Xenon
نویسندگان
چکیده
منابع مشابه
Preparation of Neutron-activated Xenon for Liquid Xenon Detector Calibration
We report the preparation of neutron-activated xenon for the calibration of liquid xenon (LXe) detectors. Gamma rays from the decay of xenon metastable states, produced by fast neutron activation, were detected and their activities measured in a LXe scintillation detector. Following a five-day activation of natural xenon gas with a Cf (4× 10 n/s) source, the activities of two gamma ray lines at...
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The vapor-liquid equilibrium of binary mixtures of xenon + SF6 has been measured at nine temperatures from 235.34 to 295.79 K and pressures up to 6.5 MPa. The mixture critical line is found to be continuous between the critical points of the pure components, and hence, the system can be classified as type I phase behavior in the scheme of van Konynenburg and Scott. The excess Gibbs free energie...
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Xenon is the Greek word for stranger. The gas was discovered by Ramsay and Travers in 1898 in the residue left after evaporating liquid air components. It was originally labelled, with others, an inert gas but after discovery of some compounds this group was renamed the noble gases in 1962. It is the heaviest stable gas in this group and the only one which is anaesthetic under normobaric condit...
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The recent isolation of the metal ± xenon compound [AuXe4] ([Sb2F11] )2 (1)[1] raises a number of questions. The salt 1 is formed from Au2 , dissolved in HF/SbF5, in the presence of xenon. If the concentration of SbF5 is fairly high (ca. 0.5 mol SbF5 in 1 mol HF) 1 forms as the sole product in two crystallographically different modifications: a triclinic modification,[1] and a tetragonal modifi...
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Since hyperpolarized 129Xe MRI was first demonstrated in the lung, air space imaging using hyperpolarized noble gases (129Xe and 3He) has progressed at a rapid rate (Goodson, 2002; Zhou, 2011c). Owing to high lipid solubility, absence of background signal in biological tissue, non-invasiveness, lack of radioactivity, different relaxation to oxygenated and deoxygenated blood, and larger chemical...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2017
ISSN: 0735-1097
DOI: 10.1016/j.jacc.2017.10.004