Value chain · CLM-0133
In plain terms
A 2013 review paper says calculations suggest a stronger microwave beam than the usual safety limit would still be fine at a higher frequency, but the paper itself says these predictions still need to be fully checked in space experiments.
The claim as recorded
Sasaki, Tanaka and Maki (2013) state that recent theoretical and numerical work (their refs [22]-[24], including Perkins and Goldman 1981) shows ionospheric interaction effects "are not critical" for a power density of around 1 kW/m2 at 5.8 GHz, but explicitly flag that "these predictions need to be fully verified in the early phase of space experiments."
Scope and limits
This is an ASSERTED design-literature claim citing MODELLED sources, not a measured result; the paper's own hedge ("need to be fully verified") must not be dropped. Does not establish that 1 kW/m2 is safe, only that theoretical work of the day suggested it might be.
What it assumes
Refs [22]-[24] are correctly summarised by Sasaki et al.; refs [22] and [23] could not be obtained directly (closed access, no open-access copy found).
Where it comes from
Sasaki, Tanaka and Maki (2013), p.1442 (PDF p.5 of 10), Section II.E: "The recent theoretical works and numerical simulations have shown that the effects are not critical for a power density of around 1 kW/m2 at 5.8 GHz [22]-[24], but these predictions need to be fully verified in the early phase of space experiments."
Basis: power density, W/m2, at 5.8 GHz
Related records
- Answers question
- QST-001 not published in this release
Cite this
energyaperture.com/c/clm-0133
CLM-0133, Energy Aperture, as of 2013.
Connected records
Other published records linked to this one. A list, not a judgement.
- Also from SRC-127
- CLM-0111An authoritative 2013 review says the 230 watt per square metre figure was chosen early in the design as a cautious maximum. It does not...CLM-0112The same review says modern work finds about 1 kilowatt per square metre acceptable at 5.8 gigahertz, more than four times the older...CLM-0113As of 2013 the experiment needed to check these predictions had still not been done.CLM-0128A 2013 review gives three references for the 1 kilowatt per square metre figure: two Japanese papers from 1995 and 1996, and a 1981 paper...CLM-1467 (low confidence)Keeping people out of the area where the beam is strong is a plausible way for a strong beam to meet the 2020 international limit for...