Composition and Energy Spectra of Heavy Nuclei with 0.5 < E < 40 MeV Per Nucleon in the 1971 January 24 and September 1 Solar Flares

1972 ◽  
Vol 175 ◽  
pp. L149 ◽  
Author(s):  
H. J. Crawford ◽  
P. B. Price ◽  
James D. Sullivan
Keyword(s):  
Solar Flares ◽  
Energy Spectra ◽  
Heavy Nuclei

scholarly journals Measurement by FIB on the ISS: Two Emissions of Solar Neutrons Detected?

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
Y. Muraki ◽  
K. Koga ◽  
T. Goka ◽  
H. Matsumoto ◽  
T. Obara ◽  
...  
Keyword(s):  
Solar Flares ◽  
Neutron Detector ◽  
Space Shuttle ◽  
Space Station ◽  
Energy Spectra ◽  
Arrival Direction ◽  
Directional Information ◽  
Solar Neutron ◽  
New Type ◽  
First Time

A new type of solar neutron detector (FIB) was launched on board the Space Shuttle Endeavour on July 16, 2009, and began collecting data at the International Space Station (ISS) on August 25, 2009. This paper summarizes the three years of observations obtained by the solar neutron detector FIB until the end of July 2012. The solar neutron detector FIB can determine both the energy and arrival direction of neutrons. We measured the energy spectra of background neutrons over the South Atlantic Anomaly (SAA) region and elsewhere and found the typical trigger rates to be 20 and 0.22 counts/sec, respectively. It is possible to identify solar neutrons to within a level of 0.028 counts/sec, provided that directional information is applied. Solar neutrons were possibly observed in association with the M-class solar flares that occurred on March 7 (M3.7) and June 7 (M2.5) of 2011. This marked the first time that neutrons had been observed in M-class solar flares. A possible interpretation of the production process is provided.

The Preferential Acceleration of Heavy Nuclei in Solar Flares

1972 ◽  
Vol 177 ◽  
pp. L43 ◽  
Author(s):  
Brian G. Cartwright ◽  
Antonio Mogro-Campero
Keyword(s):  
Solar Flares ◽  
Heavy Nuclei

Low-energy cosmic-ray heavy nuclei during the time of solar minimum

1968 ◽  
Vol 46 (10) ◽  
pp. S598-S600
Author(s):  
E. Tamai ◽  
M. Tsubomatsu ◽  
K. Ogura
Keyword(s):  
Energy Range ◽  
Solar Minimum ◽  
Cosmic Ray ◽  
Low Energy ◽  
Energy Spectra ◽  
Solar Modulation ◽  
Atmospheric Depth ◽  
Heavy Nuclei ◽  
Multiply Charged ◽  
Α Particles

Nuclear emulsions were exposed at 2.3 g cm−2 atmospheric depth over Fort Churchill in 1965. These emulsions have been examined for the tracks of multiply-charged [Formula: see text] nuclei, with emphasis being paid particularly to those particles that stopped in the emulsions. Differential energy spectra of α particles and [Formula: see text], [Formula: see text]and [Formula: see text] nuclei were obtained in the energy interval 60–550 MeV/nucleon. They represent experimental results during the period when solar modulation effects were at a minimum. The fluxes of α particles and L, M, and H nuclei for energy intervals of 60–170, 100–400, 100–525, and 140–550 MeV/nucleon were found to be 20.9 ± 1.2, 2.4 ± 0.4, 4.8 ± 0.6, and 2.5 ± 0.4 particles m−2 sr−1 s−1, respectively. The results also show that the L/M and H/M ratios at the top of the atmosphere were 0.56 ± 0.16 and 0.34 ± 0.13 respectively, in the energy range from 140 to 350 MeV/nucleon. These values are appreciably greater than those observed at higher energies.

Spectrometer IRIS: Investigation of the Time Structure and Energy Spectra of X-Ray Emission from Solar Flares

2013 ◽  
pp. 359-391
Author(s):  
G. A. Matveev ◽  
P. B. Dmitriev ◽  
I. V. Kudryavtsev ◽  
V. P. Lazutkov ◽  
M. I. Savchenko ◽  
...  
Keyword(s):  
Solar Flares ◽  
Time Structure ◽  
Energy Spectra ◽  
X Ray

The energy spectra of heavy nuclei measured by the ATIC experiment

2006 ◽  
Vol 37 (10) ◽  
pp. 1944-1949 ◽  
Author(s):  
A.D. Panov ◽  
J.H. Adams ◽  
H.S. Ahn ◽  
G.L. Bashindzhagyan ◽  
K.E. Batkov ◽  
...  
Keyword(s):  
Energy Spectra ◽  
Heavy Nuclei

Energy Spectra and Time Delays of Hard X-Rays of Solar Flares in Konus-Wind and RHESSI Experiments

2018 ◽  
Vol 58 (8) ◽  
pp. 1050-1056 ◽  
Author(s):  
Yu. E. Charikov ◽  
A. N. Shabalin ◽  
E. P. Ovchinnikova ◽  
A. L. Lysenko ◽  
S. A. Kuznetsov
Keyword(s):  
Solar Flares ◽  
Time Delays ◽  
Energy Spectra ◽  
X Rays

scholarly journals The acceleration of heavy nuclei in solar flares

1975 ◽  
Vol 23 (6) ◽  
pp. 955-959 ◽  
Author(s):  
Kunitomo Sakurai
Keyword(s):  
Solar Flares ◽  
Heavy Nuclei

Energy spectra of ions from impulsive solar flares

1992 ◽  
Vol 387 ◽  
pp. 715 ◽  
Author(s):  
D. V. Reames ◽  
I. G. Richardson ◽  
K.-P. Wenzel
Keyword(s):  
Solar Flares ◽  
Energy Spectra
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