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Inelastic-interaction mean free path of negative pions in tungstenThe inelastic-interaction mean free paths (lambda) of 5-, 10-, and 15-GeV/c pions have been measured by determining the distribution of first-interaction locations in a modular tungsten-scintillator ionization spectrometer. In addition to commonly used interaction signatures of a few (2-5) particles in two or three consecutive modules, a chi-squared distribution is employed to calculate the probability that the first interaction occurred at a specific depth in the spectrometer. This latter technique seems to be more reliable than use of the simpler criteria. No significant dependence of lambda on energy has been observed. In tungsten, lambda for pions is 206 (plus or minus 6) g/sq cm.
Document ID
19760034681
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Cheshire, D. L.
(Arizona Univ. Tucson, AZ, United States)
Huggett, R. W.
(Arizona Univ. Tucson, AZ, United States)
Jones, W. V.
(Arizona Univ. Tucson, AZ, United States)
Rountree, S. P.
(Louisiana State University Baton Rouge, La., United States)
Schmidt, W. K. H.
(Max-Planck-Institut fuer extraterrestrische Physik Garching, Germany)
Kurz, R. J.
(TRW Systems Redondo Beach, Calif., United States)
Bowen, T.
(Arizona Univ. Tucson, AZ, United States)
Delise, D. A.
(Arizona Univ. Tucson, AZ, United States)
Krider, E. P.
(Arizona, University Tucson, Ariz., United States)
Orth, C. D.
(California, University Berkeley, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
November 1, 1975
Publication Information
Publication: Physical Review D - Particles and Fields
Subject Category
Nuclear And High-Energy Physics
Accession Number
76A17647
Funding Number(s)
CONTRACT_GRANT: NAS5-11425
CONTRACT_GRANT: NAS8-27408
CONTRACT_GRANT: NGR-19-001-012
CONTRACT_GRANT: BMFT-WRK-244
CONTRACT_GRANT: NAS5-11426
CONTRACT_GRANT: NAS9-11884
CONTRACT_GRANT: NAS9-10986
Distribution Limits
Public
Copyright
Other

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