z. Time-resolved measurements showed that self-photopumped and monopole collision-pumped lasing emission occurs essentially simultaneously. Finally, accurate wavelength measurements and calculations are shown to be in excellent agreement.
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2]
  1. Univ. of Bern (Switzerland). Inst. of Applied Physics
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Report Number(s):
Journal ID: ISSN 0030-4018
Grant/Contract Number:
AC52-07NA27344; 200020_144380
Accepted Manuscript
Journal Name:
Optics Communications
Additional Journal Information:
Journal Volume: 382; Journal ID: ISSN 0030-4018
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of Bern (Switzerland)
Sponsoring Org:
USDOE; Swiss National Science Foundation (SNSF)
Country of Publication:
United States
74 ATOMIC AND MOLECULAR PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; x-ray laser; self photo-pumped; neon-like; nickel-like
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1433393