# Shapes of 20Ne de-excitation line in solar flare

Shapes of 20Ne de-excitation line in solar flare Since almost all de-excitation lines from nuclear states excited by flare-accelerated protons and α $\alpha$ -particles are emitted promptly after nuclear collisions, the emission photon’s energy depends on the velocity of the recoiling nucleus. The energies and widths of γ $\gamma$ -ray lines provide a wealth of information on the directionality and spectra of ions in solar flares. In this paper, we use TALYS code to improve the cross sections of γ $\gamma$ -ray lines production, and calculate the shapes of the 1.634 MeV line from de-excitation of 20Ne as a function of ion’s energy spectra and the heliocentric angle. Taking this line shape as an example, we try to develop a new method of line shape analysis to study the properties of accelerated ions in solar flares. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Astrophysics and Space Science Springer Journals

# Shapes of 20Ne de-excitation line in solar flare

, Volume 362 (9) – Aug 2, 2017
6 pages

/lp/springer_journal/shapes-of-20ne-de-excitation-line-in-solar-flare-bqbiRf7KLK
Publisher
Springer Netherlands
Subject
Physics; Astrophysics and Astroparticles; Astronomy, Observations and Techniques; Cosmology; Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) ; Astrobiology
ISSN
0004-640X
eISSN
1572-946X
D.O.I.
10.1007/s10509-017-3126-8
Publisher site
See Article on Publisher Site

### Abstract

Since almost all de-excitation lines from nuclear states excited by flare-accelerated protons and α $\alpha$ -particles are emitted promptly after nuclear collisions, the emission photon’s energy depends on the velocity of the recoiling nucleus. The energies and widths of γ $\gamma$ -ray lines provide a wealth of information on the directionality and spectra of ions in solar flares. In this paper, we use TALYS code to improve the cross sections of γ $\gamma$ -ray lines production, and calculate the shapes of the 1.634 MeV line from de-excitation of 20Ne as a function of ion’s energy spectra and the heliocentric angle. Taking this line shape as an example, we try to develop a new method of line shape analysis to study the properties of accelerated ions in solar flares.

### Journal

Astrophysics and Space ScienceSpringer Journals

Published: Aug 2, 2017

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