scholarly journals Self-consistent calculation of nuclear photoabsorption cross sections: Finite amplitude method with Skyrme functionals in the three-dimensional real space

2009 ◽  
Vol 80 (4) ◽  
Author(s):  
Tsunenori Inakura ◽  
Takashi Nakatsukasa ◽  
Kazuhiro Yabana
Keyword(s):  
Cross Sections ◽  
Three Dimensional ◽  
Real Space ◽  
Finite Amplitude ◽  
Consistent Calculation ◽  
Self Consistent

From vesicles to micelles: microphase separation of amphiphilic dendrimer copolymers in a selective solvent

Soft Matter ◽  
2015 ◽  
Vol 11 (45) ◽  
pp. 8801-8811 ◽  
Author(s):  
Bo Lin ◽  
Lan Liu ◽  
Shijie Zhang ◽  
Junzuo Huang ◽  
Fuan He ◽  
...  
Keyword(s):  
Microphase Separation ◽  
Three Dimensional ◽  
Real Space ◽  
Excluded Volume ◽  
Selective Solvent ◽  
Excluded Volume Effects ◽  
Consistent Field ◽  
Self Consistent ◽  
Self Consistent Field ◽  
Self Consistent Field Theory

The microphase separation of amphiphilic dendrimer copolymers in a selective solvent with different excluded volume effects (αS) is investigated using three-dimensional real space self-consistent field theory.

RESPONSE FUNCTIONS IN THE CONTINUUM OF DEFORMED NUCLEI STUDIED WITH THE TIME-DEPENDENT DENSITY-FUNCTIONAL CALCULATIONS

2009 ◽  
Vol 18 (10) ◽  
pp. 2088-2092
Author(s):  
TSUNENORI INAKURA ◽  
TAKASHI NAKATSUKASA ◽  
KAZUHIRO YABANA
Keyword(s):  
Density Functional ◽  
Three Dimensional ◽  
High Energy ◽  
Finite Amplitude ◽  
Time Dependent ◽  
Response Functions ◽  
Giant Resonances ◽  
Self Consistent ◽  
Dipole Response ◽  
Dependent Density

Electric dipole response functions of even-even nuclei are calculated with the time-dependent density-functional theory in perturbative regime. For an easy implementation of the fully self-consistent calculation, the finite amplitude method which we have proposed recently is employed. This is the first fully self-consistent RPA calculation in the three-dimensional mesh representation, including high-energy regions of giant resonances.

SYSTEMATIC CALCULATION OF ELECTRIC DIPOLE STRENGTH WITH SKYRME-HF PLUS RPA

2010 ◽  
Vol 25 (21n23) ◽  
pp. 1931-1934 ◽  
Author(s):  
TSUNENORI INAKURA ◽  
TAKASHI NAKATSUKASA ◽  
KAZUHIRO YABANA
Keyword(s):  
Angular Momentum ◽  
Electric Dipole ◽  
Finite Amplitude ◽  
Dipole Strength ◽  
Systematic Comparison ◽  
Systematic Calculation ◽  
Hartree Fock ◽  
Consistent Calculation ◽  
Self Consistent

We show some results of systematic calculation on electric dipole responses of even-even nuclei, employing a Hartree-Fock plus RPA approach. For an easy implementation of the fully self-consistent calculation, a finite amplitude method which we proposed recently is employed. We show a systematic comparison of calculated peak energies of giant dipole resonances and an importance of low-angular momentum orbit for emergence of pygmy dipole resonances.

An Image Reconstruction System Applied to High Voltage Microscopy

1975 ◽  
Vol 33 ◽  
pp. 292-293
Author(s):  
D. E. Johnson
Keyword(s):  
High Voltage ◽  
Prior Information ◽  
Block Diagram ◽  
Three Dimensional ◽  
Real Space ◽  
Two Dimensional ◽  
Efficient Manner ◽  
Fourier Methods ◽  
Tilt Series ◽  
Methods Of Reconstruction

Increased specimen penetration; the principle advantage of high voltage microscopy, is accompanied by an increased need to utilize information on three dimensional specimen structure available in the form of two dimensional projections (i.e. micrographs). We are engaged in a program to develop methods which allow the maximum use of information contained in a through tilt series of micrographs to determine three dimensional speciman structure.In general, we are dealing with structures lacking in symmetry and with projections available from only a limited span of angles (±60°). For these reasons, we must make maximum use of any prior information available about the specimen. To do this in the most efficient manner, we have concentrated on iterative, real space methods rather than Fourier methods of reconstruction. The particular iterative algorithm we have developed is given in detail in ref. 3. A block diagram of the complete reconstruction system is shown in fig. 1.

Geological Field Sketches and Illustrations

2019 ◽  
Author(s):  
Matthew J. Genge
Keyword(s):  
Cross Sections ◽  
Earth Science ◽  
Three Dimensional ◽  
Worked Examples ◽  
Scientific Publications ◽  
Thin Sections ◽  
Geological Features ◽  
Different Types ◽  
The Subject

Drawings, illustrations, and field sketches play an important role in Earth Science since they are used to record field observations, develop interpretations, and communicate results in reports and scientific publications. Drawing geology in the field furthermore facilitates observation and maximizes the value of fieldwork. Every geologist, whether a student, academic, professional, or amateur enthusiast, will benefit from the ability to draw geological features accurately. This book describes how and what to draw in geology. Essential drawing techniques, together with practical advice in creating high quality diagrams, are described the opening chapters. How to draw different types of geology, including faults, folds, metamorphic rocks, sedimentary rocks, igneous rocks, and fossils, are the subjects of separate chapters, and include descriptions of what are the important features to draw and describe. Different types of sketch, such as drawings of three-dimensional outcrops, landscapes, thin-sections, and hand-specimens of rocks, crystals, and minerals, are discussed. The methods used to create technical diagrams such as geological maps and cross-sections are also covered. Finally, modern techniques in the acquisition and recording of field data, including photogrammetry and aerial surveys, and digital methods of illustration, are the subject of the final chapter of the book. Throughout, worked examples of field sketches and illustrations are provided as well as descriptions of the common mistakes to be avoided.

scholarly journals Vortex states in an acoustic Weyl crystal with a topological lattice defect

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Qiang Wang ◽  
Yong Ge ◽  
Hong-xiang Sun ◽  
Haoran Xue ◽  
Ding Jia ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Lattice Defect ◽  
Three Dimensional ◽  
Surface States ◽  
Real Space ◽  
Lattice Defects ◽  
One Dimensional ◽  
Topological Features ◽  
Topological Lattice

AbstractCrystalline materials can host topological lattice defects that are robust against local deformations, and such defects can interact in interesting ways with the topological features of the underlying band structure. We design and implement a three dimensional acoustic Weyl metamaterial hosting robust modes bound to a one-dimensional topological lattice defect. The modes are related to topological features of the bulk bands, and carry nonzero orbital angular momentum locked to the direction of propagation. They span a range of axial wavenumbers defined by the projections of two bulk Weyl points to a one-dimensional subspace, in a manner analogous to the formation of Fermi arc surface states. We use acoustic experiments to probe their dispersion relation, orbital angular momentum locked waveguiding, and ability to emit acoustic vortices into free space. These results point to new possibilities for creating and exploiting topological modes in three-dimensional structures through the interplay between band topology in momentum space and topological lattice defects in real space.

Sign in / Sign up

Export Citation Format

Share Document