A Supersonic Crowdion in Mica

Archilla, Juan F. R.; Kosevich, Yuriy A.; Jiménez, Noé; Sánchez‐Morcillo, Víctor J.; Garcı́a-Raffi, L. M.

doi:10.1007/978-3-319-21045-2_3

Cited by 20 publications

(28 citation statements)

References 30 publications

(58 reference statements)

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“…Recently, a detailed analysis of the decay modes of potassium was performed [9] , giving an excess unit of positive charge. It was noticed that the extent of decoration of the quodon tracks closely matched that of slowly moving positrons [10].…”

Section: Figmentioning

confidence: 99%

“…The details of the decay modes and their outcome are presented in Table 1 (data from Refs. [9,11,12]). In this table the term neutrino is used generically although for β − emission is actually an electron anti-neutrino.…”

Section: Outcomes Of 40 K Decaymentioning

confidence: 99%

“…They are given in Table 2 (data from Refs. [9,13]. As mica muscovite is neutral and K is ionized, the lattice has provided the energy for ionization 4.34 eV and a monovalent ion K + at rest is considered the ground state.…”

Section: Outcomes Of 40 K Decaymentioning

confidence: 99%

“…Supersonic lattice kinks have only a discrete set of velocities and energies for which they do not radiate energy. Only one such value has been found in a 1D model for mica muscovite with realistic parameters with 26 eV [9,16].…”

Section: A Lattice Kink or Crowdionmentioning

confidence: 99%

“…As this energy is not available in any decay, this process is not possible, therefore allowing for more recoil energy than proposed in Refs. [9,16].…”

Section: Inelastic Collisionsmentioning

confidence: 99%

See 4 more Smart Citations

On the charge of quodons

Archilla¹,

Russell²

2016

LoM

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Muscovite mica is a mineral in which the tracks of charged swift particles, from radioactivity or cosmic rays, can be recorded and made visible by decoration with the mineral magnetite. Also, the tracks of quasi-one-dimensional lattice excitations, called quodons, moving along close-packed directions can be recorded. Most quodon tracks evolve from nuclear recoils following decay of the radioactive isotope . We analyze the possible results taking into account charge, energy and momentum conservation and considering the possible ionization states of the K atoms, which can be intrinsic localized modes, solitons, kinks or crowdions, travelling charge states and combinations of them.

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Section: Figmentioning

confidence: 99%

Section: Outcomes Of 40 K Decaymentioning

confidence: 99%

Section: Outcomes Of 40 K Decaymentioning

confidence: 99%

Section: A Lattice Kink or Crowdionmentioning

confidence: 99%

“…As this energy is not available in any decay, this process is not possible, therefore allowing for more recoil energy than proposed in Refs. [9,16].…”

Section: Inelastic Collisionsmentioning

confidence: 99%

See 3 more Smart Citations

On the charge of quodons

Archilla¹,

Russell²

2016

LoM

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Ballistic Charge Transport by Mobile Nonlinear Excitations

Russell

Archilla

2021

Physica Rapid Research Ltrs

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The developments in hyperconductivity, the loss‐free transmission of electric charge at room temperature and above, due to the ballistic transport of electric charge in crystals with quasi‐layered structure, are reported. The electric charge is carried by quodons, a type of mobile nonlinear intrinsic localized mode of lattice excitation observed as fossil tracks in layered silicates and recently by laboratory experiments. Here, ballistic means moving with minimal scattering or interaction with phonons. A test for hyperconductivity in solid materials is developed. It is based on the unique effect of short‐term continuation of transport of charge, by total internal reflection, after creation of quodons has ceased. This effect is called the slow‐quodon‐decay effect or SQD effect. So far, only layered silicates have been shown to exhibit hyperconductivity. New evidence is presented for hyperconductivity in chrysotile, a nonlayered silicate material with new results. Being a fibrous material, it is more flexible than the sheet mica phyllosilicates. It is found that quodons can also be created and carry charge in very different materials, such as polymers, but without showing hyperconductivity, because of the very short range and lifetime of quodons in those materials.

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Quodon Current in Tungsten and Consequences for Tokamak Fusion Reactors

Russell,

Archilla,

Mas

2023

Physica Rapid Research Ltrs

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Tokamak fusion reactors produce energetic He ions that penetrate surfaces less than 20 μm and neutrons that spread throughout the reactor. Experiments with similar swift He ions in heavy metals show that the vibronic coupling of nonlinear lattice excitations creates mobile lattice excitations, called quodons. These are decoupled from phonons, move ballistically at near sonic speed, and propagate easily in metals and insulators. They can couple to and transport electric charge, which allows their observation in experiments. They rapidly disperse heat throughout a fusion reactor and carry charge through electrical insulators. In this article, an experimental design is presented that separates quodon current and conduction current and therefore makes it possible to measure the former. Also, the time‐of‐flight experiments are presented that lead to an estimation of quodon speed which is of the order of the sound velocity and therefore much faster than the drift of electrons or holes in conduction currents. Herein, results are presented on quodon current in tungsten, a material widely used in nuclear fusion technology, showing that many quodons are produced in fusion reactors. It is predicted that at high output powers, quodons created by He ions and neutrons may adversely impact on cryogenic systems.

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A Supersonic Crowdion in Mica

Cited by 20 publications

References 30 publications

On the charge of quodons

On the charge of quodons

Ballistic Charge Transport by Mobile Nonlinear Excitations

Quodon Current in Tungsten and Consequences for Tokamak Fusion Reactors

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