云南高校图书馆联盟文献共享服务平台- POSITRONIUM

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The possible tetraquark states cccc observed by the LHCb experiment被引量：1: 《Science Bulletin》2020年第23期1952-1953,共2页Kuang-Ta Chaoa Shi-Lin Zhua; supported by the National Natural Science Foundation of China (11975033 and 11745006)。; The molecular positronium (sometimes also denoted as di-positronium) was the multi-electron bound state composed of e+e-e+e-,where the electromagnetic interaction is the underlying driving force.Although its existence...; 关键词：force. QUARK POSITRONIUM

Photon Emissions from a Spinor Bose–Einstein Condensate of Positroniums: 《Communications in Theoretical Physics》2017年第8期236-244,共9页郑晨张芃易俗; Supported by National Natural Science Foundation of China under Grant Nos.11434011,11674334,11421063,and 11674393;National Key Basic Research Special Foundation of China under Grant No.2012CB922104;the Fundamental Research Funds for the Central Universities;the Research Funds of Renmin University of China under Grant Nos.16XNLQ03 and 17XNH054; We investigate the quantum dynamics of the decay of a multiple-component positronium condensate into pairs of photons. A positronium atom has four internal spin states which are interconvertible through s-wave interac...; 关键词：POSITRONIUM spinor Bose Einstein condensate photon emission

Does the Fifth Sate of Matter Originate the Early Universe？: 《Journal of Physical Science and Application》2015年第6期407-414,共8页Nagendra Nath Mondal; In this article we have demonstrated BEC （Bose-Einstein Condensate） which is the fifth state of matter. Recent development of gamma-ray laser and scenario of black holes are highlighted. From the Stephen W. Hawking...; 关键词：Black holes BEC COSMOLOGY GAMMA-RAY laser material positronium.

<i>L<sub>α</sub></i>Line of Dark Positronium as a Nongravitational Detection of DM: 《Journal of Modern Physics》2015年第13期1833-1839,共7页V. Burdyuzha V. Charugin; An attempt to predict the new atomic dark matter lines is done on the example of a dark lepton atom-positronium. Its Layman-alpha line with the energy near 3 GeV may be observable if the appropriate conditions are rea...; 关键词：Atomic DARK Matter POSITRONIUM COMPTON Scattering

Discovered Solar Positronium: 《International Journal of Astronomy and Astrophysics》2014年第4期620-627,共8页Nagendra Nath Mondal; I describe a method for the observation of Positronium (Ps) involvement in the solar radiation spectrum. In this method, Rydberg-Ritz’s principle and Planck’s radiation formula are used to acquire information of the...; 关键词：LED LIGHT POSITRONIUM SIMULATION SPECTROMETER

Effect of Conductive Fillers on the Cyclic Stress-Strain and Nano-Scale Free Volume Properties of Silicone Rubber被引量：1: 《Chinese Journal of Polymer Science》2014年第5期558-567,共10页M.H.Abd-El Salam S.El-Gamal M.Mohsen D.M.Abd El-Maqsoud; The effect of carbon black （CB） and graphite （G） powders on the macroscopic and nano-scale free volume properties of silicone rubber based on poly（di-methylsiloxane）（PDMS） was studied through thermal and cycl...; 关键词：Positron annihilation POSITRONIUM Free volume Si-rubber Composite Cyclic mechanical properties.

Positronium Decay in a Circular Polarized Laser Field: 《Communications in Theoretical Physics》2013年第12期747-752,共6页陈裕启吴培; Supported by the National Natural Science Foundation of China under Grant No.11275242; We calculate the lifetime of both the o-Ps and the p-Ps positronium annihilation decay Ps →γγ in the strong circular polarized laser field. We take a strategy of the faztorization to separate the effects caused by ...; 关键词：POSITRONIUM strong-field physics LASER DECAY

Positron-Excited Lithium Atom Collisions: 《Journal of Modern Physics》2013年第6期766-771,共6页Salah Y. El-Bakry El-Sayed A. El-Dahshan Khadija Ali; The inelastic scattering of positrons by excited lithium alkali atoms Li*(2p) have been investigated within the frame work of the coupled-static and frozen-core approximations with the assumption that the elastic and ...; 关键词：Positrons POSITRONIUM Formation Alkali ATOMS COLLISIONS INELASTIC Scattering CROSS-SECTIONS Lithium Polarization Potential

Positronium Annihilation in Oxygen and Nitrogen Mixture: 《Wuhan University Journal of Natural Sciences》2013年第2期142-146,共5页WANG Juncheng HE Chunqing DAI Yiqun WANG Shaojie; Supported by the National Natural Science Foundation of China(10975108and10974149);the Research Fund for the Doctoral Program of Higher Education of China(20090141120069); Formed in silica aerogels, positronium annihilation in oxygen and nitrogen mixture is studied by a simple and convenient method. The results show that ortho-positronium （o-Ps） lifetime is significantly shortened whe...; 关键词：POSITRONIUM positron annihilation QUENCHING silicaaerogel

Unnatural parity resonance states in positron-excited hydrogen scattering被引量：2: 《Chinese Physics B》2012年第12期207-211,共5页马佳周雅君王远成; Project supported by the National Natural Science Foundation of China(Grant No.10674055); The coupled-channels optical method for positron scattering has been applied to investigate resonance states with unnatural parities in a positron-excited hydrogen system. The positronium formation channels and contin...; 关键词：positrons excited-hydrogen atom unnatural parity resonances POSITRONIUM coupled-channels optical method

POSITRONIUM