DETECTION OF A CHANGE OF SLOPE IN THE SPECTRUM OF HEAVY MASS COSMIC RAYS PRIMARIES BY THE KASCADE-GRANDE EXPERIMENT

被引：0

作者：

Chiavassa, A. ^{[1
]}

Apel, W. ^{[2
]}

Arteaga-Velazquez, J. ^{[3
]}

Bekk, K. ^{[2
]}

Bertaina, M. ^{[1
]}

Bluemer, J. ^{[2
,4
]}

Bozdog, H. ^{[2
]}

Brancus, I. ^{[5
]}

Cantoni, E. ^{[1
,6
]}

Cossavella, F. ^{[4
,12
]}

Daumiller, K. ^{[2
]}

de Souza, V. ^{[7
]}

Di Pierro, F. ^{[1
]}

Doll, P. ^{[2
]}

Engel, R. ^{[2
]}

Engler, J. ^{[2
]}

Finger, M. ^{[4
]}

Fuchs, B. ^{[4
]}

Fuhrmann, D. ^{[8
]}

Garino, F. ^{[4
]}

Gils, H. ^{[2
]}

Glasstetter, R. ^{[8
]}

Grupen, C. ^{[9
]}

Haungs, A. ^{[2
]}

Heck, D. ^{[2
]}

Hoerandel, J. ^{[10
]}

Huber, D. ^{[4
]}

Huege, T. ^{[2
]}

Kampert, K. ^{[8
]}

Kang, D. ^{[4
]}

Klages, H. ^{[2
]}

Link, K. ^{[4
]}

Luczak, P. ^{[11
]}

Ludwig, M. ^{[4
]}

Mathes, H. ^{[2
]}

Mayer, H. ^{[2
]}

Melissas, M.

Milke, J. ^{[2
]}

Mitrica, B. ^{[5
]}

Morello, C. ^{[6
]}

Oehlschlaeger, J. ^{[2
]}

Ostapchenko, S. ^{[1
,13
,14
]}

Palmieri, N. ^{[4
]}

Petcu, M. ^{[5
]}

Pierog, T. ^{[2
]}

Rebel, H. ^{[2
]}

Roth, M. ^{[2
]}

Schieler, H. ^{[2
]}

Schoo, S. ^{[4
]}

Schroeder, F. ^{[2
]}

机构：

[1] Univ Torino, Dipartimento Fis, Turin, Italy

[2] KIT, Inst Kernphys, Karlsruhe, Germany

[3] Univ Michoacana, Inst Fis & Matemat, Morelia, Michoacan, Mexico

[4] KIT, Inst Expt Kernphys, Karlsruhe, Germany

[5] Natl Inst Phys & Nucl Engn, Bucharest, Romania

[6] INAF Torino, Osservatorio Astrofis Torino, Turin, Italy

[7] Univ Sao Paulo, Inst Fis Sao Carlos, Sao Paulo, Brazil

[8] Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany

[9] Siegen Univ, Dept Phys, Siegen, Germany

[10] Radboud Univ Nijmegen, Dept Astrophys, Nijmegen, Netherlands

[11] Natl Ctr Nucl Res, Dept Cosm Ray Phys, Lodz, Poland

[12] Univ Bucharest, Dept Phys, Bucharest, Romania

[13] Max Planck Inst Phys & Astrophys, Munich, Germany

[14] Univ Trondheim, Trondheim, Norway

来源：

ACTA POLYTECHNICA | 2013年 / 53卷

关键词：

cosmic rays; energy spectrum; extensive air showers;

D O I：

10.14311/AP.2013.53.0728

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

KASCADE-Grande is an extensive air shower experiment devoted to the study of cosmic rays in the 10(16) divided by 10(18) eV energy range. The array comprises various detectors allowing independent measurements of the number of muons (N-mu) and charged particles (N-ch) of extensive air showers (EAS). These two observables are then used to study the primary energy spectrum, separating the events into two samples on the basis of the shower size ratio, corrected for attenuation in the atmosphere, ln N-mu/ln N-ch. The two samples represent the light and heavy mass groups of the primaries. In the studied energy range, only the spectrum of heavy primaries shows a significant change of slope. The energy (estimated using the QGSJET II hadronic interaction model) of this feature is in agreement with the expectations of a rigidity-dependent knee feature.

引用

页码：728 / 731

页数：4