The glass-transition, crystallization and melting in GexSel-x (0 $ x $ 0.33) have been studied by Raman scattering. Raman spectra exhibit some anomalous changes at the glass transition. On the basis of these anomalous features which relate to the structural changes, we investigate a medium range structure in glassy and liquid GexSel-x· In the Ge compo sition range of 0.04 < x < 0.18, both GeSe2 and Se crystals are much more difficult to be obtained than in the other Ge composition.
用拉曼散射研究了GexSel-x (0 $ x $ 0.33)的玻璃化转变、结晶和熔化过程。拉曼光谱在玻璃化转变中表现出一些反常的变化。在这些与结构变化有关的异常特征的基础上，我们研究了玻璃态和液态gessel -x·的中范围结构。在0.04 < x < 0.18的Ge组成范围内，GeSe2和Se晶体比其他Ge组成更难获得。
{"title":"Structural Changes at Glass-Transition in GexSe1−x Studied by Raman Scattering","authors":"Yong Wang, O. Matsuda, Koichi Inoue, K. Murase","doi":"10.1143/PTPS.126.191","DOIUrl":"https://doi.org/10.1143/PTPS.126.191","url":null,"abstract":"The glass-transition, crystallization and melting in GexSel-x (0 $ x $ 0.33) have been studied by Raman scattering. Raman spectra exhibit some anomalous changes at the glass transition. On the basis of these anomalous features which relate to the structural changes, we investigate a medium range structure in glassy and liquid GexSel-x· In the Ge compo sition range of 0.04 < x < 0.18, both GeSe2 and Se crystals are much more difficult to be obtained than in the other Ge composition.","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":"126 1","pages":"191-194"},"PeriodicalIF":0.0,"publicationDate":"2013-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64740453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Broadband Light Scattering from Glass-Forming Propylene Glycol","authors":"A. Yoshihara, H. Sato, S. Kojima","doi":"10.1143/PTPS.126.423","DOIUrl":"https://doi.org/10.1143/PTPS.126.423","url":null,"abstract":"","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":"126 1","pages":"423-426"},"PeriodicalIF":0.0,"publicationDate":"2013-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64742940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Glasses and amorphous materials show, coexisting with the sound waves, a variety of low energy excitations: tunneling, quasi-localized vibrations and relaxations. The latter two are observed well into the liquid state. Using molecular dynamics both were shown to be centered, at low temperatures, typically on more than ten atoms or molecular units, which form chainlike structures. With increasing frequency the interaction of the quasi-localized modes with the sound waves and with each other increases, they de-localize. However, even at the so-called boson peak frequency, where the sound waves become over-damped due to the interaction, the vibrations can be decomposed into local and extended modes. Closely correlated with t.he local vibrations are the local relaxations, which can be envisaged as collective jumps of groups of atoms. With rising temperature both the total jump length and the number of atoms participating increases. In the melt when single jumps are no longer resolved one still observes a collective motion of chains of atoms.
{"title":"Low Energy Excitations in Glasses and Melts","authors":"H. Schober, C. Gaukel, C. Oligschleger","doi":"10.1143/PTPS.126.67","DOIUrl":"https://doi.org/10.1143/PTPS.126.67","url":null,"abstract":"Glasses and amorphous materials show, coexisting with the sound waves, a variety of low energy excitations: tunneling, quasi-localized vibrations and relaxations. The latter two are observed well into the liquid state. Using molecular dynamics both were shown to be centered, at low temperatures, typically on more than ten atoms or molecular units, which form chainlike structures. With increasing frequency the interaction of the quasi-localized modes with the sound waves and with each other increases, they de-localize. However, even at the so-called boson peak frequency, where the sound waves become over-damped due to the interaction, the vibrations can be decomposed into local and extended modes. Closely correlated with t.he local vibrations are the local relaxations, which can be envisaged as collective jumps of groups of atoms. With rising temperature both the total jump length and the number of atoms participating increases. In the melt when single jumps are no longer resolved one still observes a collective motion of chains of atoms.","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":"126 1","pages":"67-74"},"PeriodicalIF":0.0,"publicationDate":"2013-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64743512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The spin-orbit interactions in the quark cluster models are reviewed in this article. The observed spin-orbit force between two nucleons is strong, while that in the excited baryons or in the ΛN interaction is small. We try to sort out whether the quark cluster model can produce a spin-orbit force which explains these features simultaneously. Various works which include the spin-orbit force with different origins such as gluons, mesons, or coupling to other channels are compared to each other. The roles of the symmetric and anti-symmetric spinorbit forces in the NN scattering phase shifts and in the Y N low-energy cross sections and the phase shifts are investigated.
