Feshbach resonance


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Feshbach resonance

[′fesh‚bäk ‚rez·ən·əns]
(quantum mechanics)
A sharp resonance or peak which is seen when the cross section of an atomic or nuclear scattering process is plotted as a function of energy. It is associated with an energy threshold above which the scattering process can lead to a new result (such as excitation or ionization of one of the colliding objects), and it lies at an energy slightly below this threshold.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In the current paper we consider [bar.K]N (Channel 1) and [([SIGMA] [pi]).sup.0] (Channel 2), since the [[LAMBDA].sup.*] of our interest is an I = 0 quasi-bound state in Channel 1 which appears as a Feshbach resonance (15,16) in Channel 2.
They then essentially glued the atoms together to form ultracold molecules, applying a magnetic field to prompt the atoms to bond -- a mechanism known as a "Feshbach resonance," named after the late MIT physicist Herman Feshbach.
For example, nonlinearity management arises in atomic physics for the Feshbach resonance [4, 8] of the scattering length of interatomic interactions in BECs, where the interaction strength can be characterized by a single parameter, the s-wave scattering length [a.sub.s].
Other subjects include dynamics of semirigid rod polymers, the design of soft polymeric composites for electro-mechanical applications, elasticities of lipid membranes versus cell membranes, the dynamics of polymers in solutions with hydrodynamic memory, and formation of molecules and entangled atomic pairs from atomic BEC due to Feshbach resonance. Most of the chapters are translations, and a few of the translations contain minor yet frequent grammatical errors.