Evaporative Cooling of Flare Plasma.

Abstract

We investigate a one-dimensional loop model for the evaporative cooling of the coronal flare plasma. The important assumptions are that conductive losses dominate radiative cooling and that the evaporative velocities are small compared to the sound speed. We calculate the profile and evolution of the temperature and verify that our assumptions are accurate for plasma parameters typical of flare regions. The model is in agreement with soft x-ray observations on the evolution of flare temperatures and emission measures. The effect of evaporation is to greatly reduce the conductive heat flux into the chromosphere and to enhance the EUV emission from the coronal flare plasma. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1976
Accession Number
ADA034032

Entities

People

  • Peter A. Sturrock
  • S. K. Antiochos

Organizations

  • Stanford University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Agreements
  • California
  • Differential Equations
  • Energy
  • Equations
  • Heat Energy
  • Heat Flux
  • Heat Transfer
  • Low Temperature
  • Mach Number
  • Magnetic Fields
  • Radiation
  • Soft X Rays
  • Solar Activity
  • Solar Flares
  • Universities
  • X Rays

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Solar Physics
  • Thermal Physics or Thermal Science.