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Register a new userAttenuation of Zero Sound in Quantum Liquid (Fermi Liquid) depending on Landau Parameters of Order( ℓ = 0 ; 1)
دراسة تخامد الصوت الصفري في السوائل الكوانتية (سائل فيرمي ) بتابعية بارامترات لانداو من المرتبة ( ℓ = 0 ; 1)
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Added by
Tishreen University ورقة بحثية
Publication date
2016
fields
Physics
and research's language is
العربية
Created by
Shamra Editor
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تم في هذا البحث دراسة موجة الكثافة لسائل فيرمي بالاعتماد على فرضيات لانداو، كما تم حل المعادلة الحركية بتقريب زمن الاسترخاء عند تحقق الشرط اللاتصادمي ، و ذلك بنشر تابع الكثافة الجسيمية من المرتبة ، إضافة لذلك حسبت أنماط الصوت الصفري و معدل التخامد عند درجات الحرارة المنخفضة . نوقشت النتائج التي تم التوصل إليها و قورنت مع النتائج التجريبية و النظرية المتوفرة في هذا المجال.
In this research, it has been studied the Fermi-Liquid density wave depending on Landau theory. The kinetic equation has been solved using relaxation time approximation at collision less condition. This is by expanding particle density function of order Plus, Zero sound modes have been calculated and attenuation rate at low temperatures.The results have been discussed and compared to the set ones and the offered theory in this domain.
References used
(PethickC.J.,Attenuation of zero sound in a normal Fermi – Liquid, Phys. Rev.V185N3 P384(1969
(GoykhmanMikhail,Strings,Fluctuation in finit density holographic quantum liquids, ADS/CFT at finite density,University Leiden http//hdl.net chapter2(2014
(Gabriel F. Gulioni and Giovanni Vignal,Quantum Theory of The Electron Liqud,www.Cambridg.org/97805chapter8(2012
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The theory of quantum liquids (quantum liquid theory) in the last few Years largely
developed because of the brood spectrum of natural phenomenon relating to the limitation
of parameters of the this (the parameters of the Landau Fermi liquid theory
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quantum liquids by calculation(wave modes) at zeros complex function of magnetic
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order as the de-Broglie thermal wavelength. An interaction function between quasi
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Landau’s spread coefficients for ℓ = 0 , 1 , 2 . Using such representation led to obtaining
the dispersion relation of the structural waves and its energy Spectrum in balanced local
condition. The use of Landau parameters in this study isconsidered new comparing to other
studies in this field. It allows us to get more generic and more precise dispersion relations
with new previously unknown spectrum energy in Quantum Fermi Plasmas.
In This Scientific Paper it had been studied the Effect of Ponderomotive Force on
Landau damping of electron Wave in dense quantum Plasmas, by Using quasi quantum
kinetic Equation, Using the Corrections due to both of quantum effects and Ponderomot
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in this Field.
In the present study, a number of nozzles have
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flow through it. The flow was measured at different nozzles for variable
water heights in the tank, the flow lines were marked in d
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modification was made to the geometric shape of the nozzles, the
measurement and drawing of the different flow curves were carried out.
In liquid filling systems using a cylinder with a reciprocating piston driven by
pneumatic cylinder,
In the filling stroke there are a lot of parameters affecting these systems and their
performances ,one of these parameters is a piston stroke len
gth.
In this paper the influences of a piston stroke length and their parameters on the
velocity of the piston has been studied in order to reach the optimum piston stroke length.
First the mathematical module of velocity of the piston and the length of the stroke
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All reading data are converted into graphs.
The results show that In liquid filling systems there is an ideal value range for the
piston stroke length.
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