{"title":"Spin-Orbit Interactions between Two Baryons","authors":"S. Takeuchi, O. Morimatsu, Y. Tani, M. Oka","doi":"10.1143/PTPS.137.83","DOIUrl":"https://doi.org/10.1143/PTPS.137.83","url":null,"abstract":"The spin-orbit interactions in the quark cluster models are reviewed in this article. The observed spin-orbit force between two nucleons is strong, while that in the excited baryons or in the ΛN interaction is small. We try to sort out whether the quark cluster model can produce a spin-orbit force which explains these features simultaneously. Various works which include the spin-orbit force with different origins such as gluons, mesons, or coupling to other channels are compared to each other. The roles of the symmetric and anti-symmetric spinorbit forces in the NN scattering phase shifts and in the Y N low-energy cross sections and the phase shifts are investigated.","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":"137 1","pages":"83-120"},"PeriodicalIF":0.0,"publicationDate":"2013-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64752655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Test for Scaling Rule in Multi-Meson Production at Cosmic Ray Energies around 100 TeV","authors":"T. Tabuki","doi":"10.1143/PTPS.76.40","DOIUrl":"https://doi.org/10.1143/PTPS.76.40","url":null,"abstract":"","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":"76 1","pages":"40-50"},"PeriodicalIF":0.0,"publicationDate":"2013-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64900309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The application of the quark cluster model to the nucleon-nucleon interaction is reviewed. A brief discussion is given on the strongly overlapping region for two nucleons where quarks are expected to play important roles. After a short explanation of the quark cluster model, the short-range repulsion, the medium range attraction, the spin-orbit force and the short range tensor force are discussed both in the conventional two-body model of confinement and the recently proposed flip-flop model.
{"title":"Nuclear Force in the Quark Cluster Model","authors":"K. Yazaki","doi":"10.1143/PTPS.91.146","DOIUrl":"https://doi.org/10.1143/PTPS.91.146","url":null,"abstract":"The application of the quark cluster model to the nucleon-nucleon interaction is reviewed. A brief discussion is given on the strongly overlapping region for two nucleons where quarks are expected to play important roles. After a short explanation of the quark cluster model, the short-range repulsion, the medium range attraction, the spin-orbit force and the short range tensor force are discussed both in the conventional two-body model of confinement and the recently proposed flip-flop model.","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":"91 1","pages":"146-159"},"PeriodicalIF":0.0,"publicationDate":"2013-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64913358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We start from one gluon exchange mechanism to derive a quark-antiquark pair creation transition potential, and study some strong interaction processes, such as baryon-meson vertices, NN interactions and meson decays, by using this transition potential. The coupling constants of the vertices are consistent with the experimental data, except for the case of JC meson, in which the theoretical results are in general smaller than the measured values. The equivalent meson exchange NN interactions have the same behavior of the conventional OBEP for the medium and long range parts.
{"title":"One Gluon Exchange Quark-Antiquark Pair Creation Model*>","authors":"Z. Zhang, You-wen Yu","doi":"10.1143/PTPS.91.193","DOIUrl":"https://doi.org/10.1143/PTPS.91.193","url":null,"abstract":"We start from one gluon exchange mechanism to derive a quark-antiquark pair creation transition potential, and study some strong interaction processes, such as baryon-meson vertices, NN interactions and meson decays, by using this transition potential. The coupling constants of the vertices are consistent with the experimental data, except for the case of JC meson, in which the theoretical results are in general smaller than the measured values. The equivalent meson exchange NN interactions have the same behavior of the conventional OBEP for the medium and long range parts.","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":"91 1","pages":"193-203"},"PeriodicalIF":0.0,"publicationDate":"2013-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64913385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Relativistic Descriptions of Nuclear Magnetic Moments","authors":"Jixuan Wei, Jian Li, J. Meng","doi":"10.1143/PTPS.196.400","DOIUrl":"https://doi.org/10.1143/PTPS.196.400","url":null,"abstract":"","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":"196 1","pages":"400-406"},"PeriodicalIF":0.0,"publicationDate":"2013-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTPS.196.400","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64871956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Exact results are obtained on the localization of eigenstates in one dimensional infinite disordered systems with diagonal and off-diagonal random nesses. A Furstenberg-type theorem is established for the product of matrices associated with a multi-Markov-chain. As a result, Matsuda and Ishii's theory is generalized to examine the systems with both randomnesses. Harmonic chains, tightly binding electronic systems and Heisenberg-Mattis model are considered as typical examples.
{"title":"Localization of Eigenstates in One-Dimensional Disordered Systems","authors":"M. Goda","doi":"10.1143/PTPS.72.232","DOIUrl":"https://doi.org/10.1143/PTPS.72.232","url":null,"abstract":"Exact results are obtained on the localization of eigenstates in one dimensional infinite disordered systems with diagonal and off-diagonal random nesses. A Furstenberg-type theorem is established for the product of matrices associated with a multi-Markov-chain. As a result, Matsuda and Ishii's theory is generalized to examine the systems with both randomnesses. Harmonic chains, tightly binding electronic systems and Heisenberg-Mattis model are considered as typical examples.","PeriodicalId":20614,"journal":{"name":"Progress of Theoretical Physics Supplement","volume":"72 1","pages":"232-246"},"PeriodicalIF":0.0,"publicationDate":"2013-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTPS.72.232","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64898783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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