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Scattering of linearly polarized microwave radiation from a dielectric helix.

Applied optics · 1987 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 6221

A calculation method for the electric field scattered from a helical dielectric target was compared with an equivalent experiment at a 3.18 cm incident wavelength, and experimental intensities were compared to first-order theory.

Study snapshot

PublicationApplied optics · 1987
Study typeengineering
Reported directionUnclear
Evidence ratingInsufficient

Abstract

A method for calculating the electric field scattered from a helical dielectric target is compared to an equivalent experiment. The wavelength of the incident light is 3.18 cm, and the right-handed helix has a radius of 1.83 cm and wire radius of 0.24 cm, a pitch of 0.553 cm, and seven turns. The index of refraction of, the target is 1.626-i 0.012. A brief description of the Shifrin theory generalized to this application is given along with a discussion of the experiment, and the experimental intensities are compared to the first-order theory.

Machine Enhanced Logic

AI evidence extraction

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
Exposuremicrowave
Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

A calculation method for the electric field scattered from a helical dielectric target was compared with an equivalent experiment at a 3.18 cm incident wavelength, and experimental intensities were compared to first-order theory.

Outcomes measured

  • scattered electric field
  • experimental scattering intensities vs first-order theory

Limitations

  • No biological/health outcomes reported (engineering/optics scattering study).
  • Frequency not explicitly stated (only wavelength provided).
  • No quantitative agreement metrics between theory and experiment stated in the abstract.
View raw extracted JSON
{
  "study_type": "engineering",
  "exposure": {
    "band": "microwave",
    "source": "other",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "scattered electric field",
    "experimental scattering intensities vs first-order theory"
  ],
  "main_findings": "A calculation method for the electric field scattered from a helical dielectric target was compared with an equivalent experiment at a 3.18 cm incident wavelength, and experimental intensities were compared to first-order theory.",
  "effect_direction": "unclear",
  "limitations": [
    "No biological/health outcomes reported (engineering/optics scattering study).",
    "Frequency not explicitly stated (only wavelength provided).",
    "No quantitative agreement metrics between theory and experiment stated in the abstract."
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave radiation",
    "scattering",
    "dielectric helix",
    "linearly polarized",
    "Shifrin theory",
    "experimental validation"
  ],
  "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: 10.1364/ao.26.004632
PubMed: 20523417

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