NDLI: Determining the solar-flare photospheric scale height from smm gamma-ray measurements

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Determining the solar-flare photospheric scale height from smm gamma-ray measurements

Content Provider	NASA Technical Reports Server (NTRS)
Author	Lingenfelter, Richard E.
Copyright Year	1991
Description	A connected series of Monte Carlo programs was developed to make systematic calculations of the energy, temporal and angular dependences of the gamma-ray line and neutron emission resulting from such accelerated ion interactions. Comparing the results of these calculations with the Solar Maximum Mission/Gamma Ray Spectrometer (SMM/GRS) measurements of gamma-ray line and neutron fluxes, the total number and energy spectrum of the flare-accelerated ions trapped on magnetic loops at the Sun were determined and the angular distribution, pitch angle scattering, and mirroring of the ions on loop fields were constrained. Comparing the calculations with measurements of the time dependence of the neutron capture line emission, a determination of the He-3/H ratio in the photosphere was also made. The diagnostic capabilities of the SMM/GRS measurements were extended by developing a new technique to directly determine the effective photospheric scale height in solar flares from the neutron capture gamma-ray line measurements, and critically test current atmospheric models in the flare region.
File Size	142003
Page Count	2
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19940009198
Archival Resource Key	ark:/13960/t45q9tv7m
Language	English
Publisher Date	1991-02-28
Access Restriction	Open
Subject Keyword	Solar Physics Gamma Ray Spectra Gamma Ray Spectrometers Solar Flares Energy Spectra Solar Activity Effects Neutron Emission Solar Maximum Mission Monte Carlo Method Solar Magnetic Field Scale Height Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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