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Science Letters:A new coding scheme in coded ultrasound using staggering repetition interval

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第8期10卷 1213-1216页

作者： Cheng JIN Si-ping CHEN Zheng-di QIN School of Biomedical Engineering and Instrument Science Zhejiang University Hangzhou 310027 China School of Medicine Shenzhen University Shenzhen 518060 China Nokia Corporation Tampere 33100 Finland

The increase of frame rate,though with the potential in a coded ultrasound system,is generally concomitant with the simultaneous transmission of a number of apertures,and in consequence leads to increased cross-talks between different *** view of this,a new coding scheme using staggering repetition interval was *** transmitting signals were constructed by repeating the two(or more) modulated codes using staggering repetition interval,and then allocated to and transmitted simultaneously among different *** decoding process was based on the subsection-matched filter under the assistance of different matched filters for different *** last the outputs of subsection-matched filtering were added *** changed the positions of cross-correlation(CC) peaks from coinciding,which resulted in an effective reduction of *** theoretical analysis and simulations showed that,the coding scheme can be used to reduce cross-talk,and a good cross-talk reduction will be achieved if the staggering delay is kept in an appropriate range.

关键词： Coded ultrasound Frame rate Cross-correlation (CC) staggering Ultrasonic imaging

Energy staggering in Ground Bands of ^(232)Th and ^(236,238)U Nuclei Using the Interacting Vector Boson Model

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Communications in Theoretical Physics 2015年第7期64卷 90-94页

作者： A.M.Khalaf M.M.Sirag M.Kotb Physics Department Faculty of Science Al-Azhar University Physics Department Faculty of Girls Ain Shams University

The△I = 2 and △I = 4 staggering parameters of transition energies Eγfor normally deformed positive parity ground bands in232 Th and236,238 U nuclei are studied in framework of the symplectic extension of the interacting vector boson model. The model parameters are obtained from the fitting procedure between the calculated excitation energies and the corresponding experimental ones. The staggering parameters represent the finite difference approximations to higher order derivatives dnEγ/d Inof the γ-ray transition energies in a△I = 2 and △I = 4 bands, which yielding multipoint formulae. The first order derivative(two-point formula) provides us with information about the dynamical moment of inertia. The staggering oscillation for the fourth order derivative(five-point formula) is about 0.5 Ke V and is even larger than that in superdeformed bands. The quite similarity in dynamical moments of inertia of the isotopes236,238 U up to high spin states indicate that the phenomenon of identical bands is not restricted to superdeformed bands.

关键词： staggering interacting vector Boson model moment o

原子核能谱的staggering现象与四极相互作用

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高能物理与核物理 1991年第3期15卷 245-250页

作者：刘玉鑫龙桂鲁孙洪洲清华大学物理系北京100084

本文描述了质子-中子相互作用玻色子模型(IBM2)中原子核能谱的Stag-gering现象的改善方案,并利用这一方案对Ru和Pt同位素偶-偶核计算的结果,分析和讨论了原子核能谱的staggering现象与四极-四极相互作用的关系。

关键词：原子核能谱 staggering 相互作用

Evolution of intrinsic nuclear structure in medium mass even-even Xenon isotopes from a microscopic perspective

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Chinese Physics C 2020年第7期44卷 147-156页

作者： Surbhi Gupta Ridham Bakshi Suram Singh Arun Bharti G.H.Bhat J.A.Sheikh Department of Physics University of JammuJammu-180006India Department of Physics and Astronomical Sciences Central University of JammuSamba-181143India Department of Physics SP CollegeCluster University Srinagar-190001India Cluster University Srinagar-Jammu and Kashmir 190001 India

In this study,the multi-quasiparticle triaxial projected shell model(TPSM)is applied to investigateγ-vibrational bands in transitional nuclei of *** report that each triaxial intrinsic state has aγ-band built on *** TPSM approach is evaluated by the comparison of TPSM results with available experimental data,which shows a satisfactory *** energy ratios,B(E2)transition rates,and signature splitting of theγ-vibrational band are calculated.

关键词： triaxial projected shell model triaxiality yrast spectra band diagram back-bending staggering reduced transition probabilities

Study for the Energy Spectra of Even-Even Xe Isotopes

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Chinese journal of nuclear physics 1997年第4期19卷 239-243页

作者： Liu, Yingtai Liao, Jizhi Sichuan Univ Chengdu China

The approximate angular momentum projection of the deformed Hartree-Fock（PDHF）method is extended to lg2s3d shell and used to study 115Xe and 118Xe *** energy spectra are in good agreement with the experimental *** i... 详细信息

关键词： Deformed Hartree-Fock(HF)states γ-soft nucleus Energy staggering