Real-space formulation of the quantum-mechanical electronic scattering under static n-fold axially symmetric electric and magnetic fields in a projection microscope.

Ultramicroscopy · 2001 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 3882

Study snapshot

PublicationUltramicroscopy · 2001

Study typeengineering

Reported directionUnclear

Evidence ratingInsufficient

Abstract

A numerical technique is developed to compute electronic propagation in three-dimensional potential-energy and vector-potential distributions, as required for the quantum-mechanical modelization of scattering in static electric and magnetic fields in a projection microscope. The technique is implemented in a transfer-matrix and Green's functions general procedure to simulate field-emission and electronic projection microscopy. In particular, simulated observations of a transverse magnetic field confirms the occurrence of diffraction fringes that are oriented in the direction of the field. These diffraction fringes are mainly associated with the detection of a magnetic flux and tend to be more pronounced as this quantity increases. In the conditions of this paper, the smallest magnetic flux that was detected could be associated with a phase shift of around 2pi/8 rad.

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Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeengineering

Effect directionunclear

PopulationNot supplied

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

A numerical technique (transfer-matrix and Green's functions) was developed to simulate electron propagation/scattering in 3D static electric and magnetic field distributions for field-emission and electronic projection microscopy. Simulations of a transverse magnetic field showed diffraction fringes oriented along the field direction, mainly associated with detection of magnetic flux, becoming more pronounced with increasing flux; the smallest detected flux corresponded to an estimated phase shift of about 2π/8 rad.

Outcomes measured

electron propagation/scattering simulation in static electric and magnetic fields
diffraction fringes in transverse magnetic field
magnetic flux detection sensitivity (phase shift)

Limitations

No biological/health outcomes assessed; this is a computational/engineering simulation study.
Exposure metrics relevant to EMF health research (e.g., frequency, SAR, field strength) are not reported in the abstract.

View raw extracted JSON

{
  "study_type": "engineering",
  "exposure": {
    "band": null,
    "source": "projection microscope (static electric and magnetic fields)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "electron propagation/scattering simulation in static electric and magnetic fields",
    "diffraction fringes in transverse magnetic field",
    "magnetic flux detection sensitivity (phase shift)"
  ],
  "main_findings": "A numerical technique (transfer-matrix and Green's functions) was developed to simulate electron propagation/scattering in 3D static electric and magnetic field distributions for field-emission and electronic projection microscopy. Simulations of a transverse magnetic field showed diffraction fringes oriented along the field direction, mainly associated with detection of magnetic flux, becoming more pronounced with increasing flux; the smallest detected flux corresponded to an estimated phase shift of about 2π/8 rad.",
  "effect_direction": "unclear",
  "limitations": [
    "No biological/health outcomes assessed; this is a computational/engineering simulation study.",
    "Exposure metrics relevant to EMF health research (e.g., frequency, SAR, field strength) are not reported in the abstract."
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "static electric field",
    "static magnetic field",
    "electron scattering",
    "projection microscopy",
    "field-emission microscopy",
    "transfer-matrix",
    "Green's functions",
    "diffraction fringes",
    "magnetic flux",
    "phase shift"
  ],
  "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1016/s0304-3991(01)00138-3
PubMed: 11942632

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