Evidence for Changing of Cosmic Ray Composition between 1017 and 1018 eV from Multicomponent Measurements

T. Abu-Zayyad; K. Belov; D. J. Bird; J. Boyer; Z. Cao; M. Catanese; G. F. Chen; R. W. Clay; C. E. Covault; J. W. Cronin; H. Y. Dai; B. R. Dawson; J. W. Elbert; B. E. Fick; L. F. Fortson; J. W. Fowler; K. G. Gibbs; M. A.K. Glasmacher; K. D. Green; Y. Ho; A. Haung; C. C. Jui; M. J. Kidd; D. B. Kieda; B. C. Knapp; S. Ko; C. G. Larsen; W. Lee; E. C. Loh; E. J. Mannel; J. Matthews; J. N. Matthews; B. J. Newport; D. F. Nitz; R. A. Ong; K. M. Simpson; J. D. Smith; D. Sinclair; P. Sokolsky; P. Sommers; C. Song; J. K.K. Tang; S. B. Thomas; J. C. Van der Velde; L. R. Wiencke; C. R. Wilkinson; S. Yoshida; X. Z. Zhang

doi:10.1103/PhysRevLett.84.4276

Evidence for Changing of Cosmic Ray Composition between 10¹⁷ and 10¹⁸ eV from Multicomponent Measurements

T. Abu-Zayyad
, K. Belov
, D. J. Bird
, J. Boyer
, Z. Cao
, M. Catanese
, G. F. Chen
, R. W. Clay
, C. E. Covault
, J. W. Cronin
, H. Y. Dai
, B. R. Dawson
, J. W. Elbert
, B. E. Fick
, L. F. Fortson
, J. W. Fowler
, K. G. Gibbs
, M. A.K. Glasmacher
, K. D. Green
, Y. Ho

A. Haung, C. C. Jui, M. J. Kidd, D. B. Kieda, B. C. Knapp, S. Ko, C. G. Larsen, W. Lee, E. C. Loh, E. J. Mannel, J. Matthews, J. N. Matthews, B. J. Newport, D. F. Nitz, R. A. Ong, K. M. Simpson, J. D. Smith, D. Sinclair, P. Sokolsky, P. Sommers, C. Song, J. K.K. Tang, S. B. Thomas, J. C. Van der Velde, L. R. Wiencke, C. R. Wilkinson, S. Yoshida, X. Z. Zhang

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

202 Scopus citations

Abstract

The average mass composition of cosmic rays with primary energies between 10¹⁷ and 10¹⁸eV has been studied using a hybrid detector consisting of the High Resolution Fly's Eye (HiRes) prototype and the MIA muon array. Measurements have been made of the change in the depth of shower maximum and the muon density as a function of energy. The results show that the composition is changing from a heavy to lighter mix as the energy increases.

Original language	English (US)
Pages (from-to)	4276-4279
Number of pages	4
Journal	Physical review letters
Volume	84
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.84.4276
State	Published - 2000

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10.1103/PhysRevLett.84.4276

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Abu-Zayyad, T., Belov, K., Bird, D. J., Boyer, J., Cao, Z., Catanese, M., Chen, G. F., Clay, R. W., Covault, C. E., Cronin, J. W., Dai, H. Y., Dawson, B. R., Elbert, J. W., Fick, B. E., Fortson, L. F., Fowler, J. W., Gibbs, K. G., Glasmacher, M. A. K., Green, K. D., ... Zhang, X. Z. (2000). Evidence for Changing of Cosmic Ray Composition between 10¹⁷ and 10¹⁸ eV from Multicomponent Measurements. Physical review letters, 84(19), 4276-4279. https://doi.org/10.1103/PhysRevLett.84.4276

Abu-Zayyad, T, Belov, K, Bird, DJ, Boyer, J, Cao, Z, Catanese, M, Chen, GF, Clay, RW, Covault, CE, Cronin, JW, Dai, HY, Dawson, BR, Elbert, JW, Fick, BE, Fortson, LF, Fowler, JW, Gibbs, KG, Glasmacher, MAK, Green, KD, Ho, Y, Haung, A, Jui, CC, Kidd, MJ, Kieda, DB, Knapp, BC, Ko, S, Larsen, CG, Lee, W, Loh, EC, Mannel, EJ, Matthews, J, Matthews, JN, Newport, BJ, Nitz, DF, Ong, RA, Simpson, KM, Smith, JD, Sinclair, D, Sokolsky, P, Sommers, P, Song, C, Tang, JKK, Thomas, SB, Van der Velde, JC, Wiencke, LR, Wilkinson, CR, Yoshida, S & Zhang, XZ 2000, 'Evidence for Changing of Cosmic Ray Composition between 10¹⁷ and 10¹⁸ eV from Multicomponent Measurements', Physical review letters, vol. 84, no. 19, pp. 4276-4279. https://doi.org/10.1103/PhysRevLett.84.4276

