2024-03-29T10:25:44Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00030885
2023-01-16T05:14:23Z
320:2524:2544:2587
Determination of fundamental mode decay constant out of a decay curve with higher mode contamination
Tamagawa, Hajime
Nishina, Kojiro
open access
A practical new method is presented for the determination of a fundamental mode decay constant out of a decay curve with higher mode contamination. Suppose one attempts to determine the decay constant of a certain physical quantity whose fundamental component decreases exponentially with time. If higher modes are included in the measured values the logarithmic curve of the quantity deviates from a straight line but approaches asymptotically to the latter, which represents the decay of the fundamental mode. The authors introduced an appropriate function which approximated the deviation, and devised a practical method to get the fundamental decay constant. The new method was applied successfully to the neutron population decay experiments, which was carried out with a neutron generator with pulsing function and a graphite stack. The calculatiorial method may apply to any decaying phenomena.
Faculty of Engineering, Nagoya University
1981-03-31
eng
departmental bulletin paper
VoR
https://doi.org/10.18999/memfenu.32.2.299
http://hdl.handle.net/2237/00033070
https://nagoya.repo.nii.ac.jp/records/30885
10.18999/memfenu.32.2.299
0027-7657
Memoirs of the Faculty of Engineering, Nagoya University
32
2
299
309
https://nagoya.repo.nii.ac.jp/record/30885/files/32-2-05.pdf
application/pdf
828.0 kB
2020-11-24