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Possible generation of π-condensation in a free space by collisions between photons and protons
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作者 Qi-Ren Zhang 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第12期196-199,共4页
A sharply peaked structure is found in the angular distribution of emitted π~+ mesons from photon–proton collisions.This offers a possible way to generate a π~+-condensation in free space. To make the stimulated em... A sharply peaked structure is found in the angular distribution of emitted π~+ mesons from photon–proton collisions.This offers a possible way to generate a π~+-condensation in free space. To make the stimulated emission of π~+-mesons efficient, a ring resonator is designed. 展开更多
关键词 hadron quantum electrodynamics stimulated π^+-emission π-condensation ring resonator
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Impact of formation water on the generation of H2S in condensate reservoirs: a case study from the deep Ordovician in the Tazhong Uplift of the Tarim Basin, NW China 被引量:2
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作者 Jin Su Yu Wang +9 位作者 Xiao-Mei Wang Kun He Hai-Jun Yang Hui-Tong Wang Hua-Jian Wang Bin Zhang Ling Huang Na Weng Li-Na Bi Zhi-Hua Xiao 《Petroleum Science》 SCIE CAS CSCD 2017年第3期507-519,共13页
A number of condensate reservoirs with high concentrations of H2S have been discovered in the deep dolomite reservoirs of the lower Ordovician Yingshan Formation(O1y) in the Tazhong Uplift, where the formation water... A number of condensate reservoirs with high concentrations of H2S have been discovered in the deep dolomite reservoirs of the lower Ordovician Yingshan Formation(O1y) in the Tazhong Uplift, where the formation water has a high p H value. In the O1y reservoir, the concentrations of Mg^2+ and SO4^2-in the formation water are higher than those in the upper Ordovician formation.The concentration of H2 S in the condensate reservoirs and the concentration of Mg^2+in the formation water correlate well in the O1y reservoirs of the Tazhong Uplift, which indicates a presumed thermochemical sulfate reduction(TSR) origin of H2S according to the oxidation theory of contact ion-pairs(CIPs). Besides, the p H values of the formation water are positively correlated with the concentration of H2S in the condensate reservoirs, which may indicate that high p H might be another factor to promote and maintain TSR. Oil–source correlation of biomarkers in the sulfuretted condensates indicates the Cambrian source rocks could be the origin of condensates. The formation water in the condensate reservoirs of O1y is similar to that in the Cambrian; therefore, the TSR of sulfate-CIPs likelyoccurred in the Cambrian. High H2S-bearing condensates are mainly located near the No. 1 Fault and NE-SW strikeslip faults, which are the major migration pathway of deep fluids in the Tazhong Uplift. The redox between sulfateCIPs and hydrocarbons is the generation mechanism of H2S in the deep dolomite condensate reservoirs of the Tazhong Uplift. This finding should be helpful to predict the fluid properties of deep dolomite reservoirs. 展开更多
关键词 Formation water Sulfate-CIPs - TSR -condensates Dolomite reservoir Tarim basin
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New microscopic wave function of α-condensation 被引量:1
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作者 Akihiro TOHSAKI 《Frontiers of physics》 SCIE CSCD 2011年第3期320-336,共17页
We explain how to treat a microscopic wave function of α-condensation taking a 3α-nucleus as a typical example. The wave function has been originally proposed ten years before by Horiuehi, Ropke, Schuck and the pres... We explain how to treat a microscopic wave function of α-condensation taking a 3α-nucleus as a typical example. The wave function has been originally proposed ten years before by Horiuehi, Ropke, Schuck and the present author (Phys. Rev. Lett., 2001, 87: 192501). The microscopic model, which fully takes into account the Pauli principle between all the constituent nucleons, effective inter- nucleon forces and the Coulomb force, can play an important role in reproducing an α-gas nature thanks to α-condensation as an excited state of α-like nuclei. An essential point of the wave function is to describe their ground state simultaneously. We study its typical features by giving an analytical formula of the norm kernel and the kernel concerning the one-body operator for 3α-condensation. 展开更多
关键词 α-cluster model analytical formula α-condensation
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