宇宙線観測アプリ[宙豆]そらまめ

Comparing Cosmic Ray Observations on Airplane and Ground - iPad Air (3rd Generation)

Data measurements were compared between ground and inside an airplane.

Device: iPad Air (3rd Generation)
Measurement Duration: 3 hours 47 minutes
Threshold: 70

At an altitude of approximately 10,000 meters, both primary cosmic rays before generating air showers and secondary cosmic rays generated by the interaction of primary cosmic rays with air to form air showers exist. On the other hand, on the ground, both environmental radiation and secondary cosmic rays exist. In this measurement, more event candidates were detected in the air. The device used, iPad Air (3rd Generation), is among the models with the highest noise level among the devices we use for testing, and the measurement threshold is automatically set to the maximum of 70. This means that levels of brightness from 0 to 70 out of 0 to 255 cannot be measured due to noise. Even with such a noisy device, approximately 2.75 times more data could be measured.
The flux of cosmic rays is said to be about 100 times higher at 10,000 meters compared to the ground, but focusing only on muons, which Soramame can measure inside the airplane cabin, it is estimated to be about 5 times higher. Further detailed analysis and discussion will continue regarding the results of this measurement.

Flight

2024 Feb 28 13:56 - 17:43

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Taking data with soramame in fligjt

Ground

2024 Jan 17 22:01 - Jan 28 1:28

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