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Laboratory Measurements and Modeling of the Fe XVII X-Ray Spectrum
Detailed measurements, line identifications, and modeling calculations of the Fe XVII L-shell emission spectrum between 9.8 and 17.5 A are presented. The measurements were carried out on an electron
Diagnostic Utility of the Relative Intensity of 3C to 3D in Fe XVII
The relative intensity R of the resonance and intercombination line in neon-like Fe XVII, located at 15.01 and 15.26 A, respectively, has been measured at the Lawrence Livermore National Laboratory
Relativistic positron creation using ultraintense short pulse lasers.
Modeling based on the measurements indicate the positron density to be approximately 10;{16} positrons/cm;{3}, the highest ever created in the laboratory.
Laboratory Simulation of Charge Exchange-Produced X-ray Emission from Comets
A charge exchange emission model is developed that successfully reproduces the soft x-ray spectrum of comet Linear C/1999 S4, observed with the Chandra X-ray Observatory.
Charge Exchange Spectra of Hydrogenic and He-like Iron
We present H-like Fe XXVI and He-like Fe XXV charge-exchange spectra resulting from collisions of highly charged iron with N2 gas at an energy of ~10 eV amu-1 in an electron beam ion trap. Although
A comprehensive survey of Dn � 1 iron L-shell X-ray line emission is presented. We have used the electron beam ion trap EBIT-II at the Lawrence Livermore National Laboratory and equipped with flat
Laboratory wavelengths of K-shell resonance lines of O V and O VI
We present wavelength measurements of K-shell resonance lines of O V and O VI using the University of California Lawrence Livermore National Laboratory EBIT-I electron beam ion trap. The wavelength
Energy splitting of the ground-state doublet in the nucleus 229Th.
The energy splitting of the 229Th ground-state doublet is measured to be 7.6+/-0.5 eV, significantly greater than earlier measurements. Gamma rays produced following the alpha decay of 233U (105
Observations of the effect of ionization-potential depression in hot dense plasma.
The experimental data are in closer agreement with simulations using the model of Stewart and Pyatt and an alternative due to Ecker and Kröll suggested by recent x-ray free-electron laser experiments is suggested.
Making relativistic positrons using ultraintense short pulse lasers
This paper describes a new positron source using ultraintense short pulse lasers. Although it has been theoretically studied since the 1970s, the use of lasers as a valuable new positron source was