نتایج جستجو برای: accelerated heavy ions

تعداد نتایج: 311182  

2003
T. E. Cravens J. H. Waite T. I. Gombosi N. Lugaz G. R. Gladstone B. H. Mauk R. J. MacDowall

[1] The first observations of Jupiter made by the Chandra X-Ray Observatory revealed a powerful X-ray aurora located in the polar caps. The X-ray emission exhibited a 40-min periodicity. Such 40-min periodicities have previously been seen in energetic particle fluxes and in Jovian radio emission. This paper develops scenarios in which the X-ray emission is produced by energetic heavy ion precip...

Journal: :journal of chemical health risks 0
m. ghaedi department of chemistry, graduate student, firuz abad branch, islamic azad university, fars, iran n. mosallanejad department of chemistry, graduate student, firuz abad branch, islamic azad university, fars, iran

adsorption is a fundamental process in the physicochemical treatment of wastewaters which industries employ to reduce hazardous organic and inorganic wastes in effluents. in recent years the use of low-cost adsorbents has been widely investigated as a replacement for the currently costly methods of removing heavy metal ions from wastewater. it is well-known that cellulosic waste materials can b...

2006
Carlos A. Salgado

The advent of collider energies to heavy–ion physics is leading to a profound change in the field. The new tools available, specially the access to the large transverse momentum part of the spectrum, allow for an unprecedented characterization of the high–density state created in such collisions. Accordingly, the traditional goal of producing a Quark-Gluon Plasma, the deconfined state of quarks...

2001
D. Kharzeev

This short paper is an attempt to describe a theorist’s view of the goals of relativistic heavy ion program which has just entered the collider era. These goals are centered around understanding the properties and the critical behavior of Quantum Chromo–Dynamics (QCD) in the non–linear regime of high color field strength and high parton density. Some of the current theoretical challenges are hi...

2009
W. Bayer W. Barth L. Dahl P. Forck L. Groening I. Hofmann

At GSI heavy ion beams are accelerated by the UNIversal Linear ACcelerator UNILAC (see Fig. 1) and the heavy ion synchrotron SIS 18. Heavy ion beams are delivered to the High Current Injector (HSI) from two different ion source terminals: Penning type (PIG) sources for low and MUCIS/ MEVVA type sources for high beam intensities. An RFQ and two IH structures accelerate the ions from 2.2 keV/u up...

Surface water contains a large number of pollutants, particularly human pathogens, organic toxicants and heavy metals. Due to the toxic nature of heavy metals towards marine organisms, its removal from the environment has been a growing issue. The biosorption of heavy metal ions from surface water using fish scales has emerged as an environmentally friendly technique. This study assessed the de...

Journal: :Investigative ophthalmology & visual science 1993
B V Worgul D J Brenner C Medvedovsky G R Merriam Y Huang

PURPOSE To determine the cataractogenic potential dose of high velocity iron ions as a fixation of dose administered singly or fractionated. The dose is critical to risk assessment and to theories of radiation action and cataractogenesis. METHODS Twenty-eight-day-old rats were examined by slit-lamp biomicroscopy on a weekly-bi-weekly basis for more than 2 yr after radiation exposure. For the ...

Journal: Pollution 2019

Surface water contains a large number of pollutants, particularly human pathogens, organic toxicants and heavy metals. Due to the toxic nature of heavy metals towards marine organisms, its removal from the environment has been a growing issue. The biosorption of heavy metal ions from surface water using fish scales has emerged as an environmentally friendly technique. This study assessed the de...

2008
C. Omet P. Spiller

Introduction To prepare the acceleration of highest intensities of intermediate charge state heavy ion beams for the FAIR project, several technical projects have been summarized in the SIS18 upgrade program. The various technical measures of this program are continuously accompanied and verified by machine experiments. Major goal is the reduction of ionization beam loss. The strong dependence ...

2016
M. A. Dayeh

In large SEP events, ions can be accelerated at CME-driven shocks to very high energies. Spectra of heavy ions in many large SEP events show features such as roll-overs or spectral breaks. In some events when the spectra are plotted in energy/nucleon they can be shifted relative to each other to make the spectral breaks align. The amount of shift is charge-to-mass ratio (Q/A) dependent and vari...

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