scholarly journals Cosmic-Ray Proton and Helium Spectra above 50 GeV

1972 ◽  
Vol 28 (15) ◽  
pp. 985-988 ◽  
Author(s):  
M. J. Ryan ◽  
J. F. Ormes ◽  
V. K. Balasubrahmanyan
Keyword(s):  
Cosmic Ray ◽  
Helium Spectra

scholarly journals The Cosmic‐Ray Proton and Helium Spectra between 0.4 and 200 GV

1999 ◽  
Vol 518 (1) ◽  
pp. 457-472 ◽  
Author(s):  
M. Boezio ◽  
P. Carlson ◽  
T. Francke ◽  
N. Weber ◽  
M. Suffert ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Helium Spectra

Cosmic-ray proton and helium spectra and solar modulation effects in the new solar cycle measured with a four-element counter telescope

1968 ◽  
Vol 46 (10) ◽  
pp. S883-S886 ◽  
Author(s):  
J. F. Ormes ◽  
W. R. Webber
Keyword(s):  
Scintillation Counter ◽  
Pulse Height ◽  
Cosmic Ray ◽  
Geometrical Factor ◽  
Solar Modulation ◽  
Primary Proton ◽  
Before And After ◽  
Order Of Magnitude ◽  
Helium Spectra ◽  
Counter Telescope

In the summers of 1965 and 1966 we have continued our studies begun in 1963 on the primary proton and helium spectra and the effects of solar modulation. Data are available from four additional balloon flights at Fort Churchill using the earlier version of the Cerenkov-scintillation counter telescope (Ormes and Webber 1966), and a new four-element double-scintillation (dE/dx), Cerenkov-scintillation + range telescope. This latest telescope employs pulse-height analysis on both dE/dx counters and the Cerenkov-scintillation counter. Various consistency requirements may be set between pulse heights. These serve to reduce background effects by an order of magnitude over the previous system. The geometrical factor of the telescope is 55.4 sr cm2. The results reported here will cover the proton and helium spectra from 100 MeV/nucleon to 2 BeV/nucleon and their time variation. They will show that the fractional changes in the differential proton spectra can be represented by (rigidity)−1 both before and after the sunspot minimum and that there is no evidence for any hysteresis effects between protons of 100 MeV to 2 BeV and energies to which neutron monitors respond.

scholarly journals COSMIC-RAY PROTON AND HELIUM SPECTRA FROM THE FIRST CREAM FLIGHT

2011 ◽  
Vol 728 (2) ◽  
pp. 122 ◽  
Author(s):  
Y. S. Yoon ◽  
H. S. Ahn ◽  
P. S. Allison ◽  
M. G. Bagliesi ◽  
J. J. Beatty ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Helium Spectra

Precise Measurement of Cosmic‐Ray Proton and Helium Spectra with the BESS Spectrometer

2000 ◽  
Vol 545 (2) ◽  
pp. 1135-1142 ◽  
Author(s):  
T. Sanuki ◽  
M. Motoki ◽  
H. Matsumoto ◽  
E. S. Seo ◽  
J. Z. Wang ◽  
...  
Keyword(s):  
Precise Measurement ◽  
Cosmic Ray ◽  
Helium Spectra

scholarly journals TeV cosmic-ray proton and helium spectra in the myriad model

2013 ◽  
Vol 555 ◽  
pp. A48 ◽  
Author(s):  
G. Bernard ◽  
T. Delahaye ◽  
Y.-Y. Keum ◽  
W. Liu ◽  
P. Salati ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Helium Spectra

scholarly journals Measurements of 0.2–20GeV/n cosmic-ray proton and helium spectra from 1997 through 2002 with the BESS spectrometer

2007 ◽  
Vol 28 (1) ◽  
pp. 154-167 ◽  
Author(s):  
Y. Shikaze ◽  
S. Haino ◽  
K. Abe ◽  
H. Fuke ◽  
T. Hams ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Helium Spectra

scholarly journals Precision Measurement of the monthly cosmic Ray fluxes e−, e+, p, He) with the Alpha Magnetic Spectrometer on the ISS

2019 ◽  
Vol 209 ◽  
pp. 01052
Author(s):  
Maura Graziani
Keyword(s):  
Magnetic Field ◽  
Space Station ◽  
Rotation Period ◽  
Cosmic Ray ◽  
Magnetic Spectrometer ◽  
Time Range ◽  
Field Polarity ◽  
Helium Spectra ◽  
Cycle 24 ◽  
Alpha Magnetic Spectrometer

The precision measurements of the monthly cosmic ray fluxes with Alpha Magnetic Spectrometer on the International Space Station are presented. Individual electron, positron, proton and helium spectra have been measured for each Bartel’s rotation period (27 days) in the time range from May 2011 to May 2017. This period covers the ascending phase of solar cycle #24 together with the reversal of the Sun’s magnetic field polarity through the minimum. The fluxes reveal a characteristic time dependence below 20 GeV. The data show a strong charge-sign dependent effects corresponding to the the polarity reversal of the solar magnetic field.

Precise measurements of cosmic-ray hydrogen and helium spectra with BESS

2001 ◽  
Vol 27 (4) ◽  
pp. 761-766 ◽  
Author(s):  
T. Sanuki ◽  
H. Matsumoto ◽  
M. Nozaki ◽  
K. Abe ◽  
K. Anraku ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Helium Spectra
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