Normalized electron production rate profiles as a result of penetration of high-energy solar particles into the lower ionosphere

1985 ◽  
Vol 5 (10) ◽  
pp. 111-114 ◽  
Author(s):  
P.I. Velinov ◽  
M. Gerdjikova
Keyword(s):  
Production Rate ◽  
Lower Ionosphere ◽  
High Energy ◽  
Electron Production ◽  
Solar Particles

scholarly journals Common overabundance of $\mathsf{^3}$He in high-energy solar particles

2003 ◽  
Vol 408 (1) ◽  
pp. L1-L4 ◽  
Author(s):  
J. Torsti ◽  
J. Laivola ◽  
L. Kocharov
Keyword(s):  
High Energy ◽  
Solar Particles

High-Energy Electron Production by the Raman and2ωpeInstabilities in a 1.064-μm-Laser-Produced Underdense Plasma

1982 ◽  
Vol 49 (19) ◽  
pp. 1405-1408 ◽  
Author(s):  
D. W. Phillion ◽  
E. M. Campbell ◽  
K. G. Estabrook ◽  
G. E. Phillips ◽  
F. Ze
Keyword(s):  
High Energy ◽  
Energy Electron ◽  
High Energy Electron ◽  
Electron Production ◽  
Underdense Plasma

Neutron monitor observations of high-energy solar particles during the new cycle

Solar Physics ◽  
1967 ◽  
Vol 2 (4) ◽  
Author(s):  
G.A. Baird ◽  
G.G. Bell ◽  
S.P. Duggal ◽  
M.A. Pomerantz
Keyword(s):  
Neutron Monitor ◽  
High Energy ◽  
Solar Particles

Cosmic Ray Positron Production by Gamma Ray Interactions on Starlight

1991 ◽  
Vol 9 (1) ◽  
pp. 115-117 ◽  
Author(s):  
A. Mastichiadis ◽  
R. J. Protheroe ◽  
S. A. Stephens
Keyword(s):  
Production Rate ◽  
Unit Volume ◽  
Gamma Ray ◽  
Cosmic Ray ◽  
High Energy ◽  
Local Region ◽  
Positron Energy ◽  
Average Production ◽  
The Galaxy ◽  
Positron Production

AbstractWe examine the production of cosmic ray positrons by photon-photon pair production of high-energy γ-rays on starlight photons. We start by calculating the production rate as a function of positron energy and distance from the Sun resulting from interactions with sunlight. The results are generalized to production on other types of star. We calculate the average production rate per unit volume averaged over the local region of the galaxy, and we estimate the contribution to the observed intensity from this process.

High-energy solar particles and human exploration

Space Weather ◽  
2005 ◽  
Vol 3 (5) ◽  
pp. n/a-n/a ◽  
Author(s):  
Louis J. Lanzerotti
Keyword(s):  
High Energy ◽  
Solar Particles ◽  
Human Exploration

Using the effective recombination coefficient to constrain the positive ion composition in Saturn's ionosphere

2020 ◽  
Author(s):  
Joshua Dreyer ◽  
Erik Vigren ◽  
Michiko Morooka ◽  
Jan-Erik Wahlund ◽  
Stephan Buchert ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Recombination Rate ◽  
Lower Ionosphere ◽  
Negative Ions ◽  
Rate Coefficients ◽  
Recombination Coefficient ◽  
Positive Ions ◽  
Electron Production ◽  
Upper Limits ◽  
Positive Ion

<p>We combine RPWS/LP and INMS data from Cassini's Grand Finale orbits into Saturn's lower ionosphere to calculate the effective recombination coefficient α<sub>300</sub> at a reference electron temperature of 300 K. Assuming photochemical equilibrium at altitudes below 2500 km and using an established method to determine the electron production rate, we derive upper limits for α<sub>300</sub> of ∼ 2.5∗10<sup>-7</sup> cm<sup>3 </sup>s<sup>-1</sup>, which suggest that Saturn's ionospheric positive ions are dominated by species with low recombination rate coefficients.<br />An ionosphere dominated by water group ions or complex hydrocarbons, as previously suggested, is incompatible with this result, as these species have recombination rate coefficients > 5∗10<sup>-7</sup> cm<sup>3 </sup>s<sup>-1</sup> at an electron temperature of 300 K. The results do not give constraints on the nature of the negative ions.</p>

scholarly journals PAMELA’S MEASUREMENTS OF MAGNETOSPHERIC EFFECTS ON HIGH-ENERGY SOLAR PARTICLES

2015 ◽  
Vol 801 (1) ◽  
pp. L3 ◽  
Author(s):  
O. Adriani ◽  
G. C. Barbarino ◽  
G. A. Bazilevskaya ◽  
R. Bellotti ◽  
M. Boezio ◽  
...  
Keyword(s):  
High Energy ◽  
Solar Particles
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