{"title":"Stochasticity and Symmetry of the Standard Map","authors":"Y. Ichikawa, T. Kamimura, T. Hatori, S. Kim","doi":"10.1143/PTPS.98.1","DOIUrl":"https://doi.org/10.1143/PTPS.98.1","url":null,"abstract":"","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"4 1","pages":"1-35"},"PeriodicalIF":0.0,"publicationDate":"1989-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86086133","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 eikonal approximation (EA) and eikonal-related approximations have been systematically discussed for atomic collision problems by several authors. i ) In fact this method is equivalent to an infinite order perturbation with the perturbation series summed up in a particular way so that the straight path integral of interaction potential appears as a phase of the exponential function. Such a term can be used to describe some kind of distortion of the incident or scattered projectile motion due to the interaction potential between the projectile and the target. Because of the additivity of the phase integral of interactions, the phase-distortion is possessed of intuitive clarity for describing the multiple scattering from many electron targets. It is recognized that the dynamical picture prQvided by the eikonal approximation is a multiple scattering one in the essential spirit from the methodological point 6f view, although it includes some ambiguity in the procedure of a linearization over the related Hamiltonian or the Green function. 2 ) In practical applications the eikonal and eikonal-related approximations have been known to work well for atomic as well as nuclear scattering in intermediate and high energy regions. l
{"title":"Eikonal Approximation in Partial Wave Version","authors":"W. Qian, H. Narumi","doi":"10.1143/PTP.81.1079","DOIUrl":"https://doi.org/10.1143/PTP.81.1079","url":null,"abstract":"The eikonal approximation (EA) and eikonal-related approximations have been systematically discussed for atomic collision problems by several authors. i ) In fact this method is equivalent to an infinite order perturbation with the perturbation series summed up in a particular way so that the straight path integral of interaction potential appears as a phase of the exponential function. Such a term can be used to describe some kind of distortion of the incident or scattered projectile motion due to the interaction potential between the projectile and the target. Because of the additivity of the phase integral of interactions, the phase-distortion is possessed of intuitive clarity for describing the multiple scattering from many electron targets. It is recognized that the dynamical picture prQvided by the eikonal approximation is a multiple scattering one in the essential spirit from the methodological point 6f view, although it includes some ambiguity in the procedure of a linearization over the related Hamiltonian or the Green function. 2 ) In practical applications the eikonal and eikonal-related approximations have been known to work well for atomic as well as nuclear scattering in intermediate and high energy regions. l","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"7 1","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"1989-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86639911","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 plasma–sheath equation for a collisionless plasma with a finite‐temperature particle source in a nonuniform open magnetic field is formulated. The plasma equation is solved analytically and the plasma–sheath equation is also solved numerically for various profiles of the magnetic field. The potential formed in the plasma depends considerably on the profile of the magnetic field strength; the potential drop in the presheath increases and the ion distribution function widens as the magnetic field strength decreases in the direction of the plasma flow. Application of the generalized Bohm criterion shows that the solution of the plasma equation always satisfies this criterion when the magnetic field monotonically decreases in the outside direction. The potential drop in the sheath is almost independent of the magnetic field profile, and the ion energy at a wall for a decreasing magnetic field is slightly large when compared with that for a uniform magnetic field.
