Scattering of linearly polarized microwave radiation from a dielectric helix.

PAPER pubmed Applied optics 1987 Engineering / measurement Effect: unclear Evidence: Insufficient

Read original paper → DOI: 10.1364/ao.26.004632 PMID: 20523417 Evidence Lab

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.

AI evidence extraction

At a glance

Study type

Engineering / measurement

Effect direction

unclear

Population

—

Sample size

—

Exposure

microwave other

Evidence strength

Insufficient

Confidence: 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": 0.7399999999999999911182158029987476766109466552734375,
    "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/metadata and may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.

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