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Uncommon and Impact-Suspicious Geologic Phenomena across Jordan and Adjacent Areas, Arabian Plate
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作者 Werner Schneider Elias Salameh 《Open Journal of Geology》 2014年第12期680-717,共38页
For the discovery and analysis of Jebel Waqf as Suwwan (JWS) Impact Crater, Jordan pushed the authors to consequently focusing on other unusual geologic phenomena such as circular/oval structures (some of “crypto-vol... For the discovery and analysis of Jebel Waqf as Suwwan (JWS) Impact Crater, Jordan pushed the authors to consequently focusing on other unusual geologic phenomena such as circular/oval structures (some of “crypto-volcanic” origin), disharmonic folding, horizontal stylolites, and a broad stripe of?Sanidine-Hornfels-Facies, all of them hosted in Upper Cretaceous/Paleogene carbonate rocks exposed across Jordan and adjacent areas. Shatter cones are the most useful tools during field work in the realm of circular structures. In addition to the impact-geologic data of JWS Impact Structure hitherto available, the cooling process of melted Lower Cretaceous Kurnub-Sandstone could be verified by microscopically identified SiO2-modifications between the melting point (1714°C) and low temperatures. In comparison with the Suffield 500 tons explosion tests [20] and with the Ries Impact Crater, Germany, excavation and vaporization processes of target rocks demand drilling between Central Uplift and Inner Ring of the JWS Impact Structure (“Chert-Carbonate-Impact-Chess Game”). In a scenario: “Impacting meets Plate Tectonics”, phenomena like disharmonic folding, horizontal stylolites, and an abundance of circular/oval structures of high diameter variation through northwest Jordan are discussed under aspects of gravitational gliding, effects of seismic surface waves (Love-), transpressional structures related to Jordan Rift-Tectonics, and possible impact processes of unknown number occurred on the Arabian Plate in southeastern direction with northwest-directed impulse. The so-called “Mottled Zone” of Jordan and Palestine owning a high number (~100) of mineral neoformations with formation temperatures up to ~1120°C(pseudo-wollastonite = β-CaSiO3), is to be interpreted as of “Sanidine-Hornfels-Impact Facies” under ricochet conditions along an “Avenue of Ricochet-Impact-Thermo-Cataclysm”. Marble-related travertines represent a low temperature facies of the impact event. The temporal projection of patterns like Rapid Climate Change (RCC), astrophysical data [Hoyle’s Comet: 47], acid events in ice-cores, tektite fall, Rise and Fall of Neolithic/Bronze Age Cultures, reveals an amazing “Ensemble” of coincidences among all of these parameters since the Middle/Upper Pleistocene boundary throughout Holocene. Ten short Interval Cases are discussed as being “Rare Event”- suspicious. Myths like the “Gilgamesch Epos” and “John’s Apocalypse” surprisingly provide realistic hints on impact events comparable with modern observations and experiments, which are: approach of extraterrestrial bodies, impact cratering, earthquakes and faulting, supercyclonic whirl-storms (wildfires), effects of hot ejecta, destruction of fauna, flora, and cities, long-lasting flooding, darkness caused by ashes and dust circulating in atmosphere and stratosphere (sintwinter), and environmental pollution. Such hints were handed down in myths of ~180 ethnic peoples around the globe. “High probability Cases” focus on impact events on ~9600 yr B.P and on ~6000 yr B.P. Other “Rare Events” may have possibly occurred about ~8000 yr B.P. and on ~3200 yr. B.P. (all radiocarbon yr.cal.). Core-drilling in the pull-apart basins of the Jordan Rift System (Dead Sea, Lake Tiberias) as traps having possibly preserved volcanic and impact ejecta would be a challenging international and interdisciplinary project. 展开更多
