Measurement of the cosmic ray hadron spectrum up to 30 TeV at mountain altitude: the primary proton spectrum

被引：32

作者：

Aglietta, M

Alessandro, B

Antonioli, P

Arneodo, F

Bergamasco, L

Bertaina, M

Castagnoli, C

Castellina, A

Chiavassa, A

Castagnoli, GC

Piazzoli, BD

Di Sciascio, G

Fulgione, W

Galeotti, P

Ghia, PL

Iacovacci, M

Mannocchi, G

Morello, C

Navarra, G

Riccati, L

Saavedra, O

Trinchero, GC

Valchierotti, S

Vallania, P

Vernetto, S

Vigorito, C

机构：

[1] CNR, Inst Fis Spazio Interplanetario, I-10133 Turin, Italy

[2] Ist Nazl Fis Nucl, I-10125 Turin, Italy

[3] Ist Nazl Fis Nucl, I-40127 Bologna, Italy

[4] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Assergi, AQ, Italy

[5] Univ Aquila, Dipartimento Fis, I-67100 Laquila, Italy

[6] Univ Turin, Dipartimento Fis Gen, I-10125 Turin, Italy

[7] Univ Naples, Dipartimento Sci Fis, I-80126 Naples, Italy

[8] Ist Nazl Fis Nucl, I-80126 Naples, Italy

来源：

ASTROPARTICLE PHYSICS | 2003年 / 19卷 / 03期

关键词：

cosmic rays; hadrons; primary protons; high energy calorimetry; HELIUM SPECTRA; FLUX; ATMOSPHERE; NUCLEI;

D O I：

10.1016/S0927-6505(03)00103-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The flux of cosmic ray hadrons at the atmospheric depth of 820 g cm(-2) has been measured by means of the EASTOP hadron calorimeter (Campo Imperatore, National Gran Sasso Laboratories, 2005 m a.s.l.). The hadron spectrum is well described by a single power law: S-h(E-h) = (2.25 +/- 0.21 +/- 0.34(sys)) x 10(-7) [GRAPHICS] m(-2)s(-1)sr(-1)GeV(-1) over the energy range 30 GeV-30 TeV. The procedure and the accuracy of the measurement are discussed. The primary proton spectrum is derived from the data by using the CORSIKA/QGSJET code to compute the local hadron flux as a function of the primary proton spectrum and to calculate and subtract the heavy nuclei contribution (basing on direct measurements). Over a wide energy range E-0 = 0.5-50 TeV its best fit is given by a single power law: S(E-0) = (9.81 +/- 1.1 +/- 1.6(sys)) x 10(-5) [GRAPHICS] m(-2)s(-1)sr(-1)GeV(-1).

引用

页码：329 / 338

页数：10

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