Study of hadrons at the cores of extensive air showers and the elemental composition of cosmic rays at 1015 eV

H. T. Freudenreich, A. I. Mincer, D. Berley, J. A. Goodman, S. Tonwar, A. Wrotniak, G. B. Yodh, R. W. Ellsworth

    Research output: Contribution to journalArticle

    Abstract

    An experiment was done near sea level at College Park, Maryland, to study hadrons near the cores of air showers resulting from primary cosmic rays of 100-10000 TeV per nucleon. The parameters studied were (1) the rate of events which exceed a minimum shower density cut and specific hadronic calorimeter signal cuts and (2) the rate of events with hadrons delayed with respect to the shower front. Extensive computer simulations of the experiment were done using several particle-interaction and primary-composition models as well as details of the detector response. It is found that interaction models which include scaling or only modest scaling violation will fit the data only with primary spectra that are rich in heavy nuclei in the 100-10000-TeV total-energy range. A proton-dominated flux will fit the data only when an extreme scale-breaking model is used, in disagreement with extrapolations of accelerator data.

    Original languageEnglish (US)
    Pages (from-to)2732-2750
    Number of pages19
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume41
    Issue number9
    DOIs
    StatePublished - 1990

    Fingerprint

    cosmic ray showers
    hadrons
    cosmic rays
    showers
    scaling
    primary cosmic rays
    particle interactions
    heavy nuclei
    sea level
    calorimeters
    extrapolation
    accelerators
    computerized simulation
    protons
    detectors
    interactions
    energy

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Study of hadrons at the cores of extensive air showers and the elemental composition of cosmic rays at 1015 eV. / Freudenreich, H. T.; Mincer, A. I.; Berley, D.; Goodman, J. A.; Tonwar, S.; Wrotniak, A.; Yodh, G. B.; Ellsworth, R. W.

    In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 41, No. 9, 1990, p. 2732-2750.

    Research output: Contribution to journalArticle

    Freudenreich, HT, Mincer, AI, Berley, D, Goodman, JA, Tonwar, S, Wrotniak, A, Yodh, GB & Ellsworth, RW 1990, 'Study of hadrons at the cores of extensive air showers and the elemental composition of cosmic rays at 1015 eV', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 41, no. 9, pp. 2732-2750. https://doi.org/10.1103/PhysRevD.41.2732
    Freudenreich, H. T. ; Mincer, A. I. ; Berley, D. ; Goodman, J. A. ; Tonwar, S. ; Wrotniak, A. ; Yodh, G. B. ; Ellsworth, R. W. / Study of hadrons at the cores of extensive air showers and the elemental composition of cosmic rays at 1015 eV. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 1990 ; Vol. 41, No. 9. pp. 2732-2750.
    @article{ccf9d14d407041d5a96f82b89f78a508,
    title = "Study of hadrons at the cores of extensive air showers and the elemental composition of cosmic rays at 1015 eV",
    abstract = "An experiment was done near sea level at College Park, Maryland, to study hadrons near the cores of air showers resulting from primary cosmic rays of 100-10000 TeV per nucleon. The parameters studied were (1) the rate of events which exceed a minimum shower density cut and specific hadronic calorimeter signal cuts and (2) the rate of events with hadrons delayed with respect to the shower front. Extensive computer simulations of the experiment were done using several particle-interaction and primary-composition models as well as details of the detector response. It is found that interaction models which include scaling or only modest scaling violation will fit the data only with primary spectra that are rich in heavy nuclei in the 100-10000-TeV total-energy range. A proton-dominated flux will fit the data only when an extreme scale-breaking model is used, in disagreement with extrapolations of accelerator data.",
    author = "Freudenreich, {H. T.} and Mincer, {A. I.} and D. Berley and Goodman, {J. A.} and S. Tonwar and A. Wrotniak and Yodh, {G. B.} and Ellsworth, {R. W.}",
    year = "1990",
    doi = "10.1103/PhysRevD.41.2732",
    language = "English (US)",
    volume = "41",
    pages = "2732--2750",
    journal = "Physical review D: Particles and fields",
    issn = "1550-7998",
    publisher = "American Institute of Physics",
    number = "9",

    }

    TY - JOUR

    T1 - Study of hadrons at the cores of extensive air showers and the elemental composition of cosmic rays at 1015 eV

    AU - Freudenreich, H. T.

    AU - Mincer, A. I.

    AU - Berley, D.

    AU - Goodman, J. A.

    AU - Tonwar, S.

    AU - Wrotniak, A.

    AU - Yodh, G. B.

    AU - Ellsworth, R. W.

    PY - 1990

    Y1 - 1990

    N2 - An experiment was done near sea level at College Park, Maryland, to study hadrons near the cores of air showers resulting from primary cosmic rays of 100-10000 TeV per nucleon. The parameters studied were (1) the rate of events which exceed a minimum shower density cut and specific hadronic calorimeter signal cuts and (2) the rate of events with hadrons delayed with respect to the shower front. Extensive computer simulations of the experiment were done using several particle-interaction and primary-composition models as well as details of the detector response. It is found that interaction models which include scaling or only modest scaling violation will fit the data only with primary spectra that are rich in heavy nuclei in the 100-10000-TeV total-energy range. A proton-dominated flux will fit the data only when an extreme scale-breaking model is used, in disagreement with extrapolations of accelerator data.

    AB - An experiment was done near sea level at College Park, Maryland, to study hadrons near the cores of air showers resulting from primary cosmic rays of 100-10000 TeV per nucleon. The parameters studied were (1) the rate of events which exceed a minimum shower density cut and specific hadronic calorimeter signal cuts and (2) the rate of events with hadrons delayed with respect to the shower front. Extensive computer simulations of the experiment were done using several particle-interaction and primary-composition models as well as details of the detector response. It is found that interaction models which include scaling or only modest scaling violation will fit the data only with primary spectra that are rich in heavy nuclei in the 100-10000-TeV total-energy range. A proton-dominated flux will fit the data only when an extreme scale-breaking model is used, in disagreement with extrapolations of accelerator data.

    UR - http://www.scopus.com/inward/record.url?scp=0000254932&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0000254932&partnerID=8YFLogxK

    U2 - 10.1103/PhysRevD.41.2732

    DO - 10.1103/PhysRevD.41.2732

    M3 - Article

    VL - 41

    SP - 2732

    EP - 2750

    JO - Physical review D: Particles and fields

    JF - Physical review D: Particles and fields

    SN - 1550-7998

    IS - 9

    ER -