关键词 Impact-Suspicious PHENOMENA RICOCHET IMPACT Impact-Related SiO2-Modifications Sanidine-Hornfels-Impact Facies Rapid Climate Change Holocene hoyle’s Comet Rise and Fall of Neolithic/Bronze Age Cultures Coincidence of Natural and Cultural Evidence JORDAN
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Cover Story(Issue 7,2025)Evidence of the negative parity linear chain states in ^(16)C
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作者 Masaaki Kimura 《Chinese Physics C》 2025年第7期I0001-I0001,共1页
The linear-chain structure in which three alpha particles are arranged in a straight line was initially proposed by H.Morinaga[1]as the structure of the Hoyle state of carbon-12[2].This unique idea attracted much atte... The linear-chain structure in which three alpha particles are arranged in a straight line was initially proposed by H.Morinaga[1]as the structure of the Hoyle state of carbon-12[2].This unique idea attracted much attention,but it was rejected because it could not explain the lifetime of the Hoyle state.Half a century later,the concept of the linear chain structure was revived in the physics of unstable nuclei,and experimental and theoretical research have demonstrated that this structure exists in carbon-14 and 16.The authors have conducted internationally recognized experimental research on the linear-chain structure of carbon-14 and carbon-16. 展开更多
关键词 alpha particles CARBON negative parity structure hoyle state experimental research linear chain structure
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通过4-α衰变观测^(16)O中可能的玻色凝聚态
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作者 陈家豪 叶沿林 +21 位作者 马凯 韩家兴 王东玺 林承键 贾会明 杨磊 李根 阳黎升 胡梓瑶 谭智威 魏康 蒲伟良 陈莹 楼建玲 杨晓菲 李奇特 杨再宏 骆天鹏 黄大湖 钟善豪 李智焕 许金艳 《原子核物理评论》 CAS CSCD 北大核心 2024年第1期292-298,共7页
近期在中国原子能科学研究院北京串列加速器核物理国家实验室开展的^(16)O+^(12)C非弹散射实验,给出了^(16)O中存在4-α玻色凝聚状态的新证据。实验采用多套双面硅微条带电粒子望远镜,首次在^(16)O衰变中实现了4个α粒子的准确识别(Part... 近期在中国原子能科学研究院北京串列加速器核物理国家实验室开展的^(16)O+^(12)C非弹散射实验,给出了^(16)O中存在4-α玻色凝聚状态的新证据。实验采用多套双面硅微条带电粒子望远镜,首次在^(16)O衰变中实现了4个α粒子的准确识别(Particle Identification,PID)和符合测量。在此基础上获得了高分辨的反应O值谱并重建了清晰的4-α共振态。其中在阈值附近观察到4个高显著度(大部分高于5σ)的共振态,它们按照^(12)C(Hoyle state)+α的特征模式衰变,与理论预言的类Hoyle-BEC结构及其转动带特征相一致。本观测结果将推动进一步的理论研究,实验上也需要对上述共振态做更多物理量的观测。 展开更多
关键词 集团结构 hoyle ^(16)O的共振态 高激发
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轻核α团簇结构理论和实验研究进展 被引量:4
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作者 曹喜光 马余刚 《科学通报》 EI CAS CSCD 北大核心 2015年第17期1557-1564,共8页
α团簇在轻α共轭核基态及激发态中广泛存在,轻核的α团簇结构不仅对核天体物理中核合成过程和元素丰度具有决定性影响,而且这些态的精确数据还成为检验各种新型多体理论和核力的天然实验室.本文简要总结了描述α团簇的不同理论方法,尤... α团簇在轻α共轭核基态及激发态中广泛存在,轻核的α团簇结构不仅对核天体物理中核合成过程和元素丰度具有决定性影响,而且这些态的精确数据还成为检验各种新型多体理论和核力的天然实验室.本文简要总结了描述α团簇的不同理论方法,尤其比较了这些不同方法对12C Hoyle态的最新研究结果,各种理论都支持Hoyle态是一个具有较大尺寸的团簇结构,但对α团簇在Hoyle态中的存在形式——比如α凝聚,α气体或是α晶体结构,目前还没有达成共识;进一步从实验角度介绍了α团簇衰变的高精度符合测量及转动态的集体激发.对α团簇结构尤其12C Hoyle态及16O类Hoyle态中α存在形式的确认需要深入理解这些团簇态的集体激发行为,任何实质性进展不仅高度依赖高精度实验数据,而且需要新的多体理论解释,而这其中需要合理考虑核子-核子、团簇-团簇关联及连续谱的影响. 展开更多
关键词 α团簇 α共轭核 hoyle 核合成 玻色-爱因斯坦凝聚
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Nonlocalized clustering and evolution of cluster structure in nuclei 被引量:2
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作者 Bo Zhou Yasuro Funaki +1 位作者 Hisashi Horiuchi Akihiro Tohsaki 《Frontiers of physics》 SCIE CSCD 2020年第1期71-134,共64页