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title = "Evidence for Changing of Cosmic Ray Composition between 1017 and 1018 eV from Multicomponent Measurements",

abstract = "The average mass composition of cosmic rays with primary energies between 1017 and 1018eV has been studied using a hybrid detector consisting of the High Resolution Fly's Eye (HiRes) prototype and the MIA muon array. Measurements have been made of the change in the depth of shower maximum and the muon density as a function of energy. The results show that the composition is changing from a heavy to lighter mix as the energy increases.",

author = "T. Abu-Zayyad and K. Belov and Bird, \{D. J.\} and J. Boyer and Z. Cao and M. Catanese and Chen, \{G. F.\} and Clay, \{R. W.\} and Covault, \{C. E.\} and Cronin, \{J. W.\} and Dai, \{H. Y.\} and Dawson, \{B. R.\} and Elbert, \{J. W.\} and Fick, \{B. E.\} and Fortson, \{L. F.\} and Fowler, \{J. W.\} and Gibbs, \{K. G.\} and Glasmacher, \{M. A.K.\} and Green, \{K. D.\} and Y. Ho and A. Haung and Jui, \{C. C.\} and Kidd, \{M. J.\} and Kieda, \{D. B.\} and Knapp, \{B. C.\} and S. Ko and Larsen, \{C. G.\} and W. Lee and Loh, \{E. C.\} and Mannel, \{E. J.\} and J. Matthews and Matthews, \{J. N.\} and Newport, \{B. J.\} and Nitz, \{D. F.\} and Ong, \{R. A.\} and Simpson, \{K. M.\} and Smith, \{J. D.\} and D. Sinclair and P. Sokolsky and P. Sommers and C. Song and Tang, \{J. K.K.\} and Thomas, \{S. B.\} and \{Van der Velde\}, \{J. C.\} and Wiencke, \{L. R.\} and Wilkinson, \{C. R.\} and S. Yoshida and Zhang, \{X. Z.\}",

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AU - Abu-Zayyad, T.

AU - Belov, K.

AU - Bird, D. J.

AU - Boyer, J.

AU - Cao, Z.

AU - Catanese, M.

AU - Chen, G. F.

AU - Clay, R. W.

AU - Covault, C. E.

AU - Cronin, J. W.

AU - Dai, H. Y.

AU - Dawson, B. R.

AU - Elbert, J. W.

AU - Fick, B. E.

AU - Fortson, L. F.

AU - Fowler, J. W.

AU - Gibbs, K. G.

AU - Glasmacher, M. A.K.

AU - Green, K. D.

AU - Ho, Y.

AU - Haung, A.

AU - Jui, C. C.

AU - Kidd, M. J.

AU - Kieda, D. B.

AU - Knapp, B. C.

AU - Ko, S.

AU - Larsen, C. G.

AU - Lee, W.

AU - Loh, E. C.

AU - Mannel, E. J.

AU - Matthews, J.

AU - Matthews, J. N.

AU - Newport, B. J.

AU - Nitz, D. F.

AU - Ong, R. A.

AU - Simpson, K. M.

AU - Smith, J. D.

AU - Sinclair, D.

AU - Sokolsky, P.

AU - Sommers, P.

AU - Song, C.

AU - Tang, J. K.K.

AU - Thomas, S. B.

AU - Van der Velde, J. C.

AU - Wiencke, L. R.

AU - Wilkinson, C. R.

AU - Yoshida, S.

AU - Zhang, X. Z.

PY - 2000

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AB - The average mass composition of cosmic rays with primary energies between 1017 and 1018eV has been studied using a hybrid detector consisting of the High Resolution Fly's Eye (HiRes) prototype and the MIA muon array. Measurements have been made of the change in the depth of shower maximum and the muon density as a function of energy. The results show that the composition is changing from a heavy to lighter mix as the energy increases.

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JO - Physical review letters

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Evidence for Changing of Cosmic Ray Composition between 10¹⁷ and 10¹⁸ eV from Multicomponent Measurements

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