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Renormalization group evaluation of the second virial coefficient of polydisperse polymer solutions 多分散聚合物溶液二次维里系数的重整化基团评价
Journal De Physique Lettres Pub Date : 1985-12-01 DOI: 10.1051/JPHYSLET:0198500460230111500
S. Stepanow, E. Straube
{"title":"Renormalization group evaluation of the second virial coefficient of polydisperse polymer solutions","authors":"S. Stepanow, E. Straube","doi":"10.1051/JPHYSLET:0198500460230111500","DOIUrl":"https://doi.org/10.1051/JPHYSLET:0198500460230111500","url":null,"abstract":"2014 The second virial coefficient A2 for a mixture of two monodisperse polymers is studied by means of the renormalization group. It is found that the cross-term A12 has a finite limit if the segment number of one of the polymers tends to infinity. Such behaviour predicts a maximum of A2 in dependence on the relative composition of the polymers. The maximum resulting from our firstorder RG-calculation lies outside the molecular weight ratio investigated so far experimentally. J. Physique Lett. 46 (1985) L-1115 L-1122 ler DECEMBRE 1985, Classification Physics Abstracts 36.20 61.40K 82.70","PeriodicalId":14822,"journal":{"name":"Journal De Physique Lettres","volume":"15 1","pages":"1115-1122"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81904557","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}
引用次数: 1
Time scaling of the ageing process in spin-glasses : a study in CsNiFeF6 自旋玻璃老化过程的时间尺度:CsNiFeF6的研究
Journal De Physique Lettres Pub Date : 1985-12-01 DOI: 10.1051/JPHYSLET:0198500460230110100
M. Ocio, M. Alba, J. Hammann
{"title":"Time scaling of the ageing process in spin-glasses : a study in CsNiFeF6","authors":"M. Ocio, M. Alba, J. Hammann","doi":"10.1051/JPHYSLET:0198500460230110100","DOIUrl":"https://doi.org/10.1051/JPHYSLET:0198500460230110100","url":null,"abstract":"The ageing properties of the time decay of the thermoremanent magnetization (TRM) in CsNiFeF 6 are analysed on the basis of a phenomenological theory of times scaling as yet used in the case of the mechanical properties of glassy polymers. We find that the time decay law takes the form of the product of a stretched exponential by a power law Analyse des proprietes de vieillissement de la decroissance de l'aimantation thermoremanente en fonction du temps a partir d'une theorie phenomenologique d'echelle, deja utilisee pour les proprietes mecaniques des polymeres vitraux","PeriodicalId":14822,"journal":{"name":"Journal De Physique Lettres","volume":"9 1","pages":"1101-1107"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81769719","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}
引用次数: 29
The electrostatic energy of a lattice of point charges 点电荷晶格的静电能
Journal De Physique Lettres Pub Date : 1985-12-01 DOI: 10.1051/JPHYSLET:0198500460240114300
J. Olives
{"title":"The electrostatic energy of a lattice of point charges","authors":"J. Olives","doi":"10.1051/JPHYSLET:0198500460240114300","DOIUrl":"https://doi.org/10.1051/JPHYSLET:0198500460240114300","url":null,"abstract":"The limit electrostatic energy per cell E of ionic lattice of point charges is defined as the limit value of the energy of a finite crystal divided by its number of cells (when this number tends towards+∞). The explicit value of E is calculated and related to the Ewald energy. This energy E depends on the sequence of the increasing finite crystals (more precisely, on the sequence of the increasing finite sets of ions). In other words, and briefly: E is a volumic energy which depends on the surface L'energie electrostatique limite par paille d'un reseau ionique est definie comme la valeur limite de l'energie d'un cristal fini divisee par son nombre de mailles. Calcul de sa valeur que l'on relie a l'energie d'Ewald","PeriodicalId":14822,"journal":{"name":"Journal De Physique Lettres","volume":"43 1","pages":"1143-1149"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86649660","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}
引用次数: 3
Multiple scale structure of non wetting fluid invasion fronts in 3D model porous media 三维模型多孔介质中非润湿流体侵入前沿的多尺度结构
Journal De Physique Lettres Pub Date : 1985-12-01 DOI: 10.1051/JPHYSLET:0198500460240116300
É. Clément, C. Baudet, J. Hulin