We explain various facets of the THSR(Tohsaki-Horiuchi Schuck-Ropke)wave function.We first discuss the THSR,wave function as a wave function of cluster-gas state,since the THSR,wave function was originally introduced ... We explain various facets of the THSR(Tohsaki-Horiuchi Schuck-Ropke)wave function.We first discuss the THSR,wave function as a wave function of cluster-gas state,since the THSR,wave function was originally introduced to elucidate the 3a-condensate-like character of the Hoyle state(O2^+ state)of 12C.We briefly review the cluster-model studies of the Hoyle state in 1970’s in order to explain how there emerged the idea to assign the a condensate character to the Hoyle state.We then explain that the THSR wave function can describe very well also non-gaslike ordinary cluster states with spatial localization of clusters.This fact means that the dynamical motion of clusters is of nonlocalized nature just as in gas-like states of clusters and the localization of clusters is due to the inter-cluster Pauli principle which is against the close approach of two clusters.The nonlocalized cluster dynamics is formulated by the container model of cluster dynamics.The container model describes gas-like state and non-gaslike states as the solutions of the Hill Wheeler equation with respect to the size parameter of THSR wave function which is just the size parameter of the container.When we notice that fact that the THSR wave function with the smallest value of size parameter is equivalent to the shell-model wave function,we see that the container model describes the evolution of cluster structure from the ground state with shell-model structure up to the gas-like cluster state via ordinary non-gaslike cluster states.For the description of various cluster structure,more generation of THSR wave function have been introduced and we review some typical examples with their actual applications. 展开更多
关键词 hoyle state ALPHA CONDENSATION THSR wave function nonlocalized CLUSTERING CONTAINER model EVOLUTION of cluster structure
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Four α correlations in nuclear fragmentation: a game of resonances
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作者 M.Huang A.Bonasera +11 位作者 S.Zhang H.Zheng D.X.Wang J.C.Wang N.Song X.Tang L.Lu G.Zhang Z.Kohley M.R.D.Rodrigues Y.G.Ma S.J.Yennello 《Chinese Physics C》 SCIE CAS CSCD 2021年第2期406-413,共8页
Heavy ion collisions near the Fermi energy produce a‘freezout’region where fragments appear and later decay,emitting mainly neutrons,protons,alpha particles,and gamma rays.These decay products carry information abou... Heavy ion collisions near the Fermi energy produce a‘freezout’region where fragments appear and later decay,emitting mainly neutrons,protons,alpha particles,and gamma rays.These decay products carry information about the decaying nuclei.Fragmentation events may result in high yields of boson particles,especially alpha particles,and may carry important information about the nuclear Bose Einstein condensate(BEC).We study‘in medium’fourαcorrelations and link them to the‘fission’of 16O in two 8Be in the ground state or 12C*(Hoyle state)+α.Using novel techniques for the correlation functions,we confirm the resonance of 16O at 15.2 MeV excitation energy,and the possibility of a lower resonance,close to 14.72 MeV.The latter resonance is the result of allαparticles having 92 keV relative kinetic energies. 展开更多
关键词 4αresonance hoyle state Bose Einstein condensate heavy ion reactions
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