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The fragmentation of 670A MeV neon-20 as a function of depth in water. I. ExperimentWe present the final analysis of an experiment to study the interaction of a beam of 670A MeV neon ions incident on a water column set to different thicknesses. The atomic number Z (and, in some cases, the isotopic mass A) of primary beam particles and of the products of nuclear interactions emerging from the water column close to the central axis of the beam was obtained for nuclei between Be (Z = 4) and Ne (Z = 10) using a time-of-flight telescope to measure the velocity and a set of silicon detectors to measure the energy loss of each particle. The fluence of particles of a given charge was obtained and normalized to the incident beam intensity. Corrections were made for accidental coincidences between multiple particles triggering the TOF telescope and for interactions in the detector. The background due to beam particles interacting in beam line elements upstream of the detector was calculated. Sources of experimental artifacts and background in particle identification experiments designed to characterize heavy ion beams for radiobiological research are summarized, and some of the difficulties inherent in this work are discussed. Complete tables of absolutely normalized fluence spectra as a function of LET are included for reference purposes.
Document ID
20050000901
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Schimmerling, W.
(University of California Berkeley 94720)
Miller, J.
Wong, M.
Rapkin, M.
Howard, J.
Spieler, H. G.
Jarret, B. V.
Date Acquired
August 22, 2013
Publication Date
October 1, 1989
Publication Information
Publication: Radiation research
Volume: 120
Issue: 1
ISSN: 0033-7587
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: CA23247
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Radiation Health
Non-NASA Center

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