{"title":"Multiple scale structure of non wetting fluid invasion fronts in 3D model porous media","authors":"É. Clément, C. Baudet, J. Hulin","doi":"10.1051/JPHYSLET:0198500460240116300","DOIUrl":"https://doi.org/10.1051/JPHYSLET:0198500460240116300","url":null,"abstract":"We report experimental measurements on the structure of invasion fronts obtained by slow vertical injection of liquid, non wetting, Wood metal into non consolidated crushed glass. The geometry of plane cuts of the invasion front both parallel and perpendicular to the flow direction is analysed. The structure of perpendicular cuts is self similar in a length scale range of 1 to 20 with a fractal dimension 1.65. Saturation profiles measured from parallel cuts are in qualitative agreement with invasion percolation models. Possible theoretical predictions for the geometry of horizontal cuts are discussed Mesures de la structure de fronts d'invasion obtenus par une injection verticale lente de metal de Wood non mouillant dans un massif de verre pile non consolide. On analyse la geometrie de coupes du front d'invasion perpendiculaires et paralleles a la direction d'ecoulement. Comparaison des profils des coupes paralleles avec les modeles de percolation","PeriodicalId":14822,"journal":{"name":"Journal De Physique Lettres","volume":"39 1","pages":"1163-1171"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90285290","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}
引用次数: 18
A new way to include the grain shape in texture simulations with the Taylor model 利用Taylor模型在纹理模拟中加入纹理形状的新方法
Journal De Physique Lettres Pub Date : 1985-12-01 DOI: 10.1051/JPHYSLET:0198500460230110900
H. Bunge, F. Wagner, P. Houtte
{"title":"A new way to include the grain shape in texture simulations with the Taylor model","authors":"H. Bunge, F. Wagner, P. Houtte","doi":"10.1051/JPHYSLET:0198500460230110900","DOIUrl":"https://doi.org/10.1051/JPHYSLET:0198500460230110900","url":null,"abstract":"The use of the Hall-Petch relation in texture simulations with the Taylor-Bishop-Hill model is proposed as a mean to take into account grain shape effect. The results are compared with those obtained with the usual and relaxed constraint Taylor model for a simple texture and the consequences for the anisotropy coefficient are investigated On propose d'utiliser la relation de Hall-Petch dans les simulations de texture a l'aide du modele de Taylor-Bishop-Hill pour prendre en compte la forme des grains. Comparaison des resultats avec ceux du modele de Taylor classique ou relaxe dans le cas d'une texture simple; consequences pour le coefficient d'anisotropie","PeriodicalId":14822,"journal":{"name":"Journal De Physique Lettres","volume":"111 1","pages":"1109-1113"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73921932","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}
引用次数: 29
High resolution measurement of fragment mass-charge-kinetic energy correlations in the cold fragmentation region of thermal fission of 235U 235U热裂变冷破碎区碎片质量-电荷-动能相关的高分辨率测量
Journal De Physique Lettres Pub Date : 1985-12-01 DOI: 10.1051/JPHYSLET:0198500460230109500
C. Signarbieux, G. Simon, J. Trochon, F. Brisard
{"title":"High resolution measurement of fragment mass-charge-kinetic energy correlations in the cold fragmentation region of thermal fission of 235U","authors":"C. Signarbieux, G. Simon, J. Trochon, F. Brisard","doi":"10.1051/JPHYSLET:0198500460230109500","DOIUrl":"https://doi.org/10.1051/JPHYSLET:0198500460230109500","url":null,"abstract":"; fragments keV, la séparation des masses est et, séparation des charges est Une discussion de l’évolution de la distribution des charges en fonction de cinétique totale des fragments pour de masses 132/104. Abstract. 2014 The performance of a back-to-back gridded ionization chamber containing an extremely thin fissile target has been investigated for studying the cold fragmentation phenomenon : primary fragment kinetic energy is measured with a resolution much better than 300 keV; mass separation is total and for each mass, a good charge separation is obtained. The evolution of the charge distribution as a function of the fragments’ total kinetic energy is discussed for the mass-ratio 132/104.","PeriodicalId":14822,"journal":{"name":"Journal De Physique Lettres","volume":"41 1","pages":"1095-1099"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91319338","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}
引用次数: 8
Helimagnetic structure in diluted Y-Gd alloys 稀释Y-Gd合金的磁结构
Journal De Physique Lettres Pub Date : 1985-12-01 DOI: 10.1051/JPHYSLET:0198500460230113900
P. Brown, R. Caudron, A. Fert, D. Givord, P. Pureur
