2026-09-19T05:18:57Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/630092022-01-13T07:54:41Zcom_1721.1_7582com_1721.1_7581col_1721.1_131022
Ulrich J. Becker.
Zhou, Feng, Ph. D. Massachusetts Institute of Technology
Massachusetts Institute of Technology. Dept. of Physics.
Massachusetts Institute of Technology. Department of Physics
2011-05-23T18:01:25Z
2011-05-23T18:01:25Z
2009
2009
http://hdl.handle.net/1721.1/63009
720749138
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2009.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 105-112).
The AMS-01 detector measured charged cosmic rays during 10 days on the Space Shuttle Discovery in 1998 and collected 108 events. By identifying 8349 Lithium and 22709 Carbon nuclei from the raw data, this thesis presents the measurement of cosmic ray Lithium to Carbon ratio of presently highest statistics and momentum resolutions in the rigidity range of 2 GV to 100 GV. The 7Li to 6Li ratio is measured to be 1.07±0.16 in the rigidity region achieved from 2.5 GV to 6.3 GV. The experimental results are used to provide constraints on cosmic ray propagation models and address the "Lithium Problems".
by Feng Zhou.
Ph.D.
112 p.
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by
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http://dspace.mit.edu/handle/1721.1/7582
Physics.
Cosmic ray lithium isotope measurement with AMS-01
Thesis
application/pdf
Publication
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