X Radiation from Optical and Inner-Shell Transitions in a Highly Ionized Dense Plasma

Lie, T. N.; Elton, R. C.

doi:10.1103/physreva.3.865

Cited by 107 publications

(17 citation statements)

References 15 publications

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“…The use of ion excitation of X-rays, as in trace element analysis, is dependent upon the proper identification of X-ray lines. K transitions in Ti XIV-Ti XXII have recently been observed in a point plasma [13]. Multiple inner shell ionization is also observed in many X-ray flare events [14].…”

Section: Discussionmentioning

confidence: 98%

Potassium and titaniumKX-ray de-excitation induced by ion bombardment

et al. 1973

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KX-ray de-excitation spectra have been produced for K and Ti by proton, alpha and oxygen ion beam bombardment. These spectra have been measured with a crystal spectrometer of resolution (FWHM) of 10 and 13 ev for the K~I, 2 line in K and Ti respectively. The additional lines not found in the normal X-ray spectra are attributed to multiple inner shell ionization. The energy shifts and relative intensities of these lines are compared to theoretical predictions.

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Section: Discussionmentioning

confidence: 98%

Potassium and titaniumKX-ray de-excitation induced by ion bombardment

et al. 1973

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“…1 for o/, = I and 5, and for '/', = T,, The analysis is carried up to molybdenum (/ = 42), which is the heaviest element for which high stages of ioni/ation have been reported. 17 It is seen that the parameters involved scale with Z such thai /. """ is approximately constant for elements heavier than / ~ M ai.d never becomes less than 10 cm, which is somewhat long for laser-produced plasmas.…”

Section: Resultsmentioning

confidence: 99%

“…m order to measuiu i^ vs. N the seif-defocusing of mode locked Nd:YA(. pulses in a 100 cm long Cs vapor cell at several densities between n -.080 X I0 17 and .32 X ii)l 7 cm -3 was studied. The input beam was a single 35 psec pulse of 1.1 mm 1/e dunieter and 50-60 MW peak power.…”

Section: ^1mentioning

confidence: 99%

ARPA/NRL X-Ray Laser Program - Semiannual Technical Report to Defense Advanced Research Projects Agency, 1 Jul 1974-31 December 1974

WASHINGTON¹

1975

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“…A burst of radiation from high-current discharges (with current densities of the order 1011 A/cm2), such as low-inductance vacuum sparks, plasma focus devices, and exploded wires is found over a broad spectral range: from the microwave region to the hard X-ray region [51]- [54]. Recorded data show that the radiation bursts are correlated with dips in the current waveform, i.e., interruptions in the current flow.…”

Section: B Experimental Studies Of Synchrotron-emitting Bennett Pinchesmentioning

confidence: 91%

Evolution of the Plasma Universe: I. Double Radio Galaxies, Quasars, and Extragalactic Jets

Peratt

1986

IEEE Trans. Plasma Sci.

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Abstract-Cosmic plasma physics and our concept of the universe is in a state of rapid revision. This change started with in-situ measurements of plasmas in Earth's ionosphere, cometary atmospheres, and planetary magnetospheres; the translation of knowledge from laboratory experiments to astrophysical phenomena; discoveries of helical and filamentary plasma structures in the Galaxy and double radio sources; and the particle simulation of plasmas not accessible to in-situ measurement. Because of these, Birkeland (field-aligned) currents, double layers, and magnetic-field-aligned electric fields are now known to be far more important to the evolution of space plasma, including the acceleration of charged particles to high energies, than previously thought. This paper and its sequel investigate the observational evidence for a plasma universe threaded by Birkeland currents or filaments. This model of the universe was inspired by the advent of threedimensional fully electromagnetic particle simulations and their application to the study of laboratory z pinches. This study resulted in totally unexpected phenomena in the data post-processed from the simulation particle, field, and history dumps. In particular, when the simulation parameters were scaled to galactic dimensions, the interaction between pinched filaments led to synchrotron radiation whose emission properties were found to share the following characteristics with double radio galaxies and quasars: power magnitude, isophotal morphology, spectra, brightness along source, polarization, and jets. The evolution of these pinched synchrotron emitting plasmas to elliptical, peculiar, and spiral galaxies by continuing the simulation run is addressed in a sequel paper.

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X Radiation from Optical and Inner-Shell Transitions in a Highly Ionized Dense Plasma

Cited by 107 publications

References 15 publications

Potassium and titaniumKX-ray de-excitation induced by ion bombardment

Potassium and titaniumKX-ray de-excitation induced by ion bombardment

ARPA/NRL X-Ray Laser Program - Semiannual Technical Report to Defense Advanced Research Projects Agency, 1 Jul 1974-31 December 1974

Evolution of the Plasma Universe: I. Double Radio Galaxies, Quasars, and Extragalactic Jets

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