{"title":"Helimagnetic structure in diluted Y-Gd alloys","authors":"P. Brown, R. Caudron, A. Fert, D. Givord, P. Pureur","doi":"10.1051/JPHYSLET:0198500460230113900","DOIUrl":"https://doi.org/10.1051/JPHYSLET:0198500460230113900","url":null,"abstract":"Neutron scattering studies on Y-Gd 2 and 3 at. % single crystals show a helimagnetic ordering to occur below Neel temperatures of 7 and 12 K respectively. The same value of the propagation vector [0, 0, 0.28 c*] is obtained for both samples. The Gd moments lie in the basal plane of the hexagonal structure. No contribution from the conduction electrons to the magnetic amplitudes is evidenced in addition to the 4f contribution. The Gd moment at low temperature is about 7 μg. The temperature dependence of the magnetic satellite intensity follows that predicted by a Brillouin function L'etude par diffraction de neutrons de Y-2% Gd et Y-3% Gd monocristallins revele un ordre helimagnetique au-dessous du point de Neel. On obtient une meme valeur du vecteur de propagation pour les deux echantillons. Les moments de Gd sont dans le plan de base de la structure hexagonale. Aucune contribution des electrons de conduction aux amplitudes magnetiques n'apparait superposee a la contribution 4f","PeriodicalId":14822,"journal":{"name":"Journal De Physique Lettres","volume":"1 1","pages":"1139-1141"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87610762","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}
引用次数: 9
Configuration space analysis for fully frustrated vector spins 完全受挫矢量自旋的构形空间分析
Journal De Physique Lettres Pub Date : 1985-12-01 DOI: 10.1051/JPHYSLET:0198500460230108700
P. Lallemand, H. Diep, A. Ghazali, G. Toulouse
{"title":"Configuration space analysis for fully frustrated vector spins","authors":"P. Lallemand, H. Diep, A. Ghazali, G. Toulouse","doi":"10.1051/JPHYSLET:0198500460230108700","DOIUrl":"https://doi.org/10.1051/JPHYSLET:0198500460230108700","url":null,"abstract":"Classical vector spins, on the sites of a three-dimensional simple cubic lattice, interacting via a periodic fully frustrated array of exchange interactions, may exhibit an interesting manifold of ground state configurations. In particular, for Heisenberg spins, the manifold has dimension 5, with two continuous degeneracy parameters, in addition to global rotation angles. A configuration space analysis, including pair and triangle overlap statistics, has been performed for this test model Des spins vectoriels classiques sur les sites d'un reseau cubique simple 3D, avec une distribution periodique completement frustree d'interaction d'echange, peuvent posseder une interessante variete de configuration de base. Pour des spins de Heisenberg, la variete a la dimension 5, avec deux parametres de degenerescence continus, en plus des angles de rotation globale. Analyse d'espace de configurations en incluant l'etude statistique des recouvrements pour les paires et les triangles","PeriodicalId":14822,"journal":{"name":"Journal De Physique Lettres","volume":"50 3 1","pages":"1087-1093"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77329089","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}
引用次数: 10
AC electric field induced flow and helix unwinding in focal conic texture of smectic C* liquid crystal 近晶C*液晶焦锥织构中交流电场诱导的流动和螺旋解绕
Journal De Physique Lettres Pub Date : 1985-12-01 DOI: 10.1051/JPHYSLET:0198500460240117700
B. Labroo, V. Razdan, D. Parmar, G. Durand
{"title":"AC electric field induced flow and helix unwinding in focal conic texture of smectic C* liquid crystal","authors":"B. Labroo, V. Razdan, D. Parmar, G. Durand","doi":"10.1051/JPHYSLET:0198500460240117700","DOIUrl":"https://doi.org/10.1051/JPHYSLET:0198500460240117700","url":null,"abstract":"A thin (∼10 μm) focal conic texture of DOBAMBC in its SmC * phase is submitted to an AC electric field. Above a field threshold, a DC plug flow of the texture normal to the layers is observed. It always originates from the focus of the ellipses towards their centre and extends to the entire focal domain. At higher field, the associated viscous shear unwinds the helical texture. The flow thresholds is explained by the build up at the focus of a DC electric pressure, from the action of the AC field on AC space charges, generated by conductivity anisotropy Etude sur le DOBAMBC. Observation d'un ecoulement permanent bouchon au-dela d'un certain seuil","PeriodicalId":14822,"journal":{"name":"Journal De Physique Lettres","volume":"242 ","pages":"1177-1181"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73074966","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}
引用次数: 5
On the effect of small ions in the dynamics of polyelectrolyte solutions 小离子对聚电解质溶液动力学的影响
Journal De Physique Lettres Pub Date : 1985-12-01 DOI: 10.1051/JPHYSLET:0198500460240118300
L. Belloni, M. Drifford
{"title":"On the effect of small ions in the dynamics of polyelectrolyte solutions","authors":"L. Belloni, M. Drifford","doi":"10.1051/JPHYSLET:0198500460240118300","DOIUrl":"https://doi.org/10.1051/JPHYSLET:0198500460240118300","url":null,"abstract":"Formules exprimant le coefficient de diffusion mutuelle des polyions en fonction des concentrations de polyelectrolyte et de sel ajoute","PeriodicalId":14822,"journal":{"name":"Journal De Physique Lettres","volume":"50 1","pages":"1183-1189"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80821584","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}
引用次数: 23
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