نتایج جستجو برای: radiation damping

تعداد نتایج: 259417  

2008
S. G. Rajeev

We solve exactly the classical non-relativistic Landau–Lifshitz equations of motion for a charged particle moving in a Coulomb potential, including radiation damping. The general solution involves the Painlevè transcendent of type II. It confirms our physical intuition that a negatively charged classical particle will spiral into the nucleus, supporting the validity of the Landau–Lifshitz equat...

2002
Yasufumi Kojima

The frequencies and damping times due to gravitational radiation are calculated for selfbound quark star models. The results are compared with those for neutron star models. They are markedly contrasted in less relativistic cases. The distinction derived here from a simple model of quark stars may be relevant to the future theoretical and observational studies, since the oscillation properties ...

2005
Edward W. Kolb A. Riotto

We investigate the possibility that the amplitude of scalar density perturbations may be damped after inflation. This would imply that CMB anisotropies do not uniquely fix the amplitude of the perturbations generated during inflation and that the present tensor-to-scalar ratio might be larger than produced in inflation, increasing the prospects of detection of primordial gravitational radiation...

Journal: :Physical review letters 2007
Thomas Corbitt Christopher Wipf Timothy Bodiya David Ottaway Daniel Sigg Nicolas Smith Stanley Whitcomb Nergis Mavalvala

We report on the use of a radiation pressure induced restoring force, the optical spring effect, to optically dilute the mechanical damping of a 1 g suspended mirror, which is then cooled by active feedback (cold damping). Optical dilution relaxes the limit on cooling imposed by mechanical losses, allowing the oscillator mode to reach a minimum temperature of 6.9 mK, a factor of approximately 4...

2008
PETRA

Within the next two years the 2.3 km long storage ring PETRA will be rebuild into one of the most brilliant x-ray sources worldwide (PETRA III). The large bending radius and the use of damping wigglers allow to achieve small beam emittances and extremely brilliant x-ray beams. In this paper we describe the design and the expected performance of the vacuum system for the storage ring. It consist...

Journal: :Physical review letters 2017
Carl Blair Slawek Gras Richard Abbott Stuart Aston Joseph Betzwieser David Blair Ryan DeRosa Matthew Evans Valera Frolov Peter Fritschel Hartmut Grote Terra Hardwick Jian Liu Marc Lormand John Miller Adam Mullavey Brian O'Reilly Chunnong Zhao B P Abbott T D Abbott C Adams R X Adhikari S B Anderson A Ananyeva S Appert K Arai S W Ballmer D Barker B Barr L Barsotti J Bartlett I Bartos J C Batch A S Bell G Billingsley J Birch S Biscans C Biwer R Bork A F Brooks G Ciani F Clara S T Countryman M J Cowart D C Coyne A Cumming L Cunningham K Danzmann C F Da Silva Costa E J Daw D DeBra R DeSalvo K L Dooley S Doravari J C Driggers S E Dwyer A Effler T Etzel T M Evans M Factourovich H Fair A Fernández Galiana R P Fisher P Fulda M Fyffe J A Giaime K D Giardina E Goetz R Goetz C Gray K E Gushwa E K Gustafson R Gustafson E D Hall G Hammond J Hanks J Hanson G M Harry M C Heintze A W Heptonstall J Hough K Izumi R Jones S Kandhasamy S Karki M Kasprzack S Kaufer K Kawabe N Kijbunchoo E J King P J King J S Kissel W Z Korth G Kuehn M Landry B Lantz N A Lockerbie A P Lundgren M MacInnis D M Macleod S Márka Z Márka A S Markosyan E Maros I W Martin D V Martynov K Mason T J Massinger F Matichard N Mavalvala R McCarthy D E McClelland S McCormick G McIntyre J McIver G Mendell E L Merilh P M Meyers R Mittleman G Moreno G Mueller J Munch L K Nuttall J Oberling P Oppermann Richard J Oram D J Ottaway H Overmier J R Palamos H R Paris W Parker A Pele S Penn M Phelps V Pierro I Pinto M Principe L G Prokhorov O Puncken V Quetschke E A Quintero F J Raab H Radkins P Raffai S Reid D H Reitze N A Robertson J G Rollins V J Roma J H Romie S Rowan K Ryan T Sadecki E J Sanchez V Sandberg R L Savage R M S Schofield D Sellers D A Shaddock T J Shaffer B Shapiro P Shawhan D H Shoemaker D Sigg B J J Slagmolen B Smith J R Smith B Sorazu A Staley K A Strain D B Tanner R Taylor M Thomas P Thomas K A Thorne E Thrane C I Torrie G Traylor G Vajente G Valdes A A van Veggel A Vecchio P J Veitch K Venkateswara T Vo C Vorvick M Walker R L Ward J Warner B Weaver R Weiss P Weßels B Willke C C Wipf J Worden G Wu H Yamamoto C C Yancey Hang Yu Haocun Yu L Zhang M E Zucker J Zweizig

Interferometric gravitational wave detectors operate with high optical power in their arms in order to achieve high shot-noise limited strain sensitivity. A significant limitation to increasing the optical power is the phenomenon of three-mode parametric instabilities, in which the laser field in the arm cavities is scattered into higher-order optical modes by acoustic modes of the cavity mirro...

1995
J. L. Zdunik

The role of direct URCA reactions in damping of the gravitational radiation driven instability is discussed. The temperature at which bulk viscosity suppresses completely this instability is calculated. The results are obtained analytically using recent calculations performed in the case of bulk viscosity due to the modified URCA processes (Lindblom 1995; Yoshida & Eriguchi 1995). The bulk visc...

2007
M. I. Shirokov V. A. Naumov

We study the neutrino oscillation problem in the framework of the wave packet formalism. The neutrino state is described by a packet located initially in a region S (source) and detected in another region D at a distance R from S. We examine how the oscillation probability as a function of variable R can be derived from he oscillation probability as a function of time t, the latter being found ...

2009
Tomohiro Matsuda

We consider the evolution of the flat direction when there is a significant dissipation of the kinetic energy. The field may obtain Hubble-scale mass, but a slow-roll is possible due to the damping caused by the dissipation. Besides the damping effect, radiation may be created continuously by the dissipation and may enhance the fluctuations of the field. These effects may alter the usual cosmol...

2002
Kirk T. McDonald Joseph Henry

Two capacitors of equal capacitance C are connected in parallel by wires of negligible resistance and a switch, as shown in the lefthand figure below. Initially the switch is open, one capacitor is charged to voltage V0, and charge Q0 = CV0, while the other is uncharged. At time t = 0 the switch is closed. If there were no damping (dissipative) mechanism, the circuit would then oscillate foreve...

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