Autoresonant Transition in the Presence of Noise and Self-Fields

Journal Article · Fri Oct 09 00:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.103.155001· OSTI ID:21370747

Barth, I; Friedland, L ^[1]; Sarid, E ^[2]; Shagalov, A G ^[3]

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1. Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904 (Israel)
2. Department of Physics, NRCN-Nuclear Research Center Negev, Beer Sheva, 84190 (Israel)
3. Institute of Metal Physics, Ekaterinburg 620219 (Russian Federation)

A sharp threshold for resonant capture of an ensemble of trapped particles driven by chirped frequency oscillations is analyzed. It is shown that at small temperatures T, the capture probability versus driving amplitude is a smoothed step function with the step location and width scaling as alpha{sup 3/4} (alpha being the chirp rate) and (alphaT){sup 1/2}, respectively. Strong repulsive self-fields reduce the width of the threshold considerably, as the ensemble forms a localized autoresonant macroparticle.

• OSTI ID: 21370747
• Journal Information: Physical Review Letters, Vol. 103, Issue 15; Other Information: DOI: 10.1103/PhysRevLett.103.155001; (c) 2009 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
CAPTURE
FUNCTIONS
NOISE
OSCILLATIONS
PROBABILITY