{"title":"Sheath and Presheath in a Collisionless Open Field Plasma","authors":"Kunihiro Sato, F. Miyawaki, W. Fukui","doi":"10.1063/1.859137","DOIUrl":"https://doi.org/10.1063/1.859137","url":null,"abstract":"The plasma–sheath equation for a collisionless plasma with a finite‐temperature particle source in a nonuniform open magnetic field is formulated. The plasma equation is solved analytically and the plasma–sheath equation is also solved numerically for various profiles of the magnetic field. The potential formed in the plasma depends considerably on the profile of the magnetic field strength; the potential drop in the presheath increases and the ion distribution function widens as the magnetic field strength decreases in the direction of the plasma flow. Application of the generalized Bohm criterion shows that the solution of the plasma equation always satisfies this criterion when the magnetic field monotonically decreases in the outside direction. The potential drop in the sheath is almost independent of the magnetic field profile, and the ion energy at a wall for a decreasing magnetic field is slightly large when compared with that for a uniform magnetic field.","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"49 1","pages":"1-32"},"PeriodicalIF":0.0,"publicationDate":"1988-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85801539","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}
Pub Date : 1988-07-01DOI: 10.1016/0148-9062(89)91229-1
C. Lee, H. Poulos
{"title":"INFLUENCE OF EXCESS PORE PRESSURES ON AXIAL OFFSHORE PILE RESPONSE","authors":"C. Lee, H. Poulos","doi":"10.1016/0148-9062(89)91229-1","DOIUrl":"https://doi.org/10.1016/0148-9062(89)91229-1","url":null,"abstract":"","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73858313","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}
Pub Date : 1988-07-01DOI: 10.1061/(ASCE)0733-9410(1989)115:6(836)
H. Poulos
This paper develops an analysis for the behaviour of a single pile or symmetrical pile group in sand under cyclic axial loading. The analysis allows consideration of the effects of degradation of skin friction, base resistance and soil modulus, the influence of loading rate, and the accumulation of permanent displacements. Laboratory data for skin friction degradation are presented and it is shown that the amount of degradation due to cyclic loading depends on the cyclic displacement, the number of cycles, the soil type, and the type of pile. Theoretical solutions for a hypothetical pile and a recent field test emphasize the importance of determining whether the degradation of skin friction depends on the absolute cyclic displacement or the cyclic displacement relative to the pile diameter (a).
{"title":"CYCLIC AXIAL LOADING ANALYSIS OF PILES IN SAND","authors":"H. Poulos","doi":"10.1061/(ASCE)0733-9410(1989)115:6(836)","DOIUrl":"https://doi.org/10.1061/(ASCE)0733-9410(1989)115:6(836)","url":null,"abstract":"This paper develops an analysis for the behaviour of a single pile or symmetrical pile group in sand under cyclic axial loading. The analysis allows consideration of the effects of degradation of skin friction, base resistance and soil modulus, the influence of loading rate, and the accumulation of permanent displacements. Laboratory data for skin friction degradation are presented and it is shown that the amount of degradation due to cyclic loading depends on the cyclic displacement, the number of cycles, the soil type, and the type of pile. Theoretical solutions for a hypothetical pile and a recent field test emphasize the importance of determining whether the degradation of skin friction depends on the absolute cyclic displacement or the cyclic displacement relative to the pile diameter (a).","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85029214","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}
I. Katanuma, Y. Kiwamoto, K. Ishii, K. Yatsu, S. Miyoshi
Neoclassical resonant‐plateau transport in a minimum‐B anchored tandem mirror is calculated in an experimentally observed case where a flux tube of equipotential contours is not circular at the central cell.
{"title":"Neoclassical resonant-plateau transport in the noncircular equipotential surface of a tandem mirror","authors":"I. Katanuma, Y. Kiwamoto, K. Ishii, K. Yatsu, S. Miyoshi","doi":"10.1063/1.858975","DOIUrl":"https://doi.org/10.1063/1.858975","url":null,"abstract":"Neoclassical resonant‐plateau transport in a minimum‐B anchored tandem mirror is calculated in an experimentally observed case where a flux tube of equipotential contours is not circular at the central cell.","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"5 1","pages":"1-14"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81801707","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}
Pub Date : 1988-04-01DOI: 10.1016/0148-9062(89)91227-8
H. Poulos, K. F. Chan
{"title":"TESTS ON MODEL INSTRUMENTED PILES IN CALCAREOUS SOIL","authors":"H. Poulos, K. F. Chan","doi":"10.1016/0148-9062(89)91227-8","DOIUrl":"https://doi.org/10.1016/0148-9062(89)91227-8","url":null,"abstract":"","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1988-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83655445","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}
Pub Date : 1988-02-01DOI: 10.1017/S0263034600006066
G. Velarde, J. Aragonés, J. Honrubia, J. Martínez-Val, E. Mínguez, J. Ocaña, J. Perlado
{"title":"SIMULATION CODE FOR ICF INCLUDING RADIATIVE ENERGY TRANSFER","authors":"G. Velarde, J. Aragonés, J. Honrubia, J. Martínez-Val, E. Mínguez, J. Ocaña, J. Perlado","doi":"10.1017/S0263034600006066","DOIUrl":"https://doi.org/10.1017/S0263034600006066","url":null,"abstract":"","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"7 1","pages":"102-112"},"PeriodicalIF":0.0,"publicationDate":"1988-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82875901","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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