Changement de la section d'absorption Mössbauer des noyaux de 57Fe au voisinage du point de Curie dans le nickel

Babikova, U.F; Gruzin, P. L.; Spirin, N. А.; Uspensky, M. N.

doi:10.1016/0038-1098(79)90119-4

Cited by 4 publications

(3 citation statements)

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“…Then the retardation effects can be described in the Born approximation. Under condition (22), from equations (15) it follows…”

Section: Equations In Pseudospin Representationmentioning

confidence: 99%

“…The separation of scales is based on the existence of small parameters. Thus, the influence of the external field is small according to equation (22). The attenuations are also assumed to be small, so that…”

Section: Scale Separation Approachmentioning

confidence: 99%

“…The possible influence of a constant external field on the coherent radiation intensity has been discussed [7,8,20,21] with reference to the so-called Mössbauer magnetic anomaly. The latter is the increase of the spectrum area, when the paramagnetic state changes to the ferromagnetic state [17,22]. In some papers, such an increase was associated with the influence of the external field on the phonon characteristics of the material.…”

Section: Influence Of External Fieldsmentioning

confidence: 99%

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Coherent dynamics of radiating atomic systems in pseudospin representation

Yukalov¹

2014

Laser Phys.

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The aim of this review is twofold. First, a general approach is presented allowing for a unified description of dynamics in radiating systems of different nature. Both atomic systems as well as spin assemblies can be treated in the frame of the same mathematical method based on pseudospin (or spin) representation of evolution equations. The approach is applicable to all stages of radiation dynamics, including the most difficult initial quantum stage, where coherence is not yet developed. This makes it possible to study the process of coherent self-organization from the chaotic quantum stage. Second, the approach is illustrated by applying it for the description of several coherent phenomena. Different types of superradiance are characterized: pure superradiance, triggered superradiance, pulsing and punctuated superradiance. The theory is presented of such interesting effects as triggering dipolar waves, turbulent photon filamentation, collective liberation of light, pseudospin atomic squeezing, and operator entanglement production.

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“…Then the retardation effects can be described in the Born approximation. Under condition (22), from equations (15) it follows…”

Section: Equations In Pseudospin Representationmentioning

confidence: 99%

Section: Scale Separation Approachmentioning

confidence: 99%