Physics Department Seminar | University of Alaska Fairbanks |
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J O U R N A L C L U B |
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Measurement of the
Average Lifetime of a Muon and Exploration into the Effects of
Cosmic Rays on Life in the Space Environment |
by |
Vivian Palmer |
University of Alaska Fairbanks |
ABSTRACT Cosmic
rays are high energy particles from across the universe
that sometimes collide with our atmosphere, leading to many
complex interactions, which can be explained using the Standard
Model of Particle Physics. Muons are subatomic particles that
decay as they travel through the Earth’s atmosphere into smaller
particles. Using a polystyrene scintillator that collected roughly
3,000 individual muon decay times, we calculated a mean muon decay
time of 2.19 ± .09 microseconds. In this paper, we also explore
cosmic rays and their effect on life in the space environment.
First, we explore the relationship between cosmic rays and Earth’s
environment. We cover two processes through which galactic cosmic
rays may impact cloud formation, which are ion-aerosol clear air
mechanism and ion-aerosol near cloud mechanism. Then, we
investigate the health implications of galactic cosmic rays, which
must be considered prior to space travel, and we consider several
experimental methods to mitigate exposure to these particles
outside of Earth’s atmosphere. Lastly, we establish cosmic rays in
the solar system and beyond and propose potential shielding
solutions. The solutions we explore are tracing spacecraft
trajectories through the magnetospheres of other planets, hydrogen
shielding, and other general practices to limit the time in space
exposed to radiation |
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Friday, 7 October 2022 |
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Globe Room, Elvey Building and on Zoom : https://zoom.us/j/796501820?pwd=R2xEcXNwZGVRbG0va29iN2REU241UT09 | |||
3